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_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-17 10:23:13,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-17 10:23:13,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-17 10:23:13,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-17 10:23:13,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-17 10:23:13,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-17 10:23:13,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-17 10:23:13,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-17 10:23:13,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-17 10:23:13,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-17 10:23:13,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-17 10:23:13,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-17 10:23:13,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-17 10:23:13,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-17 10:23:13,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-17 10:23:13,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-17 10:23:13,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-17 10:23:13,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-17 10:23:13,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-17 10:23:13,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-17 10:23:13,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-17 10:23:13,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-17 10:23:13,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-17 10:23:13,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-17 10:23:13,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-17 10:23:13,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-17 10:23:13,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-17 10:23:13,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-17 10:23:13,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-17 10:23:13,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-17 10:23:13,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-17 10:23:13,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-17 10:23:13,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-17 10:23:13,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-17 10:23:13,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-17 10:23:13,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-17 10:23:13,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-17 10:23:13,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-17 10:23:13,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-17 10:23:13,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-17 10:23:13,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-17 10:23:13,350 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 10:23:13,365 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-17 10:23:13,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-17 10:23:13,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-17 10:23:13,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-17 10:23:13,366 INFO L138 SettingsManager]: * Use SBE=true [2019-09-17 10:23:13,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-17 10:23:13,367 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-17 10:23:13,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-17 10:23:13,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-17 10:23:13,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-17 10:23:13,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-17 10:23:13,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-17 10:23:13,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-17 10:23:13,368 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-17 10:23:13,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-17 10:23:13,369 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-17 10:23:13,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-17 10:23:13,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-17 10:23:13,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-17 10:23:13,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-17 10:23:13,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-17 10:23:13,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-17 10:23:13,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-17 10:23:13,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-17 10:23:13,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-17 10:23:13,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-17 10:23:13,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-17 10:23:13,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-17 10:23:13,371 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 10:23:13,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-17 10:23:13,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-17 10:23:13,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-17 10:23:13,418 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-17 10:23:13,418 INFO L275 PluginConnector]: CDTParser initialized [2019-09-17 10:23:13,419 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-09-17 10:23:13,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404a6feec/22811bbee40f4332b878effa6c22c155/FLAGd4f4aed81 [2019-09-17 10:23:13,941 INFO L306 CDTParser]: Found 1 translation units. [2019-09-17 10:23:13,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-09-17 10:23:13,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404a6feec/22811bbee40f4332b878effa6c22c155/FLAGd4f4aed81 [2019-09-17 10:23:14,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404a6feec/22811bbee40f4332b878effa6c22c155 [2019-09-17 10:23:14,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-17 10:23:14,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-17 10:23:14,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-17 10:23:14,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-17 10:23:14,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-17 10:23:14,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 10:23:14" (1/1) ... [2019-09-17 10:23:14,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344f0ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14, skipping insertion in model container [2019-09-17 10:23:14,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 10:23:14" (1/1) ... [2019-09-17 10:23:14,330 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-17 10:23:14,391 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-17 10:23:14,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-17 10:23:14,819 INFO L188 MainTranslator]: Completed pre-run [2019-09-17 10:23:14,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-17 10:23:14,961 INFO L192 MainTranslator]: Completed translation [2019-09-17 10:23:14,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14 WrapperNode [2019-09-17 10:23:14,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-17 10:23:14,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-17 10:23:14,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-17 10:23:14,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-17 10:23:14,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14" (1/1) ... [2019-09-17 10:23:14,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14" (1/1) ... [2019-09-17 10:23:14,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14" (1/1) ... [2019-09-17 10:23:14,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14" (1/1) ... [2019-09-17 10:23:15,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14" (1/1) ... [2019-09-17 10:23:15,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14" (1/1) ... [2019-09-17 10:23:15,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14" (1/1) ... [2019-09-17 10:23:15,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-17 10:23:15,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-17 10:23:15,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-17 10:23:15,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-17 10:23:15,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 10:23:14" (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 10:23:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-17 10:23:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-17 10:23:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-17 10:23:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-17 10:23:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-17 10:23:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-17 10:23:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-17 10:23:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-17 10:23:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-17 10:23:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-17 10:23:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-17 10:23:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-17 10:23:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-17 10:23:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-17 10:23:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-17 10:23:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-17 10:23:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-17 10:23:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-17 10:23:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-17 10:23:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-17 10:23:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-17 10:23:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-17 10:23:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-17 10:23:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-17 10:23:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-17 10:23:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-17 10:23:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-17 10:23:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-17 10:23:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-17 10:23:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-17 10:23:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-17 10:23:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-17 10:23:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-17 10:23:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-17 10:23:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-17 10:23:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-17 10:23:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-17 10:23:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-17 10:23:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-17 10:23:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-17 10:23:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-17 10:23:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-17 10:23:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-17 10:23:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-17 10:23:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-17 10:23:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-17 10:23:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-17 10:23:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-17 10:23:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-17 10:23:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-17 10:23:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-17 10:23:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-17 10:23:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-17 10:23:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-17 10:23:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-17 10:23:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-17 10:23:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-17 10:23:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-17 10:23:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-17 10:23:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-17 10:23:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-17 10:23:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-17 10:23:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-17 10:23:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-17 10:23:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-17 10:23:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-17 10:23:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-17 10:23:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-17 10:23:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-17 10:23:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-17 10:23:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-17 10:23:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-17 10:23:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-17 10:23:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-17 10:23:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-17 10:23:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-17 10:23:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-17 10:23:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-17 10:23:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-17 10:23:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-17 10:23:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-17 10:23:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-17 10:23:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-17 10:23:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-17 10:23:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-17 10:23:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-17 10:23:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-17 10:23:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-17 10:23:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-17 10:23:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-17 10:23:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-17 10:23:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-17 10:23:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-17 10:23:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-17 10:23:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-17 10:23:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-17 10:23:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-17 10:23:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-17 10:23:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-17 10:23:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-17 10:23:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-17 10:23:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-17 10:23:16,712 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-17 10:23:16,712 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-17 10:23:16,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 10:23:16 BoogieIcfgContainer [2019-09-17 10:23:16,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-17 10:23:16,714 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-17 10:23:16,715 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-17 10:23:16,715 INFO L275 PluginConnector]: Sifa initialized [2019-09-17 10:23:16,716 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 10:23:16" (1/1) ... [2019-09-17 10:23:16,717 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 10:23:16,745 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-17 10:23:16,745 INFO L169 IcfgInterpreter]: Building call graph [2019-09-17 10:23:16,754 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-17 10:23:16,767 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-17 10:23:16,768 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-17 10:23:39,860 WARN L191 SmtUtils]: Spent 13.92 s on a formula simplification that was a NOOP. DAG size: 466 [2019-09-17 10:23:41,581 WARN L191 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-09-17 10:23:45,610 WARN L191 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 474 DAG size of output: 424 [2019-09-17 10:23:45,922 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-09-17 10:23:45,936 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 119 for LOIs [2019-09-17 10:23:45,992 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 119 for LOIs [2019-09-17 10:23:46,012 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 119 for LOIs [2019-09-17 10:23:46,483 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-09-17 10:23:46,907 WARN L191 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-09-17 10:23:47,280 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-09-17 10:23:48,428 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 150 [2019-09-17 10:23:48,792 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-09-17 10:23:49,391 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:23:49,778 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-09-17 10:23:50,125 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:23:50,474 WARN L191 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:23:51,499 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 145 [2019-09-17 10:23:51,831 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-09-17 10:23:52,201 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:23:52,590 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:23:52,939 WARN L191 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:23:53,280 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:23:54,301 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:23:54,639 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:23:54,989 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:23:55,356 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:23:55,694 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:23:56,730 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:23:57,083 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:23:57,415 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:23:57,783 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:23:58,137 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:23:58,486 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:23:58,826 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:23:59,818 WARN L191 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:00,153 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:00,533 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:00,890 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:01,257 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:02,260 WARN L191 SmtUtils]: Spent 996.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:02,598 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:02,934 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:03,281 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:03,675 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:04,027 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:04,373 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:04,727 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:05,096 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:05,444 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:05,793 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:06,141 WARN L191 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:06,490 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:06,831 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:07,220 WARN L191 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:07,550 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:07,884 WARN L191 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:08,229 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:08,574 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:08,918 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:09,291 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:09,630 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:09,971 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:10,317 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-17 10:24:11,348 WARN L191 SmtUtils]: Spent 994.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:12,337 WARN L191 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:13,328 WARN L191 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:14,318 WARN L191 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:15,301 WARN L191 SmtUtils]: Spent 980.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:16,275 WARN L191 SmtUtils]: Spent 972.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:17,268 WARN L191 SmtUtils]: Spent 991.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:18,258 WARN L191 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:19,236 WARN L191 SmtUtils]: Spent 975.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:20,218 WARN L191 SmtUtils]: Spent 980.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:20,590 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:20,927 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:21,258 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:21,600 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:21,938 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:22,278 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:22,623 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:22,960 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:23,294 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:23,634 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-17 10:24:24,625 WARN L191 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:25,597 WARN L191 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:26,579 WARN L191 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:27,559 WARN L191 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:28,542 WARN L191 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:29,525 WARN L191 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:30,514 WARN L191 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:31,500 WARN L191 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:32,478 WARN L191 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:33,462 WARN L191 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2019-09-17 10:24:33,839 WARN L191 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:34,217 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:34,564 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:35,559 WARN L191 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:35,893 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:36,227 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:37,092 WARN L191 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:24:38,016 WARN L191 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2019-09-17 10:24:38,381 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:38,736 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:39,082 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:40,092 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:40,426 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:40,759 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:41,609 WARN L191 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:24:42,634 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2019-09-17 10:24:42,990 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:43,346 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:43,689 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:44,689 WARN L191 SmtUtils]: Spent 993.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:45,023 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:45,363 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:46,207 WARN L191 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:24:46,519 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-17 10:24:47,483 WARN L191 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:24:47,846 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:48,209 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:48,551 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:49,564 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:49,894 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:50,223 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:51,070 WARN L191 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:24:51,986 WARN L191 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2019-09-17 10:24:52,360 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:52,709 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:53,049 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:54,054 WARN L191 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:54,386 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:54,717 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:55,568 WARN L191 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:24:56,482 WARN L191 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2019-09-17 10:24:56,835 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:57,195 WARN L191 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:57,543 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:24:58,554 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:24:58,894 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:24:59,327 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:00,166 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:25:01,076 WARN L191 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2019-09-17 10:25:01,431 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:01,784 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:02,129 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:03,149 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:25:03,482 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:03,821 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:04,664 WARN L191 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:25:05,583 WARN L191 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2019-09-17 10:25:05,897 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-17 10:25:06,309 WARN L191 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:06,646 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:06,995 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:08,001 WARN L191 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:25:08,337 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:08,674 WARN L191 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:09,526 WARN L191 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:25:10,440 WARN L191 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2019-09-17 10:25:10,751 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-17 10:25:11,767 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 144 [2019-09-17 10:25:12,116 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:12,468 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:12,814 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:13,820 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:25:14,163 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:14,497 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:15,352 WARN L191 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:25:15,670 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-17 10:25:16,635 WARN L191 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-09-17 10:25:16,967 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:17,308 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:17,660 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:18,005 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:19,012 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:25:19,355 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:19,692 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:20,536 WARN L191 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 118 [2019-09-17 10:25:20,884 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:21,227 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-17 10:25:22,219 WARN L191 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-17 10:25:22,554 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-17 10:25:22,559 INFO L199 IcfgInterpreter]: Interpreting procedure cleanup with input of size 1 for LOIs [2019-09-17 10:25:22,560 INFO L199 IcfgInterpreter]: Interpreting procedure timeShift with input of size 108 for LOIs [2019-09-17 10:25:23,226 WARN L191 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2019-09-17 10:25:23,880 WARN L191 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2019-09-17 10:25:23,881 INFO L199 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification2_spec__2 with input of size 102 for LOIs [2019-09-17 10:25:23,887 INFO L199 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 102 for LOIs [2019-09-17 10:25:24,101 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-17 10:25:24,102 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-17 10:25:24,102 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-17 10:25:24,105 INFO L193 IcfgInterpreter]: Reachable states at location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 867#(and (<= |#t~string58.offset| 0) (<= 0 |#t~string62.offset|) (<= 0 |#t~string35.offset|) (<= ~head~0.base 0) (<= 0 ~head~0.offset) (<= 0 |#NULL.base|) (<= 0 |#t~string70.offset|) (<= ~systemActive~0 1) (<= ~head~0.offset 0) (<= 0 |#t~string64.offset|) (<= |#t~string34.offset| 0) (<= 0 |#t~string46.offset|) (<= 0 |#t~string60.offset|) (<= |#t~string70.offset| 0) (<= |#t~string56.offset| 0) (<= |#t~string39.offset| 0) (<= |#t~string1.offset| 0) (<= 0 |#t~string1.offset|) (<= 0 ~head~0.base) (<= |#NULL.offset| 0) (<= 0 |#t~string45.offset|) (<= |#t~string7.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= 0 |#t~string39.offset|) (<= 0 |#t~string44.offset|) (<= |#t~string9.offset| 0) (<= |#t~string64.offset| 0) (<= |#t~string44.offset| 0) (<= |#t~string35.offset| 0) (<= |#t~string45.offset| 0) (<= |#t~string47.offset| 0) (<= 0 |#t~string36.offset|) (<= 0 |#t~string43.offset|) (<= |#t~string36.offset| 0) (<= 0 |#t~string56.offset|) (<= |#t~string66.offset| 0) (<= 0 |#t~string7.offset|) (<= 0 |#t~string9.offset|) (<= 0 |#t~string48.offset|) (<= 0 |#NULL.offset|) (<= |#t~string60.offset| 0) (<= |#t~string37.offset| 0) (<= ~cleanupTimeShifts~0 4) (<= 0 |#t~string5.offset|) (<= |#t~string62.offset| 0) (<= |#t~string43.offset| 0) (<= |#t~string3.offset| 0) (<= 0 |#t~string47.offset|) (<= 0 |#t~string38.offset|) (<= |#t~string5.offset| 0) (<= 0 |#t~string37.offset|) (<= |#NULL.base| 0) (<= 0 |#t~string66.offset|) (<= |#t~string46.offset| 0) (<= |#t~string48.offset| 0) (<= 4 ~cleanupTimeShifts~0) (<= 0 |#t~string34.offset|) (<= |#t~string38.offset| 0) (<= |#t~string68.offset| 0) (<= 0 |#t~string3.offset|) (<= 0 ~methAndRunningLastTime~0) (<= 0 |#t~string58.offset|) (<= 0 |#t~string68.offset|)) [2019-09-17 10:25:24,115 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-17 10:25:24,115 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-17 10:25:24,117 INFO L168 Benchmark]: Toolchain (without parser) took 129804.76 ms. Allocated memory was 132.6 MB in the beginning and 215.5 MB in the end (delta: 82.8 MB). Free memory was 86.9 MB in the beginning and 63.9 MB in the end (delta: 22.9 MB). Peak memory consumption was 105.8 MB. Max. memory is 7.1 GB. [2019-09-17 10:25:24,117 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 106.7 MB in the beginning and 106.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-17 10:25:24,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.00 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.6 MB in the beginning and 162.2 MB in the end (delta: -75.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-09-17 10:25:24,118 INFO L168 Benchmark]: Boogie Preprocessor took 82.48 ms. Allocated memory is still 199.2 MB. Free memory was 162.2 MB in the beginning and 158.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2019-09-17 10:25:24,119 INFO L168 Benchmark]: RCFGBuilder took 1669.31 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 157.8 MB in the beginning and 137.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2019-09-17 10:25:24,120 INFO L168 Benchmark]: Sifa took 127400.90 ms. Allocated memory was 222.8 MB in the beginning and 215.5 MB in the end (delta: -7.3 MB). Free memory was 137.5 MB in the beginning and 63.9 MB in the end (delta: 73.6 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2019-09-17 10:25:24,122 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 132.6 MB. Free memory was 106.7 MB in the beginning and 106.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.00 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.6 MB in the beginning and 162.2 MB in the end (delta: -75.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.48 ms. Allocated memory is still 199.2 MB. Free memory was 162.2 MB in the beginning and 158.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1669.31 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 157.8 MB in the beginning and 137.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. * Sifa took 127400.90 ms. Allocated memory was 222.8 MB in the beginning and 215.5 MB in the end (delta: -7.3 MB). Free memory was 137.5 MB in the beginning and 63.9 MB in the end (delta: 73.6 MB). Peak memory consumption was 66.3 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]: 127360, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 536, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 380, TOOLS_POST_TIME[ms]: 28952, TOOLS_POST_CALL_APPLICATIONS: 132, TOOLS_POST_CALL_TIME[ms]: 247, TOOLS_POST_RETURN_APPLICATIONS: 125, TOOLS_POST_RETURN_TIME[ms]: 122, TOOLS_QUANTIFIERELIM_APPLICATIONS: 636, TOOLS_QUANTIFIERELIM_TIME[ms]: 29126, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 28773, FLUID_QUERY_TIME[ms]: 21, FLUID_QUERIES: 552, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 226, DOMAIN_JOIN_TIME[ms]: 97339, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 6, DOMAIN_ISSUBSETEQ_APPLICATIONS: 16, DOMAIN_ISSUBSETEQ_TIME[ms]: 41, DOMAIN_ISBOTTOM_APPLICATIONS: 118, DOMAIN_ISBOTTOM_TIME[ms]: 432, LOOP_SUMMARIZER_APPLICATIONS: 14, LOOP_SUMMARIZER_CACHE_MISSES: 14, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 44736, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 44735, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 16, CALL_SUMMARIZER_APPLICATIONS: 125, CALL_SUMMARIZER_CACHE_MISSES: 29, CALL_SUMMARIZER_OVERALL_TIME[ms]: 29485, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 29484, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 7, REGEX_TO_DAG_TIME[ms]: 8, DAG_COMPRESSION_TIME[ms]: 60, DAG_COMPRESSION_PROCESSED_NODES: 1593, DAG_COMPRESSION_RETAINED_NODES: 366 - UnprovableResult [Line: 155]: 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 867#(and (<= |#t~string58.offset| 0) (<= 0 |#t~string62.offset|) (<= 0 |#t~string35.offset|) (<= ~head~0.base 0) (<= 0 ~head~0.offset) (<= 0 |#NULL.base|) (<= 0 |#t~string70.offset|) (<= ~systemActive~0 1) (<= ~head~0.offset 0) (<= 0 |#t~string64.offset|) (<= |#t~string34.offset| 0) (<= 0 |#t~string46.offset|) (<= 0 |#t~string60.offset|) (<= |#t~string70.offset| 0) (<= |#t~string56.offset| 0) (<= |#t~string39.offset| 0) (<= |#t~string1.offset| 0) (<= 0 |#t~string1.offset|) (<= 0 ~head~0.base) (<= |#NULL.offset| 0) (<= 0 |#t~string45.offset|) (<= |#t~string7.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= 0 |#t~string39.offset|) (<= 0 |#t~string44.offset|) (<= |#t~string9.offset| 0) (<= |#t~string64.offset| 0) (<= |#t~string44.offset| 0) (<= |#t~string35.offset| 0) (<= |#t~string45.offset| 0) (<= |#t~string47.offset| 0) (<= 0 |#t~string36.offset|) (<= 0 |#t~string43.offset|) (<= |#t~string36.offset| 0) (<= 0 |#t~string56.offset|) (<= |#t~string66.offset| 0) (<= 0 |#t~string7.offset|) (<= 0 |#t~string9.offset|) (<= 0 |#t~string48.offset|) (<= 0 |#NULL.offset|) (<= |#t~string60.offset| 0) (<= |#t~string37.offset| 0) (<= ~cleanupTimeShifts~0 4) (<= 0 |#t~string5.offset|) (<= |#t~string62.offset| 0) (<= |#t~string43.offset| 0) (<= |#t~string3.offset| 0) (<= 0 |#t~string47.offset|) (<= 0 |#t~string38.offset|) (<= |#t~string5.offset| 0) (<= 0 |#t~string37.offset|) (<= |#NULL.base| 0) (<= 0 |#t~string66.offset|) (<= |#t~string46.offset| 0) (<= |#t~string48.offset| 0) (<= 4 ~cleanupTimeShifts~0) (<= 0 |#t~string34.offset|) (<= |#t~string38.offset| 0) (<= |#t~string68.offset| 0) (<= 0 |#t~string3.offset|) (<= 0 ~methAndRunningLastTime~0) (<= 0 |#t~string58.offset|) (<= 0 |#t~string68.offset|)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...