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_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-21 09:13:20,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-21 09:13:20,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-21 09:13:20,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-21 09:13:20,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-21 09:13:20,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-21 09:13:20,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-21 09:13:20,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-21 09:13:20,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-21 09:13:20,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-21 09:13:20,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-21 09:13:20,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-21 09:13:20,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-21 09:13:20,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-21 09:13:20,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-21 09:13:20,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-21 09:13:20,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-21 09:13:20,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-21 09:13:20,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-21 09:13:20,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-21 09:13:20,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-21 09:13:20,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-21 09:13:20,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-21 09:13:20,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-21 09:13:20,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-21 09:13:20,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-21 09:13:20,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-21 09:13:20,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-21 09:13:20,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-21 09:13:20,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-21 09:13:20,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-21 09:13:20,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-21 09:13:20,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-21 09:13:20,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-21 09:13:20,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-21 09:13:20,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-21 09:13:20,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-21 09:13:20,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-21 09:13:20,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-21 09:13:20,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-21 09:13:20,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-21 09:13:20,321 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 [2019-09-21 09:13:20,335 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-21 09:13:20,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-21 09:13:20,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-21 09:13:20,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-21 09:13:20,337 INFO L138 SettingsManager]: * Use SBE=true [2019-09-21 09:13:20,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-21 09:13:20,338 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-21 09:13:20,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-21 09:13:20,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-21 09:13:20,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-21 09:13:20,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-21 09:13:20,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-21 09:13:20,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-21 09:13:20,339 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-21 09:13:20,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-21 09:13:20,339 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-21 09:13:20,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-21 09:13:20,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-21 09:13:20,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-21 09:13:20,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-21 09:13:20,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-21 09:13:20,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-21 09:13:20,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-21 09:13:20,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-21 09:13:20,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-21 09:13:20,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-21 09:13:20,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-21 09:13:20,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-21 09:13:20,342 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_QUICK [2019-09-21 09:13:20,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-21 09:13:20,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-21 09:13:20,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-21 09:13:20,392 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-21 09:13:20,393 INFO L275 PluginConnector]: CDTParser initialized [2019-09-21 09:13:20,393 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product03.cil.c [2019-09-21 09:13:20,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2670cdfc/3249336664f94972ad834255cd854679/FLAGc90bba536 [2019-09-21 09:13:20,982 INFO L306 CDTParser]: Found 1 translation units. [2019-09-21 09:13:20,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product03.cil.c [2019-09-21 09:13:21,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2670cdfc/3249336664f94972ad834255cd854679/FLAGc90bba536 [2019-09-21 09:13:21,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2670cdfc/3249336664f94972ad834255cd854679 [2019-09-21 09:13:21,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-21 09:13:21,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-21 09:13:21,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-21 09:13:21,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-21 09:13:21,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-21 09:13:21,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 09:13:21" (1/1) ... [2019-09-21 09:13:21,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4ad246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:21, skipping insertion in model container [2019-09-21 09:13:21,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 09:13:21" (1/1) ... [2019-09-21 09:13:21,358 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-21 09:13:21,427 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-21 09:13:21,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-21 09:13:21,939 INFO L188 MainTranslator]: Completed pre-run [2019-09-21 09:13:22,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-21 09:13:22,071 INFO L192 MainTranslator]: Completed translation [2019-09-21 09:13:22,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:22 WrapperNode [2019-09-21 09:13:22,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-21 09:13:22,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-21 09:13:22,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-21 09:13:22,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-21 09:13:22,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:22" (1/1) ... [2019-09-21 09:13:22,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:22" (1/1) ... [2019-09-21 09:13:22,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:22" (1/1) ... [2019-09-21 09:13:22,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:22" (1/1) ... [2019-09-21 09:13:22,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:22" (1/1) ... [2019-09-21 09:13:22,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:22" (1/1) ... [2019-09-21 09:13:22,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:22" (1/1) ... [2019-09-21 09:13:22,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-21 09:13:22,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-21 09:13:22,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-21 09:13:22,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-21 09:13:22,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 09:13:22" (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 [2019-09-21 09:13:22,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-21 09:13:22,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-21 09:13:22,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-21 09:13:22,256 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-21 09:13:22,257 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-21 09:13:22,257 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-21 09:13:22,257 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-21 09:13:22,257 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-21 09:13:22,257 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-21 09:13:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-21 09:13:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-21 09:13:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-21 09:13:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-21 09:13:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-21 09:13:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-21 09:13:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-21 09:13:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-21 09:13:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-21 09:13:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-21 09:13:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-21 09:13:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-21 09:13:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-21 09:13:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-21 09:13:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-21 09:13:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-21 09:13:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-21 09:13:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-21 09:13:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-21 09:13:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-09-21 09:13:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-21 09:13:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-21 09:13:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-21 09:13:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-21 09:13:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-21 09:13:22,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-21 09:13:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-21 09:13:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-21 09:13:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-21 09:13:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-21 09:13:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-21 09:13:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-21 09:13:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-21 09:13:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-21 09:13:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-21 09:13:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-21 09:13:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-21 09:13:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-21 09:13:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-21 09:13:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-21 09:13:22,264 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-21 09:13:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-21 09:13:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-21 09:13:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-21 09:13:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-21 09:13:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-21 09:13:22,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-09-21 09:13:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-21 09:13:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-21 09:13:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-21 09:13:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-21 09:13:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-21 09:13:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-21 09:13:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-21 09:13:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-21 09:13:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-21 09:13:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-21 09:13:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-21 09:13:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-21 09:13:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-21 09:13:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-21 09:13:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-21 09:13:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-21 09:13:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-21 09:13:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-21 09:13:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-21 09:13:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-21 09:13:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-21 09:13:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-21 09:13:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-21 09:13:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-21 09:13:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-21 09:13:22,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-21 09:13:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-21 09:13:22,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-21 09:13:23,737 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-21 09:13:23,738 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-21 09:13:23,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 09:13:23 BoogieIcfgContainer [2019-09-21 09:13:23,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-21 09:13:23,741 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-21 09:13:23,741 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-21 09:13:23,741 INFO L275 PluginConnector]: Sifa initialized [2019-09-21 09:13:23,743 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 09:13:23" (1/1) ... [2019-09-21 09:13:23,743 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_QUICK ♦ Intern Fluid=SizeLimitFluid [2019-09-21 09:13:23,771 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-21 09:13:23,771 INFO L169 IcfgInterpreter]: Building call graph [2019-09-21 09:13:23,783 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-21 09:13:23,796 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-21 09:13:23,798 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-21 09:13:33,209 WARN L191 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-09-21 09:13:34,891 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-09-21 09:13:35,048 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-09-21 09:13:35,118 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 114 for LOIs [2019-09-21 09:13:35,167 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 114 for LOIs [2019-09-21 09:13:35,171 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 114 for LOIs [2019-09-21 09:13:36,291 INFO L199 IcfgInterpreter]: Interpreting procedure cleanup with input of size 1 for LOIs [2019-09-21 09:13:36,294 INFO L199 IcfgInterpreter]: Interpreting procedure timeShift with input of size 104 for LOIs [2019-09-21 09:13:36,348 INFO L199 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification1_spec__1 with input of size 105 for LOIs [2019-09-21 09:13:36,356 INFO L199 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 105 for LOIs [2019-09-21 09:13:36,387 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-21 09:13:36,388 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-21 09:13:36,389 INFO L193 IcfgInterpreter]: Reachable states at location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 254#(or (and (<= |#t~string58.offset| 0) (<= 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~string67.offset| 0) (<= |#t~string31.offset| 0) (<= ~head~0.offset 0) (<= 0 |#t~string64.offset|) (<= |#t~string55.offset| 0) (<= 0 |#t~string67.offset|) (<= 0 |#t~string11.offset|) (<= |#t~string56.offset| 0) (<= 0 |#t~string21.offset|) (<= |#t~string57.offset| 0) (<= ~pumpRunning~0 0) (<= 0 ~head~0.base) (<= |#NULL.offset| 0) (<= |#t~string7.offset| 0) (<= |#t~string13.offset| 0) (<= |#t~string15.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= |#t~string9.offset| 0) (<= |#t~string64.offset| 0) (<= |#t~string53.offset| 0) (<= |#t~string11.offset| 0) (<= |#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) (<= 0 |#t~string15.offset|) (<= 0 |#t~string54.offset|) (<= 0 |#t~string23.offset|) (<= 0 |#NULL.offset|) (<= ~cleanupTimeShifts~0 4) (<= 0 |#t~string29.offset|) (<= 0 |#t~string13.offset|) (<= |#t~string62.offset| 0) (<= 0 ~pumpRunning~0) (<= 0 ~systemActive~0) (<= ~systemActive~0 0) (<= |#NULL.base| 0) (<= |#t~string63.offset| 0) (<= 0 |#t~string66.offset|) (<= 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~string25.offset|) (<= |#t~string25.offset| 0) (<= 0 |#t~string58.offset|) (<= 0 |#t~string57.offset|)) (and (<= |#t~string58.offset| 0) (<= 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~string67.offset| 0) (<= |#t~string31.offset| 0) (<= ~systemActive~0 1) (<= ~head~0.offset 0) (<= 0 |#t~string64.offset|) (<= |#t~string55.offset| 0) (<= 0 |#t~string67.offset|) (<= 0 |#t~string11.offset|) (<= |#t~string56.offset| 0) (<= 0 |#t~string21.offset|) (<= |#t~string57.offset| 0) (<= ~pumpRunning~0 0) (<= 0 ~head~0.base) (<= |#NULL.offset| 0) (<= |#t~string7.offset| 0) (<= |#t~string13.offset| 0) (<= |#t~string15.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= |#t~string9.offset| 0) (<= |#t~string64.offset| 0) (<= |#t~string53.offset| 0) (<= |#t~string11.offset| 0) (<= |#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) (<= 0 |#t~string15.offset|) (<= 0 |#t~string54.offset|) (<= 0 |#t~string23.offset|) (<= 0 |#NULL.offset|) (<= ~cleanupTimeShifts~0 4) (<= 0 |#t~string29.offset|) (<= 0 |#t~string13.offset|) (<= |#t~string62.offset| 0) (<= 0 ~pumpRunning~0) (<= |#NULL.base| 0) (<= |#t~string63.offset| 0) (<= 0 |#t~string66.offset|) (<= 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~string25.offset|) (<= |#t~string25.offset| 0) (<= 0 |#t~string58.offset|) (<= 0 |#t~string57.offset|))) [2019-09-21 09:13:36,404 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-21 09:13:36,404 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-21 09:13:36,406 INFO L168 Benchmark]: Toolchain (without parser) took 15069.74 ms. Allocated memory was 137.9 MB in the beginning and 342.4 MB in the end (delta: 204.5 MB). Free memory was 83.7 MB in the beginning and 141.6 MB in the end (delta: -57.8 MB). Peak memory consumption was 146.6 MB. Max. memory is 7.1 GB. [2019-09-21 09:13:36,407 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-21 09:13:36,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.92 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 83.5 MB in the beginning and 165.0 MB in the end (delta: -81.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-09-21 09:13:36,409 INFO L168 Benchmark]: Boogie Preprocessor took 122.48 ms. Allocated memory is still 198.2 MB. Free memory was 165.0 MB in the beginning and 160.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-21 09:13:36,410 INFO L168 Benchmark]: RCFGBuilder took 1545.27 ms. Allocated memory was 198.2 MB in the beginning and 218.1 MB in the end (delta: 19.9 MB). Free memory was 160.5 MB in the beginning and 151.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 96.3 MB. Max. memory is 7.1 GB. [2019-09-21 09:13:36,411 INFO L168 Benchmark]: Sifa took 12663.86 ms. Allocated memory was 218.1 MB in the beginning and 342.4 MB in the end (delta: 124.3 MB). Free memory was 151.7 MB in the beginning and 141.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 134.4 MB. Max. memory is 7.1 GB. [2019-09-21 09:13:36,415 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 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.92 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 83.5 MB in the beginning and 165.0 MB in the end (delta: -81.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.48 ms. Allocated memory is still 198.2 MB. Free memory was 165.0 MB in the beginning and 160.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1545.27 ms. Allocated memory was 198.2 MB in the beginning and 218.1 MB in the end (delta: 19.9 MB). Free memory was 160.5 MB in the beginning and 151.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 96.3 MB. Max. memory is 7.1 GB. * Sifa took 12663.86 ms. Allocated memory was 218.1 MB in the beginning and 342.4 MB in the end (delta: 124.3 MB). Free memory was 151.7 MB in the beginning and 141.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 134.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.sifa: - StatisticsResult: Symbolic Interpretation with Fluid Abstractions OVERALL_TIME[ms]: 12619, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 167, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 114, TOOLS_POST_TIME[ms]: 11245, TOOLS_POST_CALL_APPLICATIONS: 42, TOOLS_POST_CALL_TIME[ms]: 113, TOOLS_POST_RETURN_APPLICATIONS: 35, TOOLS_POST_RETURN_TIME[ms]: 43, TOOLS_QUANTIFIERELIM_APPLICATIONS: 190, TOOLS_QUANTIFIERELIM_TIME[ms]: 11313, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 11173, FLUID_QUERY_TIME[ms]: 10, FLUID_QUERIES: 169, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 60, DOMAIN_JOIN_TIME[ms]: 959, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 5, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 41, DOMAIN_ISBOTTOM_TIME[ms]: 100, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 951, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 951, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 35, CALL_SUMMARIZER_CACHE_MISSES: 18, CALL_SUMMARIZER_OVERALL_TIME[ms]: 11296, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 11295, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 8, REGEX_TO_DAG_TIME[ms]: 5, DAG_COMPRESSION_TIME[ms]: 36, DAG_COMPRESSION_PROCESSED_NODES: 353, DAG_COMPRESSION_RETAINED_NODES: 169 - UnprovableResult [Line: 461]: 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 254#(or (and (<= |#t~string58.offset| 0) (<= 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~string67.offset| 0) (<= |#t~string31.offset| 0) (<= ~head~0.offset 0) (<= 0 |#t~string64.offset|) (<= |#t~string55.offset| 0) (<= 0 |#t~string67.offset|) (<= 0 |#t~string11.offset|) (<= |#t~string56.offset| 0) (<= 0 |#t~string21.offset|) (<= |#t~string57.offset| 0) (<= ~pumpRunning~0 0) (<= 0 ~head~0.base) (<= |#NULL.offset| 0) (<= |#t~string7.offset| 0) (<= |#t~string13.offset| 0) (<= |#t~string15.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= |#t~string9.offset| 0) (<= |#t~string64.offset| 0) (<= |#t~string53.offset| 0) (<= |#t~string11.offset| 0) (<= |#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) (<= 0 |#t~string15.offset|) (<= 0 |#t~string54.offset|) (<= 0 |#t~string23.offset|) (<= 0 |#NULL.offset|) (<= ~cleanupTimeShifts~0 4) (<= 0 |#t~string29.offset|) (<= 0 |#t~string13.offset|) (<= |#t~string62.offset| 0) (<= 0 ~pumpRunning~0) (<= 0 ~systemActive~0) (<= ~systemActive~0 0) (<= |#NULL.base| 0) (<= |#t~string63.offset| 0) (<= 0 |#t~string66.offset|) (<= 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~string25.offset|) (<= |#t~string25.offset| 0) (<= 0 |#t~string58.offset|) (<= 0 |#t~string57.offset|)) (and (<= |#t~string58.offset| 0) (<= 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~string67.offset| 0) (<= |#t~string31.offset| 0) (<= ~systemActive~0 1) (<= ~head~0.offset 0) (<= 0 |#t~string64.offset|) (<= |#t~string55.offset| 0) (<= 0 |#t~string67.offset|) (<= 0 |#t~string11.offset|) (<= |#t~string56.offset| 0) (<= 0 |#t~string21.offset|) (<= |#t~string57.offset| 0) (<= ~pumpRunning~0 0) (<= 0 ~head~0.base) (<= |#NULL.offset| 0) (<= |#t~string7.offset| 0) (<= |#t~string13.offset| 0) (<= |#t~string15.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= |#t~string9.offset| 0) (<= |#t~string64.offset| 0) (<= |#t~string53.offset| 0) (<= |#t~string11.offset| 0) (<= |#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) (<= 0 |#t~string15.offset|) (<= 0 |#t~string54.offset|) (<= 0 |#t~string23.offset|) (<= 0 |#NULL.offset|) (<= ~cleanupTimeShifts~0 4) (<= 0 |#t~string29.offset|) (<= 0 |#t~string13.offset|) (<= |#t~string62.offset| 0) (<= 0 ~pumpRunning~0) (<= |#NULL.base| 0) (<= |#t~string63.offset| 0) (<= 0 |#t~string66.offset|) (<= 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~string25.offset|) (<= |#t~string25.offset| 0) (<= 0 |#t~string58.offset|) (<= 0 |#t~string57.offset|))). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...