./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/IntPath_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/IntPath_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d204ea6638a616c846b000f1a4abc2d6ee737a0e ................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 11:48:52,262 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:48:52,262 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:48:52,270 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:48:52,270 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:48:52,270 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:48:52,271 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:48:52,272 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:48:52,273 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:48:52,274 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:48:52,274 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:48:52,275 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:48:52,275 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:48:52,276 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:48:52,276 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:48:52,277 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:48:52,278 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:48:52,279 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:48:52,280 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:48:52,281 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:48:52,282 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:48:52,283 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:48:52,284 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:48:52,285 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:48:52,285 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:48:52,285 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:48:52,286 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:48:52,287 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:48:52,287 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:48:52,288 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:48:52,288 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:48:52,289 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:48:52,289 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:48:52,289 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:48:52,289 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:48:52,290 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:48:52,290 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 11:48:52,301 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:48:52,301 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:48:52,302 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 11:48:52,302 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 11:48:52,302 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 11:48:52,302 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 11:48:52,303 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 11:48:52,303 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 11:48:52,303 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 11:48:52,303 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 11:48:52,303 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 11:48:52,303 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:48:52,303 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 11:48:52,304 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 11:48:52,304 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:48:52,304 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 11:48:52,304 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 11:48:52,304 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 11:48:52,304 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:48:52,304 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 11:48:52,304 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:48:52,304 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 11:48:52,305 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:48:52,305 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:48:52,305 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 11:48:52,305 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:48:52,305 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 11:48:52,305 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 11:48:52,306 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 11:48:52,306 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d204ea6638a616c846b000f1a4abc2d6ee737a0e [2018-11-23 11:48:52,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:48:52,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:48:52,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:48:52,339 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:48:52,340 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:48:52,340 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/IntPath_true-termination_true-no-overflow.c [2018-11-23 11:48:52,377 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/data/6d4444892/779eb80de6744ec89456be88b58f913c/FLAG80867d0b8 [2018-11-23 11:48:52,776 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:48:52,777 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/sv-benchmarks/c/termination-restricted-15/IntPath_true-termination_true-no-overflow.c [2018-11-23 11:48:52,780 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/data/6d4444892/779eb80de6744ec89456be88b58f913c/FLAG80867d0b8 [2018-11-23 11:48:52,791 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/data/6d4444892/779eb80de6744ec89456be88b58f913c [2018-11-23 11:48:52,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:48:52,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:48:52,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:48:52,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:48:52,797 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:48:52,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337624aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52, skipping insertion in model container [2018-11-23 11:48:52,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:48:52,815 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:48:52,923 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:48:52,926 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:48:52,935 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:48:52,943 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:48:52,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52 WrapperNode [2018-11-23 11:48:52,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:48:52,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:48:52,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:48:52,945 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:48:52,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:48:52,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:48:52,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:48:52,963 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:48:52,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... [2018-11-23 11:48:52,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:48:52,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:48:52,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:48:52,974 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:48:52,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3f4452b8-e8ac-46f6-8656-844270181f39/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:48:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:48:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:48:53,121 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:48:53,122 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-23 11:48:53,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:53 BoogieIcfgContainer [2018-11-23 11:48:53,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:48:53,123 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 11:48:53,123 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 11:48:53,126 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 11:48:53,127 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 11:48:53,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 11:48:52" (1/3) ... [2018-11-23 11:48:53,128 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33dee5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 11:48:53, skipping insertion in model container [2018-11-23 11:48:53,128 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 11:48:53,128 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:52" (2/3) ... [2018-11-23 11:48:53,128 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33dee5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 11:48:53, skipping insertion in model container [2018-11-23 11:48:53,128 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 11:48:53,128 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:53" (3/3) ... [2018-11-23 11:48:53,130 INFO L375 chiAutomizerObserver]: Analyzing ICFG IntPath_true-termination_true-no-overflow.c [2018-11-23 11:48:53,176 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 11:48:53,177 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 11:48:53,177 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 11:48:53,177 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 11:48:53,177 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:48:53,177 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:48:53,177 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 11:48:53,177 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:48:53,177 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 11:48:53,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-23 11:48:53,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 11:48:53,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 11:48:53,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 11:48:53,202 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 11:48:53,202 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 11:48:53,202 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 11:48:53,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-23 11:48:53,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 11:48:53,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 11:48:53,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 11:48:53,203 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 11:48:53,203 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 11:48:53,208 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~x~0, main_~y~0;havoc main_~i~0;havoc main_~x~0;havoc main_~y~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := 0;main_~y~0 := 0; 7#L13true assume !(main_~i~0 > 10);main_~y~0 := 1; 5#L18-1true [2018-11-23 11:48:53,208 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-1true assume !!(main_~x~0 == main_~y~0); 5#L18-1true [2018-11-23 11:48:53,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:53,212 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2018-11-23 11:48:53,213 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:48:53,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:48:53,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:53,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:48:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:48:53,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:53,278 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2018-11-23 11:48:53,279 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:48:53,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:48:53,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:53,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:48:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:48:53,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:53,284 INFO L82 PathProgramCache]: Analyzing trace with hash 30953, now seen corresponding path program 1 times [2018-11-23 11:48:53,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:48:53,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:48:53,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:53,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:53,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:48:53,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 11:48:53,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 11:48:53,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 11:48:53,368 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2018-11-23 11:48:53,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:53,395 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-11-23 11:48:53,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 11:48:53,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 12 transitions. [2018-11-23 11:48:53,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 11:48:53,399 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 3 states and 3 transitions. [2018-11-23 11:48:53,400 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 11:48:53,400 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-23 11:48:53,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2018-11-23 11:48:53,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 11:48:53,401 INFO L705 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2018-11-23 11:48:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2018-11-23 11:48:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2018-11-23 11:48:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 11:48:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2018-11-23 11:48:53,421 INFO L728 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2018-11-23 11:48:53,421 INFO L608 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2018-11-23 11:48:53,422 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 11:48:53,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2018-11-23 11:48:53,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 11:48:53,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 11:48:53,422 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 11:48:53,422 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 11:48:53,422 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 11:48:53,423 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~x~0, main_~y~0;havoc main_~i~0;havoc main_~x~0;havoc main_~y~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := 0;main_~y~0 := 0; 34#L13 assume main_~i~0 > 10;main_~x~0 := 1; 35#L18-1 [2018-11-23 11:48:53,423 INFO L796 eck$LassoCheckResult]: Loop: 35#L18-1 assume !!(main_~x~0 == main_~y~0); 35#L18-1 [2018-11-23 11:48:53,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:53,423 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-23 11:48:53,423 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:48:53,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:48:53,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:53,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:48:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:48:53,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:53,430 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2018-11-23 11:48:53,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:48:53,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:48:53,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:53,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:48:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:48:53,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:53,434 INFO L82 PathProgramCache]: Analyzing trace with hash 30891, now seen corresponding path program 1 times [2018-11-23 11:48:53,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:48:53,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:48:53,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 11:48:53,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:53,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:48:53,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 11:48:53,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 11:48:53,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 11:48:53,469 INFO L87 Difference]: Start difference. First operand 3 states and 3 transitions. cyclomatic complexity: 1 Second operand 4 states. [2018-11-23 11:48:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:53,476 INFO L93 Difference]: Finished difference Result 3 states and 2 transitions. [2018-11-23 11:48:53,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 11:48:53,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3 states and 2 transitions. [2018-11-23 11:48:53,477 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 11:48:53,477 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3 states to 0 states and 0 transitions. [2018-11-23 11:48:53,477 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 11:48:53,477 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 11:48:53,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 11:48:53,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 11:48:53,478 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:48:53,478 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:48:53,478 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:48:53,478 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 11:48:53,478 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 11:48:53,478 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 11:48:53,478 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 11:48:53,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 11:48:53 BoogieIcfgContainer [2018-11-23 11:48:53,482 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 11:48:53,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 11:48:53,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 11:48:53,482 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 11:48:53,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:53" (3/4) ... [2018-11-23 11:48:53,485 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 11:48:53,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 11:48:53,485 INFO L168 Benchmark]: Toolchain (without parser) took 691.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -125.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:53,486 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:48:53,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.92 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:53,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.04 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:53,488 INFO L168 Benchmark]: Boogie Preprocessor took 10.68 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:48:53,488 INFO L168 Benchmark]: RCFGBuilder took 148.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:53,489 INFO L168 Benchmark]: BuchiAutomizer took 359.43 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: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:53,489 INFO L168 Benchmark]: Witness Printer took 2.53 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. [2018-11-23 11:48:53,491 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.92 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 18.04 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.68 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 148.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 359.43 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: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.53 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic). 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. 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 3 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 13 SDtfs, 10 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...