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 ExplicitValueDomain --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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 19:09:27,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 19:09:27,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 19:09:27,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 19:09:27,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 19:09:27,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 19:09:27,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 19:09:27,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 19:09:27,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 19:09:27,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 19:09:27,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 19:09:27,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 19:09:27,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 19:09:27,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 19:09:27,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 19:09:27,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 19:09:27,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 19:09:27,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 19:09:27,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 19:09:27,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 19:09:27,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 19:09:27,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 19:09:27,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 19:09:27,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 19:09:27,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 19:09:27,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 19:09:27,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 19:09:27,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 19:09:27,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 19:09:27,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 19:09:27,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 19:09:27,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 19:09:27,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 19:09:27,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 19:09:27,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 19:09:27,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 19:09:27,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 19:09:27,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 19:09:27,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 19:09:27,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 19:09:27,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 19:09:27,304 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 [2019-09-16 19:09:27,328 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 19:09:27,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 19:09:27,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 19:09:27,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 19:09:27,331 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 19:09:27,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 19:09:27,331 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 19:09:27,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 19:09:27,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 19:09:27,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 19:09:27,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 19:09:27,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 19:09:27,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 19:09:27,333 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 19:09:27,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 19:09:27,334 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 19:09:27,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 19:09:27,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 19:09:27,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 19:09:27,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 19:09:27,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 19:09:27,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 19:09:27,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 19:09:27,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 19:09:27,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 19:09:27,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 19:09:27,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 19:09:27,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 19:09:27,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> ExplicitValueDomain 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 [2019-09-16 19:09:27,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 19:09:27,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 19:09:27,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 19:09:27,417 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 19:09:27,418 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 19:09:27,418 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2019-09-16 19:09:27,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17becd015/e9f9eec6fdbc4a82b1c971f613fa6db7/FLAGfea24cbca [2019-09-16 19:09:27,994 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 19:09:27,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2019-09-16 19:09:28,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17becd015/e9f9eec6fdbc4a82b1c971f613fa6db7/FLAGfea24cbca [2019-09-16 19:09:28,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17becd015/e9f9eec6fdbc4a82b1c971f613fa6db7 [2019-09-16 19:09:28,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 19:09:28,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 19:09:28,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 19:09:28,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 19:09:28,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 19:09:28,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 07:09:28" (1/1) ... [2019-09-16 19:09:28,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2145c95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28, skipping insertion in model container [2019-09-16 19:09:28,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 07:09:28" (1/1) ... [2019-09-16 19:09:28,335 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 19:09:28,382 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 19:09:28,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 19:09:28,835 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 19:09:28,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 19:09:28,978 INFO L192 MainTranslator]: Completed translation [2019-09-16 19:09:28,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28 WrapperNode [2019-09-16 19:09:28,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 19:09:28,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 19:09:28,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 19:09:28,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 19:09:28,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28" (1/1) ... [2019-09-16 19:09:28,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28" (1/1) ... [2019-09-16 19:09:29,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28" (1/1) ... [2019-09-16 19:09:29,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28" (1/1) ... [2019-09-16 19:09:29,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28" (1/1) ... [2019-09-16 19:09:29,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28" (1/1) ... [2019-09-16 19:09:29,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28" (1/1) ... [2019-09-16 19:09:29,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 19:09:29,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 19:09:29,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 19:09:29,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 19:09:29,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 07:09:28" (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 [2019-09-16 19:09:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 19:09:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 19:09:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 19:09:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 19:09:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 19:09:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 19:09:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 19:09:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 19:09:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 19:09:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 19:09:29,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 19:09:29,175 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 19:09:29,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 19:09:29,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 19:09:29,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-16 19:09:29,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 19:09:29,176 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 19:09:29,176 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 19:09:29,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 19:09:29,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 19:09:29,176 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 19:09:29,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 19:09:29,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 19:09:29,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-16 19:09:29,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-16 19:09:29,177 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 19:09:29,177 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 19:09:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 19:09:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 19:09:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 19:09:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 19:09:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 19:09:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 19:09:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 19:09:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 19:09:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 19:09:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 19:09:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 19:09:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 19:09:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 19:09:29,180 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 19:09:29,180 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 19:09:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 19:09:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 19:09:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 19:09:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 19:09:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 19:09:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 19:09:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 19:09:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 19:09:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 19:09:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 19:09:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 19:09:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 19:09:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 19:09:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 19:09:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 19:09:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 19:09:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 19:09:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 19:09:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 19:09:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 19:09:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 19:09:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 19:09:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 19:09:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 19:09:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 19:09:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 19:09:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 19:09:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 19:09:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 19:09:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 19:09:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 19:09:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 19:09:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 19:09:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 19:09:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 19:09:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-16 19:09:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 19:09:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 19:09:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 19:09:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 19:09:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 19:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-16 19:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 19:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-16 19:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 19:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 19:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 19:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 19:09:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 19:09:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 19:09:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 19:09:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 19:09:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 19:09:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 19:09:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 19:09:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 19:09:30,795 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 19:09:30,795 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 19:09:30,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 07:09:30 BoogieIcfgContainer [2019-09-16 19:09:30,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 19:09:30,797 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-16 19:09:30,797 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-16 19:09:30,798 INFO L275 PluginConnector]: Sifa initialized [2019-09-16 19:09:30,799 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 07:09:30" (1/1) ... [2019-09-16 19:09:30,800 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=ExplicitValueDomain ♦ 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 [2019-09-16 19:09:30,835 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-16 19:09:30,835 INFO L169 IcfgInterpreter]: Building call graph [2019-09-16 19:09:30,844 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-16 19:09:30,857 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-16 19:09:30,862 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-16 19:09:52,888 WARN L191 SmtUtils]: Spent 13.19 s on a formula simplification that was a NOOP. DAG size: 466 [2019-09-16 19:09:54,555 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-09-16 19:09:58,405 WARN L191 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 474 DAG size of output: 424 [2019-09-16 19:10:00,153 WARN L191 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 424 [2019-09-16 19:10:01,894 WARN L191 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 424 [2019-09-16 19:10:01,909 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 432 for LOIs [2019-09-16 19:10:01,975 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 432 for LOIs [2019-09-16 19:10:01,992 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 432 for LOIs [2019-09-16 19:10:13,920 WARN L191 SmtUtils]: Spent 11.73 s on a formula simplification. DAG size of input: 464 DAG size of output: 463 [2019-09-16 19:10:19,561 WARN L191 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 463 [2019-09-16 19:10:31,353 WARN L191 SmtUtils]: Spent 11.79 s on a formula simplification. DAG size of input: 464 DAG size of output: 463 [2019-09-16 19:10:37,199 WARN L191 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 463 [2019-09-16 19:10:52,725 WARN L191 SmtUtils]: Spent 15.46 s on a formula simplification. DAG size of input: 469 DAG size of output: 466 [2019-09-16 19:10:52,842 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-09-16 19:11:08,277 WARN L191 SmtUtils]: Spent 15.15 s on a formula simplification. DAG size of input: 469 DAG size of output: 466 [2019-09-16 19:11:08,382 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-09-16 19:11:08,925 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 477 DAG size of output: 76 [2019-09-16 19:11:09,261 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 477 DAG size of output: 76 [2019-09-16 19:11:10,982 WARN L191 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2019-09-16 19:11:11,096 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-09-16 19:11:11,752 WARN L191 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2019-09-16 19:11:11,864 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-09-16 19:11:12,536 WARN L191 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2019-09-16 19:11:12,852 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-09-16 19:11:13,597 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 106 [2019-09-16 19:11:13,949 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-09-16 19:11:14,715 WARN L191 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2019-09-16 19:11:14,824 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-09-16 19:11:15,483 WARN L191 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2019-09-16 19:11:15,594 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-09-16 19:11:16,258 WARN L191 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2019-09-16 19:11:16,586 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-09-16 19:11:17,295 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 106 [2019-09-16 19:11:17,647 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-09-16 19:11:17,651 INFO L199 IcfgInterpreter]: Interpreting procedure cleanup with input of size 1 for LOIs [2019-09-16 19:11:17,654 INFO L199 IcfgInterpreter]: Interpreting procedure timeShift with input of size 75 for LOIs [2019-09-16 19:11:18,147 WARN L191 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2019-09-16 19:11:18,390 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-09-16 19:11:18,901 WARN L191 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-16 19:11:19,136 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2019-09-16 19:11:19,138 INFO L199 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification2_spec__2 with input of size 69 for LOIs [2019-09-16 19:11:19,143 INFO L199 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 83 for LOIs [2019-09-16 19:11:19,259 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-09-16 19:11:19,363 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-09-16 19:11:19,364 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-16 19:11:19,364 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-16 19:11:19,367 INFO L193 IcfgInterpreter]: Reachable states at location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 389#(and (not (= 0 ~methAndRunningLastTime~0)) (= |#t~string26.offset| 0) (= |#t~string50.offset| 0) (= |#t~string44.offset| 0) (= |#t~string56.offset| 0) (= |#t~string34.offset| 0) (= |#t~string67.offset| 0) (= |#t~string27.offset| 0) (= |#t~string54.offset| 0) (= ~systemActive~0 1) (= |#t~string35.offset| 0) (= |#t~string58.offset| 0) (not (= ~pumpRunning~0 0)) (= ~head~0.base 0) (= |#t~string46.offset| 0) (not (= 0 ~methaneLevelCritical~0)) (= |#t~string32.offset| 0) (= ~cleanupTimeShifts~0 4) (= |#t~string73.offset| 0) (<= ~methaneLevelCritical~0 2147483647) (= |#t~string52.offset| 0) (= |#NULL.base| 0) (= |#t~string33.offset| 0) (= |#t~string71.offset| 0) (= |#t~string65.offset| 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#t~string25.offset| 0) (= |#t~string22.offset| 0) (= |#t~string48.offset| 0) (= ~head~0.offset 0) (<= ~pumpRunning~0 2147483647) (= |#t~string31.offset| 0) (= |#t~string36.offset| 0) (= |#t~string69.offset| 0) (= |#t~string24.offset| 0) (= |#NULL.offset| 0) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (= |#t~string23.offset| 0)) [2019-09-16 19:11:19,378 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-16 19:11:19,378 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-16 19:11:19,380 INFO L168 Benchmark]: Toolchain (without parser) took 111062.26 ms. Allocated memory was 132.6 MB in the beginning and 244.8 MB in the end (delta: 112.2 MB). Free memory was 86.0 MB in the beginning and 114.2 MB in the end (delta: -28.3 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2019-09-16 19:11:19,383 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 19:11:19,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.29 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 85.8 MB in the beginning and 162.0 MB in the end (delta: -76.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2019-09-16 19:11:19,384 INFO L168 Benchmark]: Boogie Preprocessor took 137.90 ms. Allocated memory is still 199.2 MB. Free memory was 162.0 MB in the beginning and 157.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-16 19:11:19,385 INFO L168 Benchmark]: RCFGBuilder took 1678.83 ms. Allocated memory was 199.2 MB in the beginning and 223.3 MB in the end (delta: 24.1 MB). Free memory was 157.6 MB in the beginning and 136.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. [2019-09-16 19:11:19,386 INFO L168 Benchmark]: Sifa took 108580.98 ms. Allocated memory was 223.3 MB in the beginning and 244.8 MB in the end (delta: 21.5 MB). Free memory was 136.0 MB in the beginning and 114.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2019-09-16 19:11:19,390 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.29 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 85.8 MB in the beginning and 162.0 MB in the end (delta: -76.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.90 ms. Allocated memory is still 199.2 MB. Free memory was 162.0 MB in the beginning and 157.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1678.83 ms. Allocated memory was 199.2 MB in the beginning and 223.3 MB in the end (delta: 24.1 MB). Free memory was 157.6 MB in the beginning and 136.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. * Sifa took 108580.98 ms. Allocated memory was 223.3 MB in the beginning and 244.8 MB in the end (delta: 21.5 MB). Free memory was 136.0 MB in the beginning and 114.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 43.2 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]: 108532, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 200, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 131, TOOLS_POST_TIME[ms]: 27541, TOOLS_POST_CALL_APPLICATIONS: 59, TOOLS_POST_CALL_TIME[ms]: 111, TOOLS_POST_RETURN_APPLICATIONS: 52, TOOLS_POST_RETURN_TIME[ms]: 57, TOOLS_QUANTIFIERELIM_APPLICATIONS: 241, TOOLS_QUANTIFIERELIM_TIME[ms]: 27626, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 27473, FLUID_QUERY_TIME[ms]: 10, FLUID_QUERIES: 202, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 65, DOMAIN_JOIN_TIME[ms]: 80417, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 5, DOMAIN_ISBOTTOM_APPLICATIONS: 36, DOMAIN_ISBOTTOM_TIME[ms]: 253, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 8193, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 8192, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 52, CALL_SUMMARIZER_CACHE_MISSES: 28, CALL_SUMMARIZER_OVERALL_TIME[ms]: 32047, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 32046, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 6, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 35, DAG_COMPRESSION_PROCESSED_NODES: 457, DAG_COMPRESSION_RETAINED_NODES: 218 - UnprovableResult [Line: 44]: 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 389#(and (not (= 0 ~methAndRunningLastTime~0)) (= |#t~string26.offset| 0) (= |#t~string50.offset| 0) (= |#t~string44.offset| 0) (= |#t~string56.offset| 0) (= |#t~string34.offset| 0) (= |#t~string67.offset| 0) (= |#t~string27.offset| 0) (= |#t~string54.offset| 0) (= ~systemActive~0 1) (= |#t~string35.offset| 0) (= |#t~string58.offset| 0) (not (= ~pumpRunning~0 0)) (= ~head~0.base 0) (= |#t~string46.offset| 0) (not (= 0 ~methaneLevelCritical~0)) (= |#t~string32.offset| 0) (= ~cleanupTimeShifts~0 4) (= |#t~string73.offset| 0) (<= ~methaneLevelCritical~0 2147483647) (= |#t~string52.offset| 0) (= |#NULL.base| 0) (= |#t~string33.offset| 0) (= |#t~string71.offset| 0) (= |#t~string65.offset| 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#t~string25.offset| 0) (= |#t~string22.offset| 0) (= |#t~string48.offset| 0) (= ~head~0.offset 0) (<= ~pumpRunning~0 2147483647) (= |#t~string31.offset| 0) (= |#t~string36.offset| 0) (= |#t~string69.offset| 0) (= |#t~string24.offset| 0) (= |#NULL.offset| 0) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (= |#t~string23.offset| 0)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...