java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --sifa.abstract.domain IntervalDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.intern.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_DDA -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-17 10:19:19,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-17 10:19:19,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-17 10:19:19,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-17 10:19:19,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-17 10:19:19,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-17 10:19:19,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-17 10:19:19,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-17 10:19:19,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-17 10:19:19,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-17 10:19:19,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-17 10:19:19,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-17 10:19:19,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-17 10:19:19,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-17 10:19:19,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-17 10:19:19,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-17 10:19:19,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-17 10:19:19,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-17 10:19:19,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-17 10:19:19,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-17 10:19:19,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-17 10:19:19,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-17 10:19:19,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-17 10:19:19,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-17 10:19:19,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-17 10:19:19,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-17 10:19:19,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-17 10:19:19,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-17 10:19:19,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-17 10:19:19,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-17 10:19:19,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-17 10:19:19,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-17 10:19:19,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-17 10:19:19,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-17 10:19:19,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-17 10:19:19,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-17 10:19:19,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-17 10:19:19,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-17 10:19:19,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-17 10:19:19,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-17 10:19:19,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-17 10:19:19,799 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 [2019-09-17 10:19:19,813 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-17 10:19:19,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-17 10:19:19,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-17 10:19:19,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-17 10:19:19,815 INFO L138 SettingsManager]: * Use SBE=true [2019-09-17 10:19:19,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-17 10:19:19,815 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-17 10:19:19,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-17 10:19:19,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-17 10:19:19,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-17 10:19:19,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-17 10:19:19,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-17 10:19:19,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-17 10:19:19,816 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-17 10:19:19,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-17 10:19:19,817 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-17 10:19:19,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-17 10:19:19,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-17 10:19:19,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-17 10:19:19,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-17 10:19:19,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-17 10:19:19,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-17 10:19:19,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-17 10:19:19,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-17 10:19:19,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-17 10:19:19,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-17 10:19:19,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-17 10:19:19,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-17 10:19:19,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Intern Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_DDA [2019-09-17 10:19:19,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-17 10:19:19,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-17 10:19:19,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-17 10:19:19,866 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-17 10:19:19,866 INFO L275 PluginConnector]: CDTParser initialized [2019-09-17 10:19:19,867 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product17.cil.c [2019-09-17 10:19:19,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1f2d20b/828dc143473d4f8eb4ab856f9745897e/FLAG1edc45cb5 [2019-09-17 10:19:20,405 INFO L306 CDTParser]: Found 1 translation units. [2019-09-17 10:19:20,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product17.cil.c [2019-09-17 10:19:20,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1f2d20b/828dc143473d4f8eb4ab856f9745897e/FLAG1edc45cb5 [2019-09-17 10:19:20,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1f2d20b/828dc143473d4f8eb4ab856f9745897e [2019-09-17 10:19:20,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-17 10:19:20,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-17 10:19:20,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-17 10:19:20,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-17 10:19:20,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-17 10:19:20,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 10:19:20" (1/1) ... [2019-09-17 10:19:20,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@869f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:20, skipping insertion in model container [2019-09-17 10:19:20,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 10:19:20" (1/1) ... [2019-09-17 10:19:20,794 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-17 10:19:20,860 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-17 10:19:21,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-17 10:19:21,301 INFO L188 MainTranslator]: Completed pre-run [2019-09-17 10:19:21,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-17 10:19:21,460 INFO L192 MainTranslator]: Completed translation [2019-09-17 10:19:21,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:21 WrapperNode [2019-09-17 10:19:21,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-17 10:19:21,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-17 10:19:21,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-17 10:19:21,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-17 10:19:21,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:21" (1/1) ... [2019-09-17 10:19:21,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:21" (1/1) ... [2019-09-17 10:19:21,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:21" (1/1) ... [2019-09-17 10:19:21,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:21" (1/1) ... [2019-09-17 10:19:21,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:21" (1/1) ... [2019-09-17 10:19:21,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:21" (1/1) ... [2019-09-17 10:19:21,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:21" (1/1) ... [2019-09-17 10:19:21,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-17 10:19:21,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-17 10:19:21,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-17 10:19:21,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-17 10:19:21,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:19:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 [2019-09-17 10:19:21,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-17 10:19:21,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-17 10:19:21,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-17 10:19:21,654 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-17 10:19:21,655 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-17 10:19:21,655 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-17 10:19:21,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-17 10:19:21,656 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-17 10:19:21,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-17 10:19:21,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-17 10:19:21,656 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-17 10:19:21,657 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-17 10:19:21,657 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-17 10:19:21,657 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-17 10:19:21,658 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-17 10:19:21,658 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-17 10:19:21,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-17 10:19:21,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-17 10:19:21,660 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-17 10:19:21,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-17 10:19:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-17 10:19:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-17 10:19:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-17 10:19:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-17 10:19:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-17 10:19:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-17 10:19:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-17 10:19:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-17 10:19:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-17 10:19:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-17 10:19:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-17 10:19:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-17 10:19:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-17 10:19:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-17 10:19:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-17 10:19:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-17 10:19:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-17 10:19:21,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-17 10:19:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-17 10:19:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-17 10:19:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-17 10:19:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-17 10:19:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-17 10:19:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-17 10:19:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-17 10:19:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-17 10:19:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-17 10:19:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-17 10:19:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-17 10:19:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-17 10:19:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-17 10:19:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-17 10:19:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-17 10:19:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-17 10:19:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-17 10:19:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-17 10:19:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-17 10:19:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-17 10:19:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-17 10:19:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-17 10:19:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-17 10:19:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-17 10:19:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-17 10:19:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-17 10:19:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-17 10:19:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-17 10:19:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-17 10:19:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-17 10:19:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-17 10:19:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-17 10:19:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-17 10:19:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-17 10:19:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-17 10:19:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-17 10:19:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-17 10:19:21,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-17 10:19:21,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-17 10:19:21,673 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-17 10:19:21,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-17 10:19:21,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-17 10:19:21,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-17 10:19:21,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-17 10:19:21,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-17 10:19:21,674 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-17 10:19:21,674 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-17 10:19:21,675 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-17 10:19:21,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-17 10:19:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-17 10:19:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-17 10:19:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-17 10:19:23,227 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-17 10:19:23,228 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-17 10:19:23,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 10:19:23 BoogieIcfgContainer [2019-09-17 10:19:23,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-17 10:19:23,230 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-17 10:19:23,230 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-17 10:19:23,231 INFO L275 PluginConnector]: Sifa initialized [2019-09-17 10:19:23,232 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 10:19:23" (1/1) ... [2019-09-17 10:19:23,232 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=IntervalDomain ♦ Abstract when formula's dag size exceeds (negative numbers disable this limit)=-1 ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ Abstract when formula has more disjuncts than (negative numbers disable this limit)=8 ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ Simplification Technique=SIMPLIFY_DDA ♦ Intern Fluid=SizeLimitFluid [2019-09-17 10:19:23,262 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-17 10:19:23,265 INFO L169 IcfgInterpreter]: Building call graph [2019-09-17 10:19:23,277 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-17 10:19:23,291 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-17 10:19:23,293 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-17 10:19:47,872 WARN L191 SmtUtils]: Spent 14.80 s on a formula simplification that was a NOOP. DAG size: 466 [2019-09-17 10:19:49,642 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-09-17 10:19:53,566 WARN L191 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 474 DAG size of output: 424 [2019-09-17 10:19:53,852 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-09-17 10:19:53,865 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 117 for LOIs [2019-09-17 10:19:53,914 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 117 for LOIs [2019-09-17 10:19:53,928 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 117 for LOIs [2019-09-17 10:19:54,393 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:19:54,766 WARN L191 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:19:55,150 WARN L191 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:19:55,521 WARN L191 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:19:55,939 WARN L191 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:19:56,289 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:19:57,474 WARN L191 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:19:58,499 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:19:58,874 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:19:59,888 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2019-09-17 10:20:00,958 WARN L191 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:20:01,966 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:20:02,321 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:20:03,339 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2019-09-17 10:20:04,341 WARN L191 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:20:05,341 WARN L191 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:20:05,688 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:20:06,686 WARN L191 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2019-09-17 10:20:07,689 WARN L191 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:20:08,693 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:20:09,037 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:20:10,048 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2019-09-17 10:20:10,052 INFO L199 IcfgInterpreter]: Interpreting procedure cleanup with input of size 1 for LOIs [2019-09-17 10:20:10,054 INFO L199 IcfgInterpreter]: Interpreting procedure timeShift with input of size 110 for LOIs [2019-09-17 10:20:10,777 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2019-09-17 10:20:11,017 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-09-17 10:20:11,253 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-09-17 10:20:11,256 INFO L199 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification2_spec__2 with input of size 104 for LOIs [2019-09-17 10:20:11,263 INFO L199 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 104 for LOIs [2019-09-17 10:20:11,505 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-17 10:20:11,506 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-17 10:20:11,506 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-17 10:20:11,508 INFO L193 IcfgInterpreter]: Reachable states at location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 290#(and (<= 0 |#t~string62.offset|) (<= 0 |#t~string27.offset|) (<= ~head~0.base 0) (<= 0 |#t~string19.offset|) (<= 0 ~head~0.offset) (<= 0 |#NULL.base|) (<= 0 |#t~string17.offset|) (<= 0 |#t~string63.offset|) (<= |#t~string31.offset| 0) (<= ~systemActive~0 1) (<= 0 |#t~string52.offset|) (<= ~head~0.offset 0) (<= |#t~string52.offset| 0) (<= 0 |#t~string64.offset|) (<= |#t~string55.offset| 0) (<= |#t~string56.offset| 0) (<= 0 |#t~string21.offset|) (<= |#t~string1.offset| 0) (<= |#t~string57.offset| 0) (<= 0 |#t~string1.offset|) (<= 0 ~head~0.base) (<= |#NULL.offset| 0) (<= |#t~string7.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= |#t~string9.offset| 0) (<= |#t~string64.offset| 0) (<= |#t~string53.offset| 0) (<= 0 |#t~string61.offset|) (<= |#t~string65.offset| 0) (<= |#t~string27.offset| 0) (<= 0 |#t~string65.offset|) (<= 0 |#t~string56.offset|) (<= 0 |#t~string53.offset|) (<= |#t~string66.offset| 0) (<= 0 |#t~string7.offset|) (<= 0 |#t~string9.offset|) (<= |#t~string21.offset| 0) (<= |#t~string61.offset| 0) (<= 0 |#t~string54.offset|) (<= 0 |#t~string23.offset|) (<= 0 |#NULL.offset|) (<= ~cleanupTimeShifts~0 4) (<= 0 |#t~string29.offset|) (<= 0 |#t~string5.offset|) (<= |#t~string62.offset| 0) (<= |#t~string3.offset| 0) (<= |#t~string5.offset| 0) (<= ~methaneLevelCritical~0 1) (<= |#NULL.base| 0) (<= |#t~string63.offset| 0) (<= 0 |#t~string66.offset|) (<= 1 ~systemActive~0) (<= 0 |#t~string31.offset|) (<= |#t~string23.offset| 0) (<= |#t~string17.offset| 0) (<= 4 ~cleanupTimeShifts~0) (<= |#t~string54.offset| 0) (<= |#t~string29.offset| 0) (<= 0 |#t~string55.offset|) (<= |#t~string19.offset| 0) (<= 0 |#t~string3.offset|) (<= 0 |#t~string25.offset|) (<= 0 ~methAndRunningLastTime~0) (<= |#t~string25.offset| 0) (<= 0 |#t~string57.offset|)) [2019-09-17 10:20:11,521 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-17 10:20:11,521 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-17 10:20:11,522 INFO L168 Benchmark]: Toolchain (without parser) took 50748.21 ms. Allocated memory was 135.3 MB in the beginning and 552.6 MB in the end (delta: 417.3 MB). Free memory was 86.2 MB in the beginning and 513.8 MB in the end (delta: -427.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-17 10:20:11,523 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-17 10:20:11,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.79 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 86.0 MB in the beginning and 163.8 MB in the end (delta: -77.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2019-09-17 10:20:11,525 INFO L168 Benchmark]: Boogie Preprocessor took 113.49 ms. Allocated memory is still 200.3 MB. Free memory was 163.8 MB in the beginning and 160.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2019-09-17 10:20:11,526 INFO L168 Benchmark]: RCFGBuilder took 1654.21 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 160.1 MB in the beginning and 147.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. [2019-09-17 10:20:11,527 INFO L168 Benchmark]: Sifa took 48290.84 ms. Allocated memory was 224.9 MB in the beginning and 552.6 MB in the end (delta: 327.7 MB). Free memory was 147.0 MB in the beginning and 513.8 MB in the end (delta: -366.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-17 10:20:11,530 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.79 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 86.0 MB in the beginning and 163.8 MB in the end (delta: -77.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.49 ms. Allocated memory is still 200.3 MB. Free memory was 163.8 MB in the beginning and 160.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1654.21 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 160.1 MB in the beginning and 147.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. * Sifa took 48290.84 ms. Allocated memory was 224.9 MB in the beginning and 552.6 MB in the end (delta: 327.7 MB). Free memory was 147.0 MB in the beginning and 513.8 MB in the end (delta: -366.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.sifa: - StatisticsResult: Symbolic Interpretation with Fluid Abstractions OVERALL_TIME[ms]: 48247, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 186, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 128, TOOLS_POST_TIME[ms]: 30253, TOOLS_POST_CALL_APPLICATIONS: 51, TOOLS_POST_CALL_TIME[ms]: 140, TOOLS_POST_RETURN_APPLICATIONS: 44, TOOLS_POST_RETURN_TIME[ms]: 46, TOOLS_QUANTIFIERELIM_APPLICATIONS: 222, TOOLS_QUANTIFIERELIM_TIME[ms]: 30349, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 30188, FLUID_QUERY_TIME[ms]: 9, FLUID_QUERIES: 190, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 63, DOMAIN_JOIN_TIME[ms]: 17509, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 7, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 39, DOMAIN_ISBOTTOM_TIME[ms]: 137, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 13746, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 13745, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 44, CALL_SUMMARIZER_CACHE_MISSES: 21, CALL_SUMMARIZER_OVERALL_TIME[ms]: 30730, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 30729, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 6, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 35, DAG_COMPRESSION_PROCESSED_NODES: 386, DAG_COMPRESSION_RETAINED_NODES: 176 - UnprovableResult [Line: 402]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 290#(and (<= 0 |#t~string62.offset|) (<= 0 |#t~string27.offset|) (<= ~head~0.base 0) (<= 0 |#t~string19.offset|) (<= 0 ~head~0.offset) (<= 0 |#NULL.base|) (<= 0 |#t~string17.offset|) (<= 0 |#t~string63.offset|) (<= |#t~string31.offset| 0) (<= ~systemActive~0 1) (<= 0 |#t~string52.offset|) (<= ~head~0.offset 0) (<= |#t~string52.offset| 0) (<= 0 |#t~string64.offset|) (<= |#t~string55.offset| 0) (<= |#t~string56.offset| 0) (<= 0 |#t~string21.offset|) (<= |#t~string1.offset| 0) (<= |#t~string57.offset| 0) (<= 0 |#t~string1.offset|) (<= 0 ~head~0.base) (<= |#NULL.offset| 0) (<= |#t~string7.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= |#t~string9.offset| 0) (<= |#t~string64.offset| 0) (<= |#t~string53.offset| 0) (<= 0 |#t~string61.offset|) (<= |#t~string65.offset| 0) (<= |#t~string27.offset| 0) (<= 0 |#t~string65.offset|) (<= 0 |#t~string56.offset|) (<= 0 |#t~string53.offset|) (<= |#t~string66.offset| 0) (<= 0 |#t~string7.offset|) (<= 0 |#t~string9.offset|) (<= |#t~string21.offset| 0) (<= |#t~string61.offset| 0) (<= 0 |#t~string54.offset|) (<= 0 |#t~string23.offset|) (<= 0 |#NULL.offset|) (<= ~cleanupTimeShifts~0 4) (<= 0 |#t~string29.offset|) (<= 0 |#t~string5.offset|) (<= |#t~string62.offset| 0) (<= |#t~string3.offset| 0) (<= |#t~string5.offset| 0) (<= ~methaneLevelCritical~0 1) (<= |#NULL.base| 0) (<= |#t~string63.offset| 0) (<= 0 |#t~string66.offset|) (<= 1 ~systemActive~0) (<= 0 |#t~string31.offset|) (<= |#t~string23.offset| 0) (<= |#t~string17.offset| 0) (<= 4 ~cleanupTimeShifts~0) (<= |#t~string54.offset| 0) (<= |#t~string29.offset| 0) (<= 0 |#t~string55.offset|) (<= |#t~string19.offset| 0) (<= 0 |#t~string3.offset|) (<= 0 |#t~string25.offset|) (<= 0 ~methAndRunningLastTime~0) (<= |#t~string25.offset| 0) (<= 0 |#t~string57.offset|)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...