./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/product-lines/minepump_spec2_product62_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0ed9222f Calling Ultimate with: 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 /storage/repos/svcomp/c/product-lines/minepump_spec2_product62_true-unreach-call_false-termination.cil.c -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 23f993c1cfae7b9f66cc8c2fd252077854486eec ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-0ed9222-m [2019-01-14 04:21:05,413 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 04:21:05,416 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 04:21:05,433 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 04:21:05,434 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 04:21:05,435 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 04:21:05,437 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 04:21:05,439 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 04:21:05,441 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 04:21:05,442 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 04:21:05,443 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 04:21:05,443 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 04:21:05,445 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 04:21:05,446 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 04:21:05,449 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 04:21:05,450 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 04:21:05,451 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 04:21:05,453 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 04:21:05,455 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 04:21:05,456 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 04:21:05,457 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 04:21:05,459 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 04:21:05,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 04:21:05,461 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 04:21:05,462 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 04:21:05,463 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 04:21:05,464 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 04:21:05,465 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 04:21:05,465 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 04:21:05,467 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 04:21:05,467 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 04:21:05,468 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 04:21:05,468 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 04:21:05,468 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 04:21:05,469 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 04:21:05,470 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 04:21:05,470 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-01-14 04:21:05,487 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 04:21:05,487 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 04:21:05,488 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 04:21:05,488 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 04:21:05,489 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 04:21:05,489 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-14 04:21:05,489 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-14 04:21:05,489 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-14 04:21:05,489 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-14 04:21:05,490 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-14 04:21:05,490 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-14 04:21:05,490 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 04:21:05,490 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 04:21:05,490 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 04:21:05,490 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 04:21:05,491 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 04:21:05,491 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 04:21:05,491 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-14 04:21:05,491 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-14 04:21:05,491 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-14 04:21:05,491 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 04:21:05,492 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 04:21:05,492 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-14 04:21:05,492 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 04:21:05,492 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-14 04:21:05,492 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 04:21:05,493 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 04:21:05,493 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-14 04:21:05,493 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 04:21:05,493 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 04:21:05,493 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-14 04:21:05,494 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-14 04:21:05,494 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 -> /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 -> 23f993c1cfae7b9f66cc8c2fd252077854486eec [2019-01-14 04:21:05,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 04:21:05,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 04:21:05,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 04:21:05,562 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 04:21:05,563 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 04:21:05,563 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/product-lines/minepump_spec2_product62_true-unreach-call_false-termination.cil.c [2019-01-14 04:21:05,624 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe75f401/9840f4c7a54e473988cadb91668f1638/FLAG96229cc6e [2019-01-14 04:21:06,103 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 04:21:06,104 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/product-lines/minepump_spec2_product62_true-unreach-call_false-termination.cil.c [2019-01-14 04:21:06,119 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe75f401/9840f4c7a54e473988cadb91668f1638/FLAG96229cc6e [2019-01-14 04:21:06,421 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe75f401/9840f4c7a54e473988cadb91668f1638 [2019-01-14 04:21:06,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 04:21:06,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 04:21:06,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 04:21:06,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 04:21:06,432 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 04:21:06,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 04:21:06" (1/1) ... [2019-01-14 04:21:06,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b2f0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:06, skipping insertion in model container [2019-01-14 04:21:06,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 04:21:06" (1/1) ... [2019-01-14 04:21:06,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 04:21:06,510 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 04:21:07,025 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 04:21:07,049 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 04:21:07,138 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 04:21:07,255 INFO L195 MainTranslator]: Completed translation [2019-01-14 04:21:07,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07 WrapperNode [2019-01-14 04:21:07,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 04:21:07,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 04:21:07,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 04:21:07,257 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 04:21:07,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (1/1) ... [2019-01-14 04:21:07,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (1/1) ... [2019-01-14 04:21:07,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 04:21:07,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 04:21:07,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 04:21:07,386 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 04:21:07,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (1/1) ... [2019-01-14 04:21:07,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (1/1) ... [2019-01-14 04:21:07,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (1/1) ... [2019-01-14 04:21:07,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (1/1) ... [2019-01-14 04:21:07,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (1/1) ... [2019-01-14 04:21:07,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (1/1) ... [2019-01-14 04:21:07,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (1/1) ... [2019-01-14 04:21:07,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 04:21:07,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 04:21:07,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 04:21:07,492 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 04:21:07,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (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 [2019-01-14 04:21:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 04:21:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-01-14 04:21:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 04:21:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 04:21:09,512 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 04:21:09,513 INFO L286 CfgBuilder]: Removed 352 assue(true) statements. [2019-01-14 04:21:09,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:21:09 BoogieIcfgContainer [2019-01-14 04:21:09,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 04:21:09,516 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-14 04:21:09,516 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-14 04:21:09,520 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-14 04:21:09,521 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 04:21:09,521 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.01 04:21:06" (1/3) ... [2019-01-14 04:21:09,523 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287342f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 04:21:09, skipping insertion in model container [2019-01-14 04:21:09,523 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 04:21:09,523 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:21:07" (2/3) ... [2019-01-14 04:21:09,524 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287342f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 04:21:09, skipping insertion in model container [2019-01-14 04:21:09,525 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 04:21:09,525 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:21:09" (3/3) ... [2019-01-14 04:21:09,527 INFO L375 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product62_true-unreach-call_false-termination.cil.c [2019-01-14 04:21:09,584 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 04:21:09,585 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-14 04:21:09,585 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-14 04:21:09,585 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-14 04:21:09,585 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 04:21:09,585 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 04:21:09,586 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-14 04:21:09,586 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 04:21:09,586 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-14 04:21:09,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 226 states. [2019-01-14 04:21:09,653 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2019-01-14 04:21:09,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 04:21:09,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 04:21:09,663 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:09,664 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:09,664 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-14 04:21:09,664 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 226 states. [2019-01-14 04:21:09,682 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2019-01-14 04:21:09,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 04:21:09,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 04:21:09,686 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:09,686 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:09,692 INFO L794 eck$LassoCheckResult]: Stem: 90#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~head~0.base, ~head~0.offset := 0, 0;call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(30);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(9);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(21);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(25);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string41.base, #t~string41.offset, 1);call write~init~int(77, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(101, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(116, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(104, #t~string41.base, 4 + #t~string41.offset, 1);call write~init~int(58, #t~string41.base, 5 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 6 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string43.base, #t~string43.offset, 1);call write~init~int(82, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(73, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(84, #t~string43.base, 3 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 4 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string45.base, #t~string45.offset, 1);call write~init~int(75, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 2 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string47.base, #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 1 + #t~string47.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1); 13#L-1true havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 18#L692true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 153#L700true main_#t~ret35 := valid_product_#res;main_~tmp~3 := main_#t~ret35;havoc main_#t~ret35; 193#L498true assume 0 != main_~tmp~3; 152#L469true ~methAndRunningLastTime~0 := 0; 176#L529true havoc test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, test_#t~nondet52, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 179#L540-1true [2019-01-14 04:21:09,693 INFO L796 eck$LassoCheckResult]: Loop: 179#L540-1true assume !false; 151#L717true assume test_~splverifierCounter~0 < 4; 204#L718true test_~tmp~5 := test_#t~nondet49;havoc test_#t~nondet49; 127#L726true assume !(0 != test_~tmp~5); 131#L726-1true test_~tmp___0~1 := test_#t~nondet50;havoc test_#t~nondet50; 19#L736true assume !(0 != test_~tmp___0~1); 20#L736-1true test_~tmp___2~0 := test_#t~nondet51;havoc test_#t~nondet51; 188#L746true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 95#L754-2true assume !(0 != ~pumpRunning~0); 45#L782true assume !(0 != ~systemActive~0); 148#L789true havoc __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_#t~ret37, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 137#L610-5true __utac_acc__Specification2_spec__2_#t~ret36 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret36;havoc __utac_acc__Specification2_spec__2_#t~ret36; 174#L540true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 179#L540-1true [2019-01-14 04:21:09,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:09,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2019-01-14 04:21:09,707 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:09,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:09,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:09,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 04:21:09,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:10,518 INFO L82 PathProgramCache]: Analyzing trace with hash 10110539, now seen corresponding path program 1 times [2019-01-14 04:21:10,519 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:10,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:10,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:10,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 04:21:10,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 04:21:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 04:21:10,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 04:21:10,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 04:21:10,587 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-01-14 04:21:10,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 04:21:10,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 04:21:10,605 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2019-01-14 04:21:10,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 04:21:10,759 INFO L93 Difference]: Finished difference Result 226 states and 330 transitions. [2019-01-14 04:21:10,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 04:21:10,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 226 states and 330 transitions. [2019-01-14 04:21:10,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2019-01-14 04:21:10,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 226 states to 219 states and 322 transitions. [2019-01-14 04:21:10,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 219 [2019-01-14 04:21:10,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 219 [2019-01-14 04:21:10,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 322 transitions. [2019-01-14 04:21:10,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 04:21:10,806 INFO L706 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2019-01-14 04:21:10,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 322 transitions. [2019-01-14 04:21:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2019-01-14 04:21:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2019-01-14 04:21:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 322 transitions. [2019-01-14 04:21:10,870 INFO L729 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2019-01-14 04:21:10,870 INFO L609 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2019-01-14 04:21:10,871 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-14 04:21:10,871 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 219 states and 322 transitions. [2019-01-14 04:21:10,875 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2019-01-14 04:21:10,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 04:21:10,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 04:21:10,877 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:10,878 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:10,879 INFO L794 eck$LassoCheckResult]: Stem: 593#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~head~0.base, ~head~0.offset := 0, 0;call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(30);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(9);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(21);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(25);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string41.base, #t~string41.offset, 1);call write~init~int(77, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(101, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(116, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(104, #t~string41.base, 4 + #t~string41.offset, 1);call write~init~int(58, #t~string41.base, 5 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 6 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string43.base, #t~string43.offset, 1);call write~init~int(82, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(73, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(84, #t~string43.base, 3 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 4 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string45.base, #t~string45.offset, 1);call write~init~int(75, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 2 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string47.base, #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 1 + #t~string47.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1); 482#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 483#L692 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 486#L700 main_#t~ret35 := valid_product_#res;main_~tmp~3 := main_#t~ret35;havoc main_#t~ret35; 660#L498 assume 0 != main_~tmp~3; 658#L469 ~methAndRunningLastTime~0 := 0; 659#L529 havoc test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, test_#t~nondet52, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 474#L540-1 [2019-01-14 04:21:10,879 INFO L796 eck$LassoCheckResult]: Loop: 474#L540-1 assume !false; 656#L717 assume test_~splverifierCounter~0 < 4; 657#L718 test_~tmp~5 := test_#t~nondet49;havoc test_#t~nondet49; 634#L726 assume !(0 != test_~tmp~5); 636#L726-1 test_~tmp___0~1 := test_#t~nondet50;havoc test_#t~nondet50; 487#L736 assume !(0 != test_~tmp___0~1); 489#L736-1 test_~tmp___2~0 := test_#t~nondet51;havoc test_#t~nondet51; 490#L746 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 596#L754-2 assume !(0 != ~pumpRunning~0); 538#L782 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret55, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 539#L866 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret54, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 522#L840-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret53, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 523#L814-3 assume !(0 == ~pumpRunning~0); 521#L789 havoc __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_#t~ret37, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 646#L610-5 __utac_acc__Specification2_spec__2_#t~ret36 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret36;havoc __utac_acc__Specification2_spec__2_#t~ret36; 647#L540 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 474#L540-1 [2019-01-14 04:21:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:10,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2019-01-14 04:21:10,883 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:10,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:10,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:10,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 04:21:10,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:11,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1423526727, now seen corresponding path program 1 times [2019-01-14 04:21:11,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:11,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:11,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:11,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 04:21:11,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 04:21:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 04:21:11,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 04:21:11,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 04:21:11,306 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-01-14 04:21:11,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 04:21:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 04:21:11,307 INFO L87 Difference]: Start difference. First operand 219 states and 322 transitions. cyclomatic complexity: 105 Second operand 3 states. [2019-01-14 04:21:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 04:21:11,803 INFO L93 Difference]: Finished difference Result 218 states and 304 transitions. [2019-01-14 04:21:11,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 04:21:11,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 218 states and 304 transitions. [2019-01-14 04:21:11,810 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2019-01-14 04:21:11,813 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 218 states to 218 states and 304 transitions. [2019-01-14 04:21:11,813 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 218 [2019-01-14 04:21:11,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2019-01-14 04:21:11,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 218 states and 304 transitions. [2019-01-14 04:21:11,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 04:21:11,818 INFO L706 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2019-01-14 04:21:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states and 304 transitions. [2019-01-14 04:21:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2019-01-14 04:21:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2019-01-14 04:21:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 304 transitions. [2019-01-14 04:21:11,831 INFO L729 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2019-01-14 04:21:11,831 INFO L609 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2019-01-14 04:21:11,831 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2019-01-14 04:21:11,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 304 transitions. [2019-01-14 04:21:11,834 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2019-01-14 04:21:11,835 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 04:21:11,835 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 04:21:11,836 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:11,836 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:11,837 INFO L794 eck$LassoCheckResult]: Stem: 1054#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~head~0.base, ~head~0.offset := 0, 0;call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(30);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(9);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(21);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(25);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string41.base, #t~string41.offset, 1);call write~init~int(77, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(101, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(116, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(104, #t~string41.base, 4 + #t~string41.offset, 1);call write~init~int(58, #t~string41.base, 5 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 6 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string43.base, #t~string43.offset, 1);call write~init~int(82, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(73, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(84, #t~string43.base, 3 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 4 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string45.base, #t~string45.offset, 1);call write~init~int(75, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 2 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string47.base, #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 1 + #t~string47.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1); 932#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 933#L692 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 940#L700 main_#t~ret35 := valid_product_#res;main_~tmp~3 := main_#t~ret35;havoc main_#t~ret35; 952#L498 assume 0 != main_~tmp~3; 944#L469 ~methAndRunningLastTime~0 := 0; 945#L529 havoc test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, test_#t~nondet52, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 920#L540-1 [2019-01-14 04:21:11,838 INFO L796 eck$LassoCheckResult]: Loop: 920#L540-1 assume !false; 938#L717 assume test_~splverifierCounter~0 < 4; 939#L718 test_~tmp~5 := test_#t~nondet49;havoc test_#t~nondet49; 1065#L726 assume !(0 != test_~tmp~5); 935#L726-1 test_~tmp___0~1 := test_#t~nondet50;havoc test_#t~nondet50; 941#L736 assume !(0 != test_~tmp___0~1); 943#L736-1 test_~tmp___2~0 := test_#t~nondet51;havoc test_#t~nondet51; 946#L746 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1044#L754-2 assume !(0 != ~pumpRunning~0); 1018#L782 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret55, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 906#L866 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret54, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 907#L840-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret53, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 995#L814-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~10, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~10;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 996#L650-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~6 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 997#L655-3 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~10 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 1042#L985-9 assume 0 != isHighWaterLevel_~tmp~10;isHighWaterLevel_~tmp___0~2 := 0; 1036#L985-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1031#L991-3 processEnvironment__wrappee__highWaterSensor_#t~ret53 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret53;havoc processEnvironment__wrappee__highWaterSensor_#t~ret53; 1013#L818-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 913#L789 havoc __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_#t~ret37, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 926#L610-5 __utac_acc__Specification2_spec__2_#t~ret36 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret36;havoc __utac_acc__Specification2_spec__2_#t~ret36; 998#L540 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 920#L540-1 [2019-01-14 04:21:11,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:11,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2019-01-14 04:21:11,839 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:11,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:11,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:11,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 04:21:11,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:12,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:12,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1081607637, now seen corresponding path program 1 times [2019-01-14 04:21:12,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:12,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:12,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:12,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 04:21:12,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 04:21:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 04:21:12,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 04:21:12,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 04:21:12,333 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-01-14 04:21:12,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 04:21:12,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 04:21:12,333 INFO L87 Difference]: Start difference. First operand 218 states and 304 transitions. cyclomatic complexity: 88 Second operand 4 states. [2019-01-14 04:21:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 04:21:13,180 INFO L93 Difference]: Finished difference Result 604 states and 826 transitions. [2019-01-14 04:21:13,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 04:21:13,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 604 states and 826 transitions. [2019-01-14 04:21:13,189 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 420 [2019-01-14 04:21:13,195 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 604 states to 604 states and 826 transitions. [2019-01-14 04:21:13,195 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 604 [2019-01-14 04:21:13,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 604 [2019-01-14 04:21:13,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 604 states and 826 transitions. [2019-01-14 04:21:13,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 04:21:13,200 INFO L706 BuchiCegarLoop]: Abstraction has 604 states and 826 transitions. [2019-01-14 04:21:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states and 826 transitions. [2019-01-14 04:21:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 236. [2019-01-14 04:21:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-01-14 04:21:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 322 transitions. [2019-01-14 04:21:13,216 INFO L729 BuchiCegarLoop]: Abstraction has 236 states and 322 transitions. [2019-01-14 04:21:13,216 INFO L609 BuchiCegarLoop]: Abstraction has 236 states and 322 transitions. [2019-01-14 04:21:13,216 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2019-01-14 04:21:13,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states and 322 transitions. [2019-01-14 04:21:13,219 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 160 [2019-01-14 04:21:13,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 04:21:13,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 04:21:13,221 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:13,221 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:13,221 INFO L794 eck$LassoCheckResult]: Stem: 1904#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~head~0.base, ~head~0.offset := 0, 0;call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(30);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(9);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(21);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(25);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string41.base, #t~string41.offset, 1);call write~init~int(77, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(101, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(116, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(104, #t~string41.base, 4 + #t~string41.offset, 1);call write~init~int(58, #t~string41.base, 5 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 6 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string43.base, #t~string43.offset, 1);call write~init~int(82, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(73, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(84, #t~string43.base, 3 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 4 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string45.base, #t~string45.offset, 1);call write~init~int(75, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 2 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string47.base, #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 1 + #t~string47.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1); 1765#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 1766#L692 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1773#L700 main_#t~ret35 := valid_product_#res;main_~tmp~3 := main_#t~ret35;havoc main_#t~ret35; 1785#L498 assume 0 != main_~tmp~3; 1777#L469 ~methAndRunningLastTime~0 := 0; 1778#L529 havoc test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, test_#t~nondet52, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1752#L540-1 [2019-01-14 04:21:13,221 INFO L796 eck$LassoCheckResult]: Loop: 1752#L540-1 assume !false; 1771#L717 assume test_~splverifierCounter~0 < 4; 1772#L718 test_~tmp~5 := test_#t~nondet49;havoc test_#t~nondet49; 1917#L726 assume !(0 != test_~tmp~5); 1768#L726-1 test_~tmp___0~1 := test_#t~nondet50;havoc test_#t~nondet50; 1774#L736 assume !(0 != test_~tmp___0~1); 1776#L736-1 test_~tmp___2~0 := test_#t~nondet51;havoc test_#t~nondet51; 1779#L746 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1893#L754-2 assume !(0 != ~pumpRunning~0); 1861#L782 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret55, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 1738#L866 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret54, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 1739#L840-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret53, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1834#L814-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~10, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~10;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1835#L650-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~6 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1836#L655-3 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~10 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 1909#L985-9 assume !(0 != isHighWaterLevel_~tmp~10);isHighWaterLevel_~tmp___0~2 := 1; 1884#L985-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1878#L991-3 processEnvironment__wrappee__highWaterSensor_#t~ret53 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret53;havoc processEnvironment__wrappee__highWaterSensor_#t~ret53; 1855#L818-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1745#L789 havoc __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_#t~ret37, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 1936#L610-5 __utac_acc__Specification2_spec__2_#t~ret36 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret36;havoc __utac_acc__Specification2_spec__2_#t~ret36; 1838#L540 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 1752#L540-1 [2019-01-14 04:21:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:13,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2019-01-14 04:21:13,228 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:13,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:13,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:13,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 04:21:13,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:13,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:13,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1438352297, now seen corresponding path program 1 times [2019-01-14 04:21:13,536 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:13,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:13,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:13,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 04:21:13,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 04:21:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 04:21:13,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 04:21:13,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 04:21:13,752 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-01-14 04:21:13,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 04:21:13,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 04:21:13,753 INFO L87 Difference]: Start difference. First operand 236 states and 322 transitions. cyclomatic complexity: 88 Second operand 5 states. [2019-01-14 04:21:14,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 04:21:14,201 INFO L93 Difference]: Finished difference Result 541 states and 733 transitions. [2019-01-14 04:21:14,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 04:21:14,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 541 states and 733 transitions. [2019-01-14 04:21:14,212 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 378 [2019-01-14 04:21:14,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 541 states to 541 states and 733 transitions. [2019-01-14 04:21:14,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 541 [2019-01-14 04:21:14,218 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 541 [2019-01-14 04:21:14,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 541 states and 733 transitions. [2019-01-14 04:21:14,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 04:21:14,220 INFO L706 BuchiCegarLoop]: Abstraction has 541 states and 733 transitions. [2019-01-14 04:21:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states and 733 transitions. [2019-01-14 04:21:14,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 263. [2019-01-14 04:21:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2019-01-14 04:21:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 349 transitions. [2019-01-14 04:21:14,231 INFO L729 BuchiCegarLoop]: Abstraction has 263 states and 349 transitions. [2019-01-14 04:21:14,231 INFO L609 BuchiCegarLoop]: Abstraction has 263 states and 349 transitions. [2019-01-14 04:21:14,231 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2019-01-14 04:21:14,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 263 states and 349 transitions. [2019-01-14 04:21:14,234 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 178 [2019-01-14 04:21:14,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 04:21:14,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 04:21:14,235 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:14,235 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 04:21:14,236 INFO L794 eck$LassoCheckResult]: Stem: 2711#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~head~0.base, ~head~0.offset := 0, 0;call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(30);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(9);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(21);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(30);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(9);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(25);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string41.base, #t~string41.offset, 1);call write~init~int(77, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(101, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(116, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(104, #t~string41.base, 4 + #t~string41.offset, 1);call write~init~int(58, #t~string41.base, 5 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 6 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string43.base, #t~string43.offset, 1);call write~init~int(82, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(73, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(84, #t~string43.base, 3 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 4 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string45.base, #t~string45.offset, 1);call write~init~int(75, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 2 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string47.base, #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 1 + #t~string47.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1); 2555#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 2556#L692 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 2563#L700 main_#t~ret35 := valid_product_#res;main_~tmp~3 := main_#t~ret35;havoc main_#t~ret35; 2574#L498 assume 0 != main_~tmp~3; 2567#L469 ~methAndRunningLastTime~0 := 0; 2568#L529 havoc test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, test_#t~nondet52, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2543#L540-1 [2019-01-14 04:21:14,236 INFO L796 eck$LassoCheckResult]: Loop: 2543#L540-1 assume !false; 2561#L717 assume test_~splverifierCounter~0 < 4; 2562#L718 test_~tmp~5 := test_#t~nondet49;havoc test_#t~nondet49; 2722#L726 assume !(0 != test_~tmp~5); 2558#L726-1 test_~tmp___0~1 := test_#t~nondet50;havoc test_#t~nondet50; 2781#L736 assume !(0 != test_~tmp___0~1); 2778#L736-1 test_~tmp___2~0 := test_#t~nondet51;havoc test_#t~nondet51; 2697#L746 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2699#L754-2 assume !(0 != ~pumpRunning~0); 2655#L782 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret55, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 2529#L866 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret54, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 2530#L840-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret53, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 2625#L814-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~10, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~10;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 2626#L650-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 2628#L655-3 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~10 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 2750#L985-9 assume 0 != isHighWaterLevel_~tmp~10;isHighWaterLevel_~tmp___0~2 := 0; 2751#L985-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 2677#L991-3 processEnvironment__wrappee__highWaterSensor_#t~ret53 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret53;havoc processEnvironment__wrappee__highWaterSensor_#t~ret53; 2678#L818-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 2536#L789 havoc __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_#t~ret37, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 2549#L610-5 __utac_acc__Specification2_spec__2_#t~ret36 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret36;havoc __utac_acc__Specification2_spec__2_#t~ret36; 2629#L540 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 2543#L540-1 [2019-01-14 04:21:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:14,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2019-01-14 04:21:14,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:14,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:14,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:14,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 04:21:14,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:14,496 INFO L82 PathProgramCache]: Analyzing trace with hash 401549267, now seen corresponding path program 1 times [2019-01-14 04:21:14,497 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:14,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:14,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:14,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 04:21:14,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:14,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 04:21:14,510 INFO L82 PathProgramCache]: Analyzing trace with hash -465635175, now seen corresponding path program 1 times [2019-01-14 04:21:14,511 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 04:21:14,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 04:21:14,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:14,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 04:21:14,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 04:21:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 04:21:15,766 WARN L181 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-01-14 04:21:15,882 WARN L181 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-01-14 04:21:44,219 WARN L181 SmtUtils]: Spent 28.31 s on a formula simplification. DAG size of input: 455 DAG size of output: 453 [2019-01-14 04:21:57,761 WARN L181 SmtUtils]: Spent 13.53 s on a formula simplification that was a NOOP. DAG size: 451 [2019-01-14 04:21:57,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.01 04:21:57 BoogieIcfgContainer [2019-01-14 04:21:57,853 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-14 04:21:57,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 04:21:57,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 04:21:57,854 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 04:21:57,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:21:09" (3/4) ... [2019-01-14 04:21:57,859 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-14 04:21:57,967 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 04:21:57,968 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 04:21:57,969 INFO L168 Benchmark]: Toolchain (without parser) took 51543.14 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 349.7 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -200.4 MB). Peak memory consumption was 149.3 MB. Max. memory is 11.5 GB. [2019-01-14 04:21:57,971 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 04:21:57,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-01-14 04:21:57,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.49 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. [2019-01-14 04:21:57,977 INFO L168 Benchmark]: Boogie Preprocessor took 105.16 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. [2019-01-14 04:21:57,982 INFO L168 Benchmark]: RCFGBuilder took 2023.13 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: 78.4 MB). Peak memory consumption was 78.4 MB. Max. memory is 11.5 GB. [2019-01-14 04:21:57,983 INFO L168 Benchmark]: BuchiAutomizer took 48337.52 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 209.2 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -111.5 MB). Peak memory consumption was 394.4 MB. Max. memory is 11.5 GB. [2019-01-14 04:21:57,985 INFO L168 Benchmark]: Witness Printer took 114.18 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-01-14 04:21:57,997 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 827.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 129.49 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 105.16 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. * RCFGBuilder took 2023.13 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: 78.4 MB). Peak memory consumption was 78.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 48337.52 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 209.2 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -111.5 MB). Peak memory consumption was 394.4 MB. Max. memory is 11.5 GB. * Witness Printer took 114.18 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 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 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 263 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 48.2s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 45.9s. Construction of modules took 1.5s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 646 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 263 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1359 SDtfs, 1705 SDslu, 1436 SDs, 0 SdLazy, 274 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time LassoAnalysisResults: nont1 unkn0 SFLI4 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: 716]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4391} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=4391, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1403b761=0, NULL=-18, NULL=0, NULL=0, NULL=0, NULL=-19, NULL=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@286962d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49e34fcc=61, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40d93c38=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37361382=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@605f1fd8=0, NULL=0, NULL=0, tmp=0, NULL=-14, NULL=0, tmp___1=0, NULL=-15, NULL=-5, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a75c465=0, NULL=-24, NULL=-11, NULL=-10, cleanupTimeShifts=4, NULL=-12, NULL=-1, tmp=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=-9, NULL=0, NULL=0, \result=0, NULL=-16, retValue_acc=0, \result=1, NULL=-2, head=0, pumpRunning=0, \result=0, retValue_acc=1, NULL=-4, tmp=1, NULL=0, NULL=0, \result=1, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f5edb63=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@765b6d99=0, NULL=-22, retValue_acc=1, NULL=-20, NULL=-7, NULL=0, retValue_acc=0, NULL=0, tmp___2=61, NULL=-8, tmp___0=0, tmp=1, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61bf39d=0, methAndRunningLastTime=0, \result=0, NULL=-23, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f031ebb=0, NULL=-17, head=0, NULL=0, NULL=-3, NULL=4390, NULL=0, NULL=-13, NULL=0, tmp=0, NULL=0, NULL=0, NULL=-6, tmp=0, tmp=0, NULL=-21} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L523] int methAndRunningLastTime ; [L567] int waterLevel = 1; [L568] int methaneLevelCritical = 0; [L775] int pumpRunning = 0; [L776] int systemActive = 1; [L489] int retValue_acc ; [L490] int tmp ; [L696] int retValue_acc ; [L699] retValue_acc = 1 [L700] return (retValue_acc); [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) [L528] methAndRunningLastTime = 0 [L707] int splverifierCounter ; [L708] int tmp ; [L709] int tmp___0 ; [L710] int tmp___1 ; [L711] int tmp___2 ; [L714] splverifierCounter = 0 Loop: [L716] COND TRUE 1 [L718] COND TRUE splverifierCounter < 4 [L724] tmp = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp)) [L734] tmp___0 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___0)) [L744] tmp___2 = __VERIFIER_nondet_int() [L746] COND TRUE \read(tmp___2) [L1018] systemActive = 1 [L782] COND FALSE !(\read(pumpRunning)) [L789] COND TRUE \read(systemActive) [L863] int tmp ; [L866] COND FALSE !(\read(pumpRunning)) [L837] int tmp ; [L840] COND FALSE !(\read(pumpRunning)) [L811] int tmp ; [L814] COND TRUE ! pumpRunning [L977] int retValue_acc ; [L978] int tmp ; [L979] int tmp___0 ; [L647] int retValue_acc ; [L650] COND TRUE waterLevel < 2 [L651] retValue_acc = 1 [L652] return (retValue_acc); [L983] tmp = isHighWaterSensorDry() [L985] COND TRUE \read(tmp) [L986] tmp___0 = 0 [L990] retValue_acc = tmp___0 [L991] return (retValue_acc); [L816] tmp = isHighWaterLevel() [L818] COND FALSE !(\read(tmp)) [L533] int tmp ; [L534] int tmp___0 ; [L606] int retValue_acc ; [L609] retValue_acc = methaneLevelCritical [L610] return (retValue_acc); [L538] tmp = isMethaneLevelCritical() [L540] COND FALSE !(\read(tmp)) [L556] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...