/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:02:15,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:02:15,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:02:15,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:02:15,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:02:15,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:02:15,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:02:15,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:02:15,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:02:15,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:02:15,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:02:15,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:02:15,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:02:15,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:02:15,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:02:15,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:02:15,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:02:15,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:02:15,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:02:15,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:02:15,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:02:15,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:02:15,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:02:15,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:02:15,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 01:02:15,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 01:02:15,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 01:02:15,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 01:02:15,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 01:02:15,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 01:02:15,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 01:02:15,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 01:02:15,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 01:02:15,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 01:02:15,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 01:02:15,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 01:02:15,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 01:02:15,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 01:02:15,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:02:15,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:02:15,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:02:15,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 01:02:15,452 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:02:15,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:02:15,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:02:15,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:02:15,455 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:02:15,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:02:15,455 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:02:15,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:02:15,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:02:15,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:02:15,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:02:15,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:02:15,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:02:15,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:02:15,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:02:15,458 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:02:15,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:02:15,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:02:15,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:02:15,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:02:15,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:02:15,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:02:15,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:02:15,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:02:15,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:02:15,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:02:15,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:02:15,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:02:15,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 01:02:15,746 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:02:15,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:02:15,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:02:15,765 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:02:15,765 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:02:15,766 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product04.cil.c [2019-11-07 01:02:15,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2404c0c6/18d397d591a0443c85198f437104aab0/FLAGaf4961a1e [2019-11-07 01:02:16,390 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:02:16,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product04.cil.c [2019-11-07 01:02:16,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2404c0c6/18d397d591a0443c85198f437104aab0/FLAGaf4961a1e [2019-11-07 01:02:16,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2404c0c6/18d397d591a0443c85198f437104aab0 [2019-11-07 01:02:16,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:02:16,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:02:16,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:02:16,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:02:16,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:02:16,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:16" (1/1) ... [2019-11-07 01:02:16,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e69abf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:16, skipping insertion in model container [2019-11-07 01:02:16,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:16" (1/1) ... [2019-11-07 01:02:16,761 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:02:16,814 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:02:17,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:02:17,265 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:02:17,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:02:17,423 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:02:17,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17 WrapperNode [2019-11-07 01:02:17,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:02:17,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:02:17,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:02:17,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:02:17,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17" (1/1) ... [2019-11-07 01:02:17,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17" (1/1) ... [2019-11-07 01:02:17,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17" (1/1) ... [2019-11-07 01:02:17,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17" (1/1) ... [2019-11-07 01:02:17,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17" (1/1) ... [2019-11-07 01:02:17,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17" (1/1) ... [2019-11-07 01:02:17,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17" (1/1) ... [2019-11-07 01:02:17,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:02:17,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:02:17,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:02:17,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:02:17,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:02:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:02:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:02:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 01:02:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-07 01:02:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-07 01:02:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-07 01:02:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 01:02:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 01:02:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 01:02:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 01:02:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 01:02:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 01:02:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 01:02:17,566 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 01:02:17,566 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-07 01:02:17,566 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 01:02:17,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 01:02:17,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 01:02:17,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 01:02:17,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 01:02:17,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 01:02:17,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 01:02:17,567 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 01:02:17,567 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 01:02:17,567 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 01:02:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 01:02:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 01:02:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 01:02:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 01:02:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 01:02:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 01:02:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 01:02:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:02:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 01:02:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 01:02:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 01:02:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 01:02:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 01:02:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:02:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:02:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 01:02:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 01:02:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 01:02:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 01:02:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 01:02:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 01:02:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 01:02:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 01:02:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 01:02:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 01:02:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 01:02:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 01:02:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 01:02:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:02:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 01:02:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 01:02:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 01:02:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 01:02:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 01:02:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 01:02:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:02:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 01:02:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 01:02:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:02:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 01:02:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 01:02:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:02:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 01:02:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 01:02:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 01:02:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 01:02:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 01:02:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 01:02:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 01:02:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 01:02:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 01:02:17,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:02:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 01:02:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:02:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 01:02:17,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:02:18,717 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:02:18,717 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 01:02:18,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:18 BoogieIcfgContainer [2019-11-07 01:02:18,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:02:18,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:02:18,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:02:18,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:02:18,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:02:16" (1/3) ... [2019-11-07 01:02:18,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a44498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:02:18, skipping insertion in model container [2019-11-07 01:02:18,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:17" (2/3) ... [2019-11-07 01:02:18,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a44498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:02:18, skipping insertion in model container [2019-11-07 01:02:18,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:18" (3/3) ... [2019-11-07 01:02:18,729 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product04.cil.c [2019-11-07 01:02:18,739 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:02:18,751 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:02:18,762 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:02:18,787 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:02:18,787 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:02:18,788 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:02:18,788 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:02:18,788 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:02:18,788 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:02:18,788 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:02:18,788 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:02:18,809 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2019-11-07 01:02:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 01:02:18,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:02:18,819 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:02:18,821 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:02:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:02:18,827 INFO L82 PathProgramCache]: Analyzing trace with hash 765786489, now seen corresponding path program 1 times [2019-11-07 01:02:18,839 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:02:18,839 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470877090] [2019-11-07 01:02:18,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:02:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:02:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 01:02:19,245 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470877090] [2019-11-07 01:02:19,246 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:02:19,247 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 01:02:19,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744497608] [2019-11-07 01:02:19,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 01:02:19,257 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:02:19,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 01:02:19,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 01:02:19,275 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 2 states. [2019-11-07 01:02:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:02:19,342 INFO L93 Difference]: Finished difference Result 204 states and 253 transitions. [2019-11-07 01:02:19,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 01:02:19,343 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-11-07 01:02:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:02:19,358 INFO L225 Difference]: With dead ends: 204 [2019-11-07 01:02:19,358 INFO L226 Difference]: Without dead ends: 104 [2019-11-07 01:02:19,362 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 01:02:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-07 01:02:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-11-07 01:02:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-07 01:02:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2019-11-07 01:02:19,417 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 59 [2019-11-07 01:02:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:02:19,417 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2019-11-07 01:02:19,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 01:02:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2019-11-07 01:02:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 01:02:19,422 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:02:19,423 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:02:19,423 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:02:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:02:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1248196221, now seen corresponding path program 1 times [2019-11-07 01:02:19,424 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:02:19,424 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696127955] [2019-11-07 01:02:19,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:02:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:02:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 01:02:19,533 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696127955] [2019-11-07 01:02:19,534 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:02:19,534 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:02:19,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888693027] [2019-11-07 01:02:19,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:02:19,538 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:02:19,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:02:19,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:02:19,539 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand 3 states. [2019-11-07 01:02:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:02:19,572 INFO L93 Difference]: Finished difference Result 140 states and 161 transitions. [2019-11-07 01:02:19,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:02:19,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-11-07 01:02:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:02:19,575 INFO L225 Difference]: With dead ends: 140 [2019-11-07 01:02:19,575 INFO L226 Difference]: Without dead ends: 95 [2019-11-07 01:02:19,577 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:02:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-07 01:02:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-11-07 01:02:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-07 01:02:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2019-11-07 01:02:19,591 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 60 [2019-11-07 01:02:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:02:19,592 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2019-11-07 01:02:19,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:02:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2019-11-07 01:02:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-07 01:02:19,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:02:19,595 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:02:19,595 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:02:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:02:19,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1685147273, now seen corresponding path program 1 times [2019-11-07 01:02:19,596 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:02:19,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296934673] [2019-11-07 01:02:19,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:02:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:02:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 01:02:19,787 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296934673] [2019-11-07 01:02:19,787 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:02:19,787 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 01:02:19,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412283195] [2019-11-07 01:02:19,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 01:02:19,788 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:02:19,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 01:02:19,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:02:19,789 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand 7 states. [2019-11-07 01:02:20,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:02:20,201 INFO L93 Difference]: Finished difference Result 285 states and 344 transitions. [2019-11-07 01:02:20,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 01:02:20,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-11-07 01:02:20,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:02:20,206 INFO L225 Difference]: With dead ends: 285 [2019-11-07 01:02:20,206 INFO L226 Difference]: Without dead ends: 218 [2019-11-07 01:02:20,207 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-07 01:02:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2019-11-07 01:02:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 194. [2019-11-07 01:02:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2019-11-07 01:02:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2019-11-07 01:02:20,242 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 65 [2019-11-07 01:02:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:02:20,243 INFO L462 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2019-11-07 01:02:20,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 01:02:20,244 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2019-11-07 01:02:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-07 01:02:20,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:02:20,287 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:02:20,288 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:02:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:02:20,288 INFO L82 PathProgramCache]: Analyzing trace with hash 173694809, now seen corresponding path program 1 times [2019-11-07 01:02:20,289 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:02:20,289 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255459856] [2019-11-07 01:02:20,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:02:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:02:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 01:02:20,405 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255459856] [2019-11-07 01:02:20,405 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:02:20,405 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:02:20,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807855199] [2019-11-07 01:02:20,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:02:20,406 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:02:20,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:02:20,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:02:20,407 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand 6 states. [2019-11-07 01:02:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:02:20,577 INFO L93 Difference]: Finished difference Result 344 states and 423 transitions. [2019-11-07 01:02:20,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 01:02:20,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2019-11-07 01:02:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:02:20,579 INFO L225 Difference]: With dead ends: 344 [2019-11-07 01:02:20,579 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 01:02:20,582 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:02:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 01:02:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 01:02:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 01:02:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 01:02:20,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2019-11-07 01:02:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:02:20,583 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 01:02:20,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:02:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 01:02:20,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 01:02:20,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 01:02:20,982 INFO L443 ceAbstractionStarter]: For program point L384(line 384) no Hoare annotation was computed. [2019-11-07 01:02:20,983 INFO L443 ceAbstractionStarter]: For program point L383-2(lines 383 404) no Hoare annotation was computed. [2019-11-07 01:02:20,983 INFO L443 ceAbstractionStarter]: For program point L405(lines 382 406) no Hoare annotation was computed. [2019-11-07 01:02:20,983 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_freeFINAL(lines 358 413) no Hoare annotation was computed. [2019-11-07 01:02:20,983 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_freeEXIT(lines 358 413) no Hoare annotation was computed. [2019-11-07 01:02:20,983 INFO L443 ceAbstractionStarter]: For program point L389(lines 389 393) no Hoare annotation was computed. [2019-11-07 01:02:20,983 INFO L443 ceAbstractionStarter]: For program point L389-1(lines 389 393) no Hoare annotation was computed. [2019-11-07 01:02:20,984 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_freeENTRY(lines 358 413) no Hoare annotation was computed. [2019-11-07 01:02:20,984 INFO L443 ceAbstractionStarter]: For program point L446(lines 446 450) no Hoare annotation was computed. [2019-11-07 01:02:20,984 INFO L443 ceAbstractionStarter]: For program point L446-1(lines 446 450) no Hoare annotation was computed. [2019-11-07 01:02:20,984 INFO L443 ceAbstractionStarter]: For program point L441(line 441) no Hoare annotation was computed. [2019-11-07 01:02:20,984 INFO L443 ceAbstractionStarter]: For program point L440-2(lines 440 465) no Hoare annotation was computed. [2019-11-07 01:02:20,985 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_resetFINAL(lines 414 473) no Hoare annotation was computed. [2019-11-07 01:02:20,985 INFO L443 ceAbstractionStarter]: For program point L466(lines 439 467) no Hoare annotation was computed. [2019-11-07 01:02:20,985 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_resetENTRY(lines 414 473) no Hoare annotation was computed. [2019-11-07 01:02:20,985 INFO L443 ceAbstractionStarter]: For program point L459(line 459) no Hoare annotation was computed. [2019-11-07 01:02:20,985 INFO L443 ceAbstractionStarter]: For program point L459-1(line 459) no Hoare annotation was computed. [2019-11-07 01:02:20,985 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_resetEXIT(lines 414 473) no Hoare annotation was computed. [2019-11-07 01:02:20,986 INFO L446 ceAbstractionStarter]: At program point select_helpersFINAL(lines 879 885) the Hoare annotation is: true [2019-11-07 01:02:20,986 INFO L443 ceAbstractionStarter]: For program point select_helpersEXIT(lines 879 885) no Hoare annotation was computed. [2019-11-07 01:02:20,986 INFO L443 ceAbstractionStarter]: For program point valid_productEXIT(lines 886 894) no Hoare annotation was computed. [2019-11-07 01:02:20,986 INFO L446 ceAbstractionStarter]: At program point valid_productENTRY(lines 886 894) the Hoare annotation is: true [2019-11-07 01:02:20,986 INFO L443 ceAbstractionStarter]: For program point valid_productFINAL(lines 886 894) no Hoare annotation was computed. [2019-11-07 01:02:20,987 INFO L446 ceAbstractionStarter]: At program point __utac_acc__Specification5_spec__1ENTRY(lines 44 51) the Hoare annotation is: true [2019-11-07 01:02:20,987 INFO L443 ceAbstractionStarter]: For program point __utac_acc__Specification5_spec__1EXIT(lines 44 51) no Hoare annotation was computed. [2019-11-07 01:02:20,987 INFO L443 ceAbstractionStarter]: For program point __utac_acc__Specification5_spec__1FINAL(lines 44 51) no Hoare annotation was computed. [2019-11-07 01:02:20,987 INFO L446 ceAbstractionStarter]: At program point __utac_acc__Specification5_spec__2ENTRY(lines 52 61) the Hoare annotation is: true [2019-11-07 01:02:20,987 INFO L443 ceAbstractionStarter]: For program point __utac_acc__Specification5_spec__2EXIT(lines 52 61) no Hoare annotation was computed. [2019-11-07 01:02:20,987 INFO L443 ceAbstractionStarter]: For program point L57(line 57) no Hoare annotation was computed. [2019-11-07 01:02:20,987 INFO L443 ceAbstractionStarter]: For program point __utac_acc__Specification5_spec__2FINAL(lines 52 61) no Hoare annotation was computed. [2019-11-07 01:02:20,988 INFO L446 ceAbstractionStarter]: At program point __utac_acc__Specification5_spec__3ENTRY(lines 62 90) the Hoare annotation is: true [2019-11-07 01:02:20,988 INFO L439 ceAbstractionStarter]: At program point L77(line 77) the Hoare annotation is: (not (= 0 ~pumpRunning~0)) [2019-11-07 01:02:20,988 INFO L443 ceAbstractionStarter]: For program point __utac_acc__Specification5_spec__3EXIT(lines 62 90) no Hoare annotation was computed. [2019-11-07 01:02:20,988 INFO L443 ceAbstractionStarter]: For program point L75(lines 75 81) no Hoare annotation was computed. [2019-11-07 01:02:20,988 INFO L443 ceAbstractionStarter]: For program point L74(lines 74 84) no Hoare annotation was computed. [2019-11-07 01:02:20,988 INFO L446 ceAbstractionStarter]: At program point L72(line 72) the Hoare annotation is: true [2019-11-07 01:02:20,989 INFO L443 ceAbstractionStarter]: For program point L72-1(line 72) no Hoare annotation was computed. [2019-11-07 01:02:20,989 INFO L443 ceAbstractionStarter]: For program point L70(lines 70 87) no Hoare annotation was computed. [2019-11-07 01:02:20,989 INFO L443 ceAbstractionStarter]: For program point L70-1(lines 62 90) no Hoare annotation was computed. [2019-11-07 01:02:20,989 INFO L446 ceAbstractionStarter]: At program point L68(line 68) the Hoare annotation is: true [2019-11-07 01:02:20,989 INFO L443 ceAbstractionStarter]: For program point L68-1(line 68) no Hoare annotation was computed. [2019-11-07 01:02:20,989 INFO L439 ceAbstractionStarter]: At program point L834-1(line 834) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (and (= 1 ~systemActive~0) (= ~pumpRunning~0 0))) [2019-11-07 01:02:20,990 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 828 850) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (and (= 1 ~systemActive~0) (= ~pumpRunning~0 0))) [2019-11-07 01:02:20,990 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 828 850) no Hoare annotation was computed. [2019-11-07 01:02:20,990 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 828 850) no Hoare annotation was computed. [2019-11-07 01:02:20,990 INFO L439 ceAbstractionStarter]: At program point L840(line 840) the Hoare annotation is: (or (and (= 1 ~systemActive~0) (= main_~tmp~5 ~systemActive~0) (= ~pumpRunning~0 0)) (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1))) [2019-11-07 01:02:20,990 INFO L439 ceAbstractionStarter]: At program point L840-1(line 840) the Hoare annotation is: (or (and (= 1 ~systemActive~0) (= main_~tmp~5 ~systemActive~0) (= ~pumpRunning~0 0)) (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1))) [2019-11-07 01:02:20,990 INFO L443 ceAbstractionStarter]: For program point L838(lines 838 845) no Hoare annotation was computed. [2019-11-07 01:02:20,991 INFO L443 ceAbstractionStarter]: For program point L838-1(lines 838 845) no Hoare annotation was computed. [2019-11-07 01:02:20,991 INFO L443 ceAbstractionStarter]: For program point L836(line 836) no Hoare annotation was computed. [2019-11-07 01:02:20,991 INFO L439 ceAbstractionStarter]: At program point L835(line 835) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (and (= 1 ~systemActive~0) (= ~pumpRunning~0 0))) [2019-11-07 01:02:20,991 INFO L439 ceAbstractionStarter]: At program point L834(line 834) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (and (= 1 ~systemActive~0) (= ~pumpRunning~0 0))) [2019-11-07 01:02:20,991 INFO L443 ceAbstractionStarter]: For program point L801(line 801) no Hoare annotation was computed. [2019-11-07 01:02:20,991 INFO L443 ceAbstractionStarter]: For program point L800(line 800) no Hoare annotation was computed. [2019-11-07 01:02:20,991 INFO L443 ceAbstractionStarter]: For program point Specification2EXIT(lines 783 806) no Hoare annotation was computed. [2019-11-07 01:02:20,992 INFO L443 ceAbstractionStarter]: For program point L799(line 799) no Hoare annotation was computed. [2019-11-07 01:02:20,992 INFO L443 ceAbstractionStarter]: For program point L798(line 798) no Hoare annotation was computed. [2019-11-07 01:02:20,992 INFO L443 ceAbstractionStarter]: For program point L797(line 797) no Hoare annotation was computed. [2019-11-07 01:02:20,992 INFO L443 ceAbstractionStarter]: For program point Specification2ENTRY(lines 783 806) no Hoare annotation was computed. [2019-11-07 01:02:20,992 INFO L443 ceAbstractionStarter]: For program point L796(line 796) no Hoare annotation was computed. [2019-11-07 01:02:20,992 INFO L443 ceAbstractionStarter]: For program point Specification2FINAL(lines 783 806) no Hoare annotation was computed. [2019-11-07 01:02:20,992 INFO L443 ceAbstractionStarter]: For program point L795(line 795) no Hoare annotation was computed. [2019-11-07 01:02:20,993 INFO L443 ceAbstractionStarter]: For program point L794(line 794) no Hoare annotation was computed. [2019-11-07 01:02:20,993 INFO L443 ceAbstractionStarter]: For program point L793(line 793) no Hoare annotation was computed. [2019-11-07 01:02:20,993 INFO L443 ceAbstractionStarter]: For program point L792(line 792) no Hoare annotation was computed. [2019-11-07 01:02:20,993 INFO L443 ceAbstractionStarter]: For program point L791(line 791) no Hoare annotation was computed. [2019-11-07 01:02:20,993 INFO L443 ceAbstractionStarter]: For program point L790(line 790) no Hoare annotation was computed. [2019-11-07 01:02:20,993 INFO L443 ceAbstractionStarter]: For program point L789(line 789) no Hoare annotation was computed. [2019-11-07 01:02:20,993 INFO L443 ceAbstractionStarter]: For program point L788(line 788) no Hoare annotation was computed. [2019-11-07 01:02:20,993 INFO L443 ceAbstractionStarter]: For program point stopSystemEXIT(lines 282 296) no Hoare annotation was computed. [2019-11-07 01:02:20,994 INFO L439 ceAbstractionStarter]: At program point L288(line 288) the Hoare annotation is: (not (= 0 |old(~pumpRunning~0)|)) [2019-11-07 01:02:20,994 INFO L443 ceAbstractionStarter]: For program point L286(lines 286 292) no Hoare annotation was computed. [2019-11-07 01:02:20,994 INFO L439 ceAbstractionStarter]: At program point stopSystemENTRY(lines 282 296) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~pumpRunning~0 0)) [2019-11-07 01:02:20,994 INFO L443 ceAbstractionStarter]: For program point stopSystemFINAL(lines 282 296) no Hoare annotation was computed. [2019-11-07 01:02:20,994 INFO L443 ceAbstractionStarter]: For program point isPumpRunningEXIT(lines 237 245) no Hoare annotation was computed. [2019-11-07 01:02:20,994 INFO L446 ceAbstractionStarter]: At program point isPumpRunningENTRY(lines 237 245) the Hoare annotation is: true [2019-11-07 01:02:20,995 INFO L443 ceAbstractionStarter]: For program point isPumpRunningFINAL(lines 237 245) no Hoare annotation was computed. [2019-11-07 01:02:20,995 INFO L443 ceAbstractionStarter]: For program point L253(lines 253 261) no Hoare annotation was computed. [2019-11-07 01:02:20,995 INFO L443 ceAbstractionStarter]: For program point L253-2(lines 253 261) no Hoare annotation was computed. [2019-11-07 01:02:20,995 INFO L443 ceAbstractionStarter]: For program point L276(line 276) no Hoare annotation was computed. [2019-11-07 01:02:20,995 INFO L443 ceAbstractionStarter]: For program point L276-1(line 276) no Hoare annotation was computed. [2019-11-07 01:02:20,995 INFO L443 ceAbstractionStarter]: For program point printPumpFINAL(lines 246 281) no Hoare annotation was computed. [2019-11-07 01:02:20,995 INFO L443 ceAbstractionStarter]: For program point L265(lines 265 273) no Hoare annotation was computed. [2019-11-07 01:02:20,996 INFO L443 ceAbstractionStarter]: For program point L265-2(lines 265 273) no Hoare annotation was computed. [2019-11-07 01:02:20,996 INFO L443 ceAbstractionStarter]: For program point printPumpENTRY(lines 246 281) no Hoare annotation was computed. [2019-11-07 01:02:20,996 INFO L443 ceAbstractionStarter]: For program point printPumpEXIT(lines 246 281) no Hoare annotation was computed. [2019-11-07 01:02:20,996 INFO L443 ceAbstractionStarter]: For program point select_featuresEXIT(lines 872 878) no Hoare annotation was computed. [2019-11-07 01:02:20,996 INFO L446 ceAbstractionStarter]: At program point select_featuresFINAL(lines 872 878) the Hoare annotation is: true [2019-11-07 01:02:20,997 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_setENTRY(lines 312 357) no Hoare annotation was computed. [2019-11-07 01:02:20,997 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_setEXIT(lines 312 357) no Hoare annotation was computed. [2019-11-07 01:02:20,997 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_setFINAL(lines 312 357) no Hoare annotation was computed. [2019-11-07 01:02:20,997 INFO L443 ceAbstractionStarter]: For program point L639(lines 639 659) no Hoare annotation was computed. [2019-11-07 01:02:20,997 INFO L443 ceAbstractionStarter]: For program point L639-1(lines 639 659) no Hoare annotation was computed. [2019-11-07 01:02:20,997 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argtypeFINAL(lines 625 670) no Hoare annotation was computed. [2019-11-07 01:02:20,998 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argtypeENTRY(lines 625 670) no Hoare annotation was computed. [2019-11-07 01:02:20,998 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argtypeEXIT(lines 625 670) no Hoare annotation was computed. [2019-11-07 01:02:20,998 INFO L443 ceAbstractionStarter]: For program point L645(lines 645 652) no Hoare annotation was computed. [2019-11-07 01:02:20,998 INFO L439 ceAbstractionStarter]: At program point runTestENTRY(lines 814 824) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (and (= 1 ~systemActive~0) (= ~pumpRunning~0 0))) [2019-11-07 01:02:20,998 INFO L443 ceAbstractionStarter]: For program point runTestEXIT(lines 814 824) no Hoare annotation was computed. [2019-11-07 01:02:20,998 INFO L443 ceAbstractionStarter]: For program point runTestFINAL(lines 814 824) no Hoare annotation was computed. [2019-11-07 01:02:20,999 INFO L439 ceAbstractionStarter]: At program point L819(line 819) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (and (= 1 ~systemActive~0) (= ~pumpRunning~0 0))) [2019-11-07 01:02:20,999 INFO L443 ceAbstractionStarter]: For program point isMethaneAlarmENTRY(lines 226 236) no Hoare annotation was computed. [2019-11-07 01:02:20,999 INFO L443 ceAbstractionStarter]: For program point isMethaneAlarmEXIT(lines 226 236) no Hoare annotation was computed. [2019-11-07 01:02:20,999 INFO L443 ceAbstractionStarter]: For program point L231(line 231) no Hoare annotation was computed. [2019-11-07 01:02:20,999 INFO L443 ceAbstractionStarter]: For program point isMethaneAlarmFINAL(lines 226 236) no Hoare annotation was computed. [2019-11-07 01:02:21,000 INFO L443 ceAbstractionStarter]: For program point L231-1(line 231) no Hoare annotation was computed. [2019-11-07 01:02:21,000 INFO L446 ceAbstractionStarter]: At program point deactivatePumpENTRY(lines 218 225) the Hoare annotation is: true [2019-11-07 01:02:21,000 INFO L443 ceAbstractionStarter]: For program point deactivatePumpEXIT(lines 218 225) no Hoare annotation was computed. [2019-11-07 01:02:21,000 INFO L443 ceAbstractionStarter]: For program point deactivatePumpFINAL(lines 218 225) no Hoare annotation was computed. [2019-11-07 01:02:21,000 INFO L443 ceAbstractionStarter]: For program point processEnvironmentEXIT(lines 203 209) no Hoare annotation was computed. [2019-11-07 01:02:21,001 INFO L446 ceAbstractionStarter]: At program point processEnvironmentFINAL(lines 203 209) the Hoare annotation is: true [2019-11-07 01:02:21,001 INFO L443 ceAbstractionStarter]: For program point L128(lines 128 134) no Hoare annotation was computed. [2019-11-07 01:02:21,001 INFO L439 ceAbstractionStarter]: At program point testENTRY(lines 98 165) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (and (= 1 ~systemActive~0) (= ~pumpRunning~0 0))) [2019-11-07 01:02:21,001 INFO L443 ceAbstractionStarter]: For program point L128-1(lines 128 134) no Hoare annotation was computed. [2019-11-07 01:02:21,001 INFO L439 ceAbstractionStarter]: At program point L155(lines 108 157) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1))) [2019-11-07 01:02:21,001 INFO L439 ceAbstractionStarter]: At program point L120(line 120) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1))) [2019-11-07 01:02:21,002 INFO L443 ceAbstractionStarter]: For program point testFINAL(lines 98 165) no Hoare annotation was computed. [2019-11-07 01:02:21,002 INFO L443 ceAbstractionStarter]: For program point L118(lines 118 124) no Hoare annotation was computed. [2019-11-07 01:02:21,002 INFO L443 ceAbstractionStarter]: For program point L118-1(lines 118 124) no Hoare annotation was computed. [2019-11-07 01:02:21,002 INFO L443 ceAbstractionStarter]: For program point L110(lines 110 114) no Hoare annotation was computed. [2019-11-07 01:02:21,002 INFO L439 ceAbstractionStarter]: At program point L158(lines 107 159) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1))) [2019-11-07 01:02:21,002 INFO L439 ceAbstractionStarter]: At program point L148(line 148) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1))) [2019-11-07 01:02:21,002 INFO L443 ceAbstractionStarter]: For program point L146(lines 146 152) no Hoare annotation was computed. [2019-11-07 01:02:21,003 INFO L439 ceAbstractionStarter]: At program point L146-1(lines 138 153) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1))) [2019-11-07 01:02:21,003 INFO L443 ceAbstractionStarter]: For program point L109(lines 108 157) no Hoare annotation was computed. [2019-11-07 01:02:21,003 INFO L439 ceAbstractionStarter]: At program point L140(line 140) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1))) [2019-11-07 01:02:21,003 INFO L443 ceAbstractionStarter]: For program point L138(lines 138 153) no Hoare annotation was computed. [2019-11-07 01:02:21,003 INFO L443 ceAbstractionStarter]: For program point testEXIT(lines 98 165) no Hoare annotation was computed. [2019-11-07 01:02:21,003 INFO L439 ceAbstractionStarter]: At program point L130(line 130) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1))) [2019-11-07 01:02:21,003 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argENTRY(lines 579 624) no Hoare annotation was computed. [2019-11-07 01:02:21,004 INFO L443 ceAbstractionStarter]: For program point L599(lines 599 606) no Hoare annotation was computed. [2019-11-07 01:02:21,004 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argEXIT(lines 579 624) no Hoare annotation was computed. [2019-11-07 01:02:21,004 INFO L443 ceAbstractionStarter]: For program point L593(lines 593 613) no Hoare annotation was computed. [2019-11-07 01:02:21,004 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argFINAL(lines 579 624) no Hoare annotation was computed. [2019-11-07 01:02:21,004 INFO L443 ceAbstractionStarter]: For program point L593-1(lines 593 613) no Hoare annotation was computed. [2019-11-07 01:02:21,004 INFO L443 ceAbstractionStarter]: For program point printEnvironmentEXIT(lines 719 741) no Hoare annotation was computed. [2019-11-07 01:02:21,005 INFO L443 ceAbstractionStarter]: For program point L727(lines 727 735) no Hoare annotation was computed. [2019-11-07 01:02:21,005 INFO L443 ceAbstractionStarter]: For program point printEnvironmentENTRY(lines 719 741) no Hoare annotation was computed. [2019-11-07 01:02:21,005 INFO L443 ceAbstractionStarter]: For program point L727-2(lines 727 735) no Hoare annotation was computed. [2019-11-07 01:02:21,005 INFO L443 ceAbstractionStarter]: For program point printEnvironmentFINAL(lines 719 741) no Hoare annotation was computed. [2019-11-07 01:02:21,005 INFO L443 ceAbstractionStarter]: For program point __utac__error_stack_mgtENTRY(lines 476 578) no Hoare annotation was computed. [2019-11-07 01:02:21,005 INFO L443 ceAbstractionStarter]: For program point L541(line 541) no Hoare annotation was computed. [2019-11-07 01:02:21,005 INFO L443 ceAbstractionStarter]: For program point L541-1(line 541) no Hoare annotation was computed. [2019-11-07 01:02:21,005 INFO L443 ceAbstractionStarter]: For program point L500(lines 500 504) no Hoare annotation was computed. [2019-11-07 01:02:21,006 INFO L443 ceAbstractionStarter]: For program point L564(lines 564 575) no Hoare annotation was computed. [2019-11-07 01:02:21,006 INFO L443 ceAbstractionStarter]: For program point L527(lines 527 531) no Hoare annotation was computed. [2019-11-07 01:02:21,006 INFO L443 ceAbstractionStarter]: For program point L525-2(lines 525 545) no Hoare annotation was computed. [2019-11-07 01:02:21,006 INFO L443 ceAbstractionStarter]: For program point __utac__error_stack_mgtFINAL(lines 476 578) no Hoare annotation was computed. [2019-11-07 01:02:21,006 INFO L443 ceAbstractionStarter]: For program point L546(lines 524 547) no Hoare annotation was computed. [2019-11-07 01:02:21,006 INFO L443 ceAbstractionStarter]: For program point L505(lines 505 521) no Hoare annotation was computed. [2019-11-07 01:02:21,006 INFO L443 ceAbstractionStarter]: For program point L565(lines 565 572) no Hoare annotation was computed. [2019-11-07 01:02:21,007 INFO L443 ceAbstractionStarter]: For program point __utac__error_stack_mgtEXIT(lines 476 578) no Hoare annotation was computed. [2019-11-07 01:02:21,007 INFO L443 ceAbstractionStarter]: For program point L526(lines 525 545) no Hoare annotation was computed. [2019-11-07 01:02:21,007 INFO L443 ceAbstractionStarter]: For program point L557(line 557) no Hoare annotation was computed. [2019-11-07 01:02:21,007 INFO L443 ceAbstractionStarter]: For program point L557-1(line 557) no Hoare annotation was computed. [2019-11-07 01:02:21,007 INFO L443 ceAbstractionStarter]: For program point L522(lines 522 563) no Hoare annotation was computed. [2019-11-07 01:02:21,007 INFO L443 ceAbstractionStarter]: For program point select_oneENTRY(lines 862 871) no Hoare annotation was computed. [2019-11-07 01:02:21,007 INFO L443 ceAbstractionStarter]: For program point select_oneFINAL(lines 862 871) no Hoare annotation was computed. [2019-11-07 01:02:21,007 INFO L443 ceAbstractionStarter]: For program point select_oneEXIT(lines 862 871) no Hoare annotation was computed. [2019-11-07 01:02:21,008 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-07 01:02:21,008 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 01:02:21,008 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 01:02:21,008 INFO L443 ceAbstractionStarter]: For program point activatePumpFINAL(lines 210 217) no Hoare annotation was computed. [2019-11-07 01:02:21,008 INFO L443 ceAbstractionStarter]: For program point activatePumpEXIT(lines 210 217) no Hoare annotation was computed. [2019-11-07 01:02:21,008 INFO L443 ceAbstractionStarter]: For program point activatePumpENTRY(lines 210 217) no Hoare annotation was computed. [2019-11-07 01:02:21,008 INFO L446 ceAbstractionStarter]: At program point getWaterLevelENTRY(lines 742 750) the Hoare annotation is: true [2019-11-07 01:02:21,008 INFO L443 ceAbstractionStarter]: For program point getWaterLevelFINAL(lines 742 750) no Hoare annotation was computed. [2019-11-07 01:02:21,009 INFO L443 ceAbstractionStarter]: For program point getWaterLevelEXIT(lines 742 750) no Hoare annotation was computed. [2019-11-07 01:02:21,009 INFO L443 ceAbstractionStarter]: For program point L702-1(lines 698 709) no Hoare annotation was computed. [2019-11-07 01:02:21,009 INFO L446 ceAbstractionStarter]: At program point changeMethaneLevelENTRY(lines 698 709) the Hoare annotation is: true [2019-11-07 01:02:21,009 INFO L443 ceAbstractionStarter]: For program point changeMethaneLevelEXIT(lines 698 709) no Hoare annotation was computed. [2019-11-07 01:02:21,009 INFO L443 ceAbstractionStarter]: For program point ##fun~int~X~int~TO~intEXIT(line -1) no Hoare annotation was computed. [2019-11-07 01:02:21,009 INFO L443 ceAbstractionStarter]: For program point ##fun~int~X~int~TO~intENTRY(line -1) no Hoare annotation was computed. [2019-11-07 01:02:21,009 INFO L443 ceAbstractionStarter]: For program point ##fun~int~X~int~TO~intFINAL(line -1) no Hoare annotation was computed. [2019-11-07 01:02:21,009 INFO L439 ceAbstractionStarter]: At program point L192(line 192) the Hoare annotation is: (or (not (= 0 ~pumpRunning~0)) (not (= 0 ~systemActive~0))) [2019-11-07 01:02:21,010 INFO L446 ceAbstractionStarter]: At program point L190(lines 190 196) the Hoare annotation is: true [2019-11-07 01:02:21,010 INFO L439 ceAbstractionStarter]: At program point L185(line 185) the Hoare annotation is: (not (= 0 ~pumpRunning~0)) [2019-11-07 01:02:21,010 INFO L443 ceAbstractionStarter]: For program point L183(lines 179 201) no Hoare annotation was computed. [2019-11-07 01:02:21,010 INFO L443 ceAbstractionStarter]: For program point L181(lines 179 201) no Hoare annotation was computed. [2019-11-07 01:02:21,010 INFO L446 ceAbstractionStarter]: At program point timeShiftENTRY(lines 176 202) the Hoare annotation is: true [2019-11-07 01:02:21,010 INFO L443 ceAbstractionStarter]: For program point timeShiftEXIT(lines 176 202) no Hoare annotation was computed. [2019-11-07 01:02:21,010 INFO L443 ceAbstractionStarter]: For program point timeShiftFINAL(lines 176 202) no Hoare annotation was computed. [2019-11-07 01:02:21,011 INFO L443 ceAbstractionStarter]: For program point cleanupEXIT(lines 753 782) no Hoare annotation was computed. [2019-11-07 01:02:21,011 INFO L443 ceAbstractionStarter]: For program point L767(lines 767 771) no Hoare annotation was computed. [2019-11-07 01:02:21,011 INFO L446 ceAbstractionStarter]: At program point L767-1(lines 767 771) the Hoare annotation is: true [2019-11-07 01:02:21,011 INFO L446 ceAbstractionStarter]: At program point cleanupENTRY(lines 753 782) the Hoare annotation is: true [2019-11-07 01:02:21,011 INFO L443 ceAbstractionStarter]: For program point L764(line 764) no Hoare annotation was computed. [2019-11-07 01:02:21,011 INFO L446 ceAbstractionStarter]: At program point L763-2(lines 763 777) the Hoare annotation is: true [2019-11-07 01:02:21,011 INFO L446 ceAbstractionStarter]: At program point L759(line 759) the Hoare annotation is: true [2019-11-07 01:02:21,011 INFO L443 ceAbstractionStarter]: For program point L759-1(line 759) no Hoare annotation was computed. [2019-11-07 01:02:21,012 INFO L446 ceAbstractionStarter]: At program point L778(lines 753 782) the Hoare annotation is: true [2019-11-07 01:02:21,012 INFO L443 ceAbstractionStarter]: For program point L774(line 774) no Hoare annotation was computed. [2019-11-07 01:02:21,012 INFO L443 ceAbstractionStarter]: For program point isMethaneLevelCriticalENTRY(lines 710 718) no Hoare annotation was computed. [2019-11-07 01:02:21,012 INFO L443 ceAbstractionStarter]: For program point isMethaneLevelCriticalFINAL(lines 710 718) no Hoare annotation was computed. [2019-11-07 01:02:21,012 INFO L443 ceAbstractionStarter]: For program point isMethaneLevelCriticalEXIT(lines 710 718) no Hoare annotation was computed. [2019-11-07 01:02:21,012 INFO L446 ceAbstractionStarter]: At program point lowerWaterLevelENTRY(lines 674 685) the Hoare annotation is: true [2019-11-07 01:02:21,012 INFO L443 ceAbstractionStarter]: For program point lowerWaterLevelEXIT(lines 674 685) no Hoare annotation was computed. [2019-11-07 01:02:21,012 INFO L443 ceAbstractionStarter]: For program point L678-1(lines 674 685) no Hoare annotation was computed. [2019-11-07 01:02:21,013 INFO L443 ceAbstractionStarter]: For program point setupEXIT(lines 807 813) no Hoare annotation was computed. [2019-11-07 01:02:21,013 INFO L446 ceAbstractionStarter]: At program point setupFINAL(lines 807 813) the Hoare annotation is: true [2019-11-07 01:02:21,013 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 01:02:21,013 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= 1 ~systemActive~0) (= ~pumpRunning~0 0)) [2019-11-07 01:02:21,013 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 01:02:21,013 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 01:02:21,013 INFO L443 ceAbstractionStarter]: For program point startSystemEXIT(lines 297 304) no Hoare annotation was computed. [2019-11-07 01:02:21,013 INFO L446 ceAbstractionStarter]: At program point startSystemENTRY(lines 297 304) the Hoare annotation is: true [2019-11-07 01:02:21,014 INFO L443 ceAbstractionStarter]: For program point startSystemFINAL(lines 297 304) no Hoare annotation was computed. [2019-11-07 01:02:21,014 INFO L443 ceAbstractionStarter]: For program point L690-1(lines 686 697) no Hoare annotation was computed. [2019-11-07 01:02:21,014 INFO L443 ceAbstractionStarter]: For program point waterRiseEXIT(lines 686 697) no Hoare annotation was computed. [2019-11-07 01:02:21,014 INFO L446 ceAbstractionStarter]: At program point waterRiseENTRY(lines 686 697) the Hoare annotation is: true [2019-11-07 01:02:21,014 INFO L443 ceAbstractionStarter]: For program point __automaton_failFINAL(lines 852 859) no Hoare annotation was computed. [2019-11-07 01:02:21,014 INFO L446 ceAbstractionStarter]: At program point __automaton_failENTRY(lines 852 859) the Hoare annotation is: true [2019-11-07 01:02:21,015 INFO L443 ceAbstractionStarter]: For program point __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 856) no Hoare annotation was computed. [2019-11-07 01:02:21,015 INFO L443 ceAbstractionStarter]: For program point __automaton_failEXIT(lines 852 859) no Hoare annotation was computed. [2019-11-07 01:02:21,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:02:21 BoogieIcfgContainer [2019-11-07 01:02:21,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 01:02:21,033 INFO L168 Benchmark]: Toolchain (without parser) took 4288.43 ms. Allocated memory was 138.9 MB in the beginning and 245.9 MB in the end (delta: 107.0 MB). Free memory was 100.9 MB in the beginning and 105.4 MB in the end (delta: -4.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. [2019-11-07 01:02:21,034 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-07 01:02:21,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.02 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 169.6 MB in the end (delta: -68.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2019-11-07 01:02:21,038 INFO L168 Benchmark]: Boogie Preprocessor took 80.63 ms. Allocated memory is still 202.4 MB. Free memory was 169.6 MB in the beginning and 165.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2019-11-07 01:02:21,040 INFO L168 Benchmark]: RCFGBuilder took 1214.19 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 165.7 MB in the beginning and 200.1 MB in the end (delta: -34.4 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. [2019-11-07 01:02:21,045 INFO L168 Benchmark]: TraceAbstraction took 2309.05 ms. Allocated memory was 235.9 MB in the beginning and 245.9 MB in the end (delta: 10.0 MB). Free memory was 198.7 MB in the beginning and 105.4 MB in the end (delta: 93.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 7.1 GB. [2019-11-07 01:02:21,056 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.02 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 169.6 MB in the end (delta: -68.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.63 ms. Allocated memory is still 202.4 MB. Free memory was 169.6 MB in the beginning and 165.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1214.19 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 165.7 MB in the beginning and 200.1 MB in the end (delta: -34.4 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2309.05 ms. Allocated memory was 235.9 MB in the beginning and 245.9 MB in the end (delta: 10.0 MB). Free memory was 198.7 MB in the beginning and 105.4 MB in the end (delta: 93.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 856]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 108]: Loop Invariant Derived loop invariant: (!(0 == \old(pumpRunning)) || (0 == splverifierCounter && pumpRunning == 0)) || !(\old(systemActive) == 1) - InvariantResult [Line: 763]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: !(0 == \old(pumpRunning)) || !(\old(systemActive) == 1) - InvariantResult [Line: 753]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 214 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 465 SDtfs, 225 SDslu, 795 SDs, 0 SdLazy, 218 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 49 LocationsWithAnnotation, 202 PreInvPairs, 224 NumberOfFragments, 318 HoareAnnotationTreeSize, 202 FomulaSimplifications, 129 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 49 FomulaSimplificationsInter, 587 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 25622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...