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.logsizewrapperfluid.intern.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK --sifa.max.parallel.explicit.values 4 --sifa.sizelimitfluid.max.disjunctions 16 -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-ba7495b [2019-09-25 17:51:11,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-25 17:51:11,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-25 17:51:11,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-25 17:51:11,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-25 17:51:11,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-25 17:51:11,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-25 17:51:11,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-25 17:51:11,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-25 17:51:11,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-25 17:51:11,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-25 17:51:11,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-25 17:51:11,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-25 17:51:11,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-25 17:51:11,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-25 17:51:11,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-25 17:51:11,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-25 17:51:11,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-25 17:51:11,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-25 17:51:11,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-25 17:51:11,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-25 17:51:11,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-25 17:51:11,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-25 17:51:11,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-25 17:51:11,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-25 17:51:11,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-25 17:51:11,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-25 17:51:11,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-25 17:51:11,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-25 17:51:11,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-25 17:51:11,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-25 17:51:11,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-25 17:51:11,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-25 17:51:11,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-25 17:51:11,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-25 17:51:11,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-25 17:51:11,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-25 17:51:11,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-25 17:51:11,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-25 17:51:11,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-25 17:51:11,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-25 17:51:11,308 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 [2019-09-25 17:51:11,333 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-25 17:51:11,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-25 17:51:11,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-25 17:51:11,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-25 17:51:11,336 INFO L138 SettingsManager]: * Use SBE=true [2019-09-25 17:51:11,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-25 17:51:11,336 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-25 17:51:11,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-25 17:51:11,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-25 17:51:11,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-25 17:51:11,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-25 17:51:11,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-25 17:51:11,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-25 17:51:11,337 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-25 17:51:11,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-25 17:51:11,338 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-25 17:51:11,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-25 17:51:11,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-25 17:51:11,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-25 17:51:11,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-25 17:51:11,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-25 17:51:11,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-25 17:51:11,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-25 17:51:11,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-25 17:51:11,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-25 17:51:11,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-25 17:51:11,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-25 17:51:11,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-25 17:51:11,342 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: LogSizeWrapperFluid Intern Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Max. Parallel Explicit Values -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: SizeLimitFluid Max. Disjunctions -> 16 [2019-09-25 17:51:11,390 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-25 17:51:11,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-25 17:51:11,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-25 17:51:11,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-25 17:51:11,412 INFO L275 PluginConnector]: CDTParser initialized [2019-09-25 17:51:11,413 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product30.cil.c [2019-09-25 17:51:11,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6cc0418a/55d7a5ae26104893b6af3a79a7930a0e/FLAGfb350e45f [2019-09-25 17:51:11,993 INFO L306 CDTParser]: Found 1 translation units. [2019-09-25 17:51:11,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product30.cil.c [2019-09-25 17:51:12,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6cc0418a/55d7a5ae26104893b6af3a79a7930a0e/FLAGfb350e45f [2019-09-25 17:51:12,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6cc0418a/55d7a5ae26104893b6af3a79a7930a0e [2019-09-25 17:51:12,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-25 17:51:12,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-25 17:51:12,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-25 17:51:12,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-25 17:51:12,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-25 17:51:12,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:51:12" (1/1) ... [2019-09-25 17:51:12,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3729bd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12, skipping insertion in model container [2019-09-25 17:51:12,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:51:12" (1/1) ... [2019-09-25 17:51:12,307 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-25 17:51:12,348 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-25 17:51:12,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-25 17:51:12,783 INFO L188 MainTranslator]: Completed pre-run [2019-09-25 17:51:12,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-25 17:51:12,936 INFO L192 MainTranslator]: Completed translation [2019-09-25 17:51:12,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12 WrapperNode [2019-09-25 17:51:12,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-25 17:51:12,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-25 17:51:12,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-25 17:51:12,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-25 17:51:12,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12" (1/1) ... [2019-09-25 17:51:12,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12" (1/1) ... [2019-09-25 17:51:12,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12" (1/1) ... [2019-09-25 17:51:12,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12" (1/1) ... [2019-09-25 17:51:12,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12" (1/1) ... [2019-09-25 17:51:13,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12" (1/1) ... [2019-09-25 17:51:13,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12" (1/1) ... [2019-09-25 17:51:13,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-25 17:51:13,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-25 17:51:13,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-25 17:51:13,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-25 17:51:13,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:51:12" (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 [2019-09-25 17:51:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-25 17:51:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-25 17:51:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-25 17:51:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-25 17:51:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-25 17:51:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-25 17:51:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-25 17:51:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-25 17:51:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-25 17:51:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-25 17:51:13,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-09-25 17:51:13,083 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-25 17:51:13,083 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-25 17:51:13,083 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-25 17:51:13,083 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-25 17:51:13,083 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-25 17:51:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-25 17:51:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-25 17:51:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-25 17:51:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-25 17:51:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-25 17:51:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-25 17:51:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-25 17:51:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-25 17:51:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-25 17:51:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-25 17:51:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-25 17:51:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-25 17:51:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-25 17:51:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-25 17:51:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-25 17:51:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-25 17:51:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-25 17:51:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-25 17:51:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-25 17:51:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-25 17:51:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-25 17:51:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-25 17:51:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-25 17:51:13,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-25 17:51:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-25 17:51:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-25 17:51:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-25 17:51:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-25 17:51:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-25 17:51:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-25 17:51:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-25 17:51:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-25 17:51:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-25 17:51:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-25 17:51:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-25 17:51:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-25 17:51:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-25 17:51:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-09-25 17:51:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-25 17:51:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-25 17:51:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-25 17:51:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-25 17:51:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-25 17:51:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-25 17:51:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-25 17:51:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-25 17:51:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-25 17:51:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-25 17:51:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-25 17:51:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-25 17:51:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-25 17:51:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-25 17:51:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-25 17:51:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-25 17:51:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-25 17:51:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-25 17:51:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-25 17:51:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-25 17:51:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-25 17:51:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-25 17:51:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-25 17:51:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-25 17:51:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-25 17:51:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-25 17:51:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-25 17:51:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-25 17:51:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-25 17:51:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-25 17:51:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-25 17:51:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-25 17:51:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-25 17:51:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-25 17:51:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-25 17:51:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-25 17:51:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-25 17:51:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-25 17:51:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-25 17:51:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-25 17:51:14,690 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-25 17:51:14,690 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-25 17:51:14,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:51:14 BoogieIcfgContainer [2019-09-25 17:51:14,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-25 17:51:14,693 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-25 17:51:14,694 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-25 17:51:14,694 INFO L275 PluginConnector]: Sifa initialized [2019-09-25 17:51:14,696 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:51:14" (1/1) ... [2019-09-25 17:51:14,697 INFO L79 SifaObserver]: LogSizeWrapperFluid Intern Fluid=SizeLimitFluid ♦ Abstract Domain=ExplicitValueDomain ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=4 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ CompoundDomain Intern Domains=ExplicitValueDomain;IntervalDomain ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ SizeLimitFluid Max. Disjunctions=16 ♦ Simplification Technique=SIMPLIFY_QUICK ♦ SizeLimitFluid Max. DAG Size=-1 [2019-09-25 17:51:14,737 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-25 17:51:14,737 INFO L169 IcfgInterpreter]: Building call graph [2019-09-25 17:51:14,751 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-25 17:51:14,767 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-25 17:51:14,769 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-25 17:51:24,870 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-09-25 17:51:26,643 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-09-25 17:51:26,769 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-09-25 17:51:26,930 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-09-25 17:51:27,049 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-09-25 17:51:27,064 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 480 for LOIs [2019-09-25 17:51:27,109 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 480 for LOIs [2019-09-25 17:51:27,115 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 480 for LOIs [2019-09-25 17:51:27,262 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-09-25 17:51:27,392 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-09-25 17:51:27,985 WARN L191 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 514 [2019-09-25 17:51:28,447 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 514 [2019-09-25 17:51:28,656 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 521 [2019-09-25 17:51:28,951 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 521 [2019-09-25 17:51:29,075 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 521 [2019-09-25 17:51:29,341 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 521 [2019-09-25 17:51:29,644 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 528 [2019-09-25 17:51:29,947 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 528 [2019-09-25 17:51:30,157 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 521 [2019-09-25 17:51:30,361 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 521 [2019-09-25 17:51:30,638 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 521 [2019-09-25 17:51:30,897 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 528 [2019-09-25 17:51:31,167 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 528 [2019-09-25 17:51:31,359 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 518 [2019-09-25 17:51:31,744 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 524 [2019-09-25 17:51:31,928 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 524 [2019-09-25 17:51:32,113 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 524 [2019-09-25 17:51:32,293 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 524 [2019-09-25 17:51:33,064 WARN L191 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 539 DAG size of output: 539 [2019-09-25 17:51:33,464 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 539 DAG size of output: 539 [2019-09-25 17:51:33,779 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 527 DAG size of output: 527 [2019-09-25 17:51:33,981 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 527 DAG size of output: 527 [2019-09-25 17:51:34,205 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 528 DAG size of output: 528 [2019-09-25 17:51:34,392 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 528 DAG size of output: 528 [2019-09-25 17:51:34,791 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 540 DAG size of output: 516 [2019-09-25 17:51:34,915 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-09-25 17:51:35,049 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-09-25 17:51:35,580 WARN L191 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 542 [2019-09-25 17:51:35,952 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 542 [2019-09-25 17:51:36,393 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 527 DAG size of output: 527 [2019-09-25 17:51:36,721 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 527 DAG size of output: 527 [2019-09-25 17:51:36,954 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 528 DAG size of output: 528 [2019-09-25 17:51:37,169 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 528 DAG size of output: 528 [2019-09-25 17:51:37,245 INFO L199 IcfgInterpreter]: Interpreting procedure cleanup with input of size 1 for LOIs [2019-09-25 17:51:37,247 INFO L199 IcfgInterpreter]: Interpreting procedure timeShift with input of size 492 for LOIs [2019-09-25 17:51:37,386 INFO L199 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 72 for LOIs [2019-09-25 17:51:37,393 INFO L199 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 82 for LOIs [2019-09-25 17:51:37,404 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-25 17:51:37,404 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-25 17:51:37,406 INFO L193 IcfgInterpreter]: Reachable states at location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 599#(and (= |#t~string21.offset| 0) (= |#t~string55.offset| 0) (= |#t~string56.offset| 0) (= |#t~string29.offset| 0) (= |#t~string7.offset| 0) (= |#t~string57.offset| 0) (= |#t~string67.offset| 0) (= |#t~string27.offset| 0) (= |#t~string58.offset| 0) (not (= ~pumpRunning~0 0)) (= |#t~string66.offset| 0) (= |#t~string64.offset| 0) (= |#t~string19.offset| 0) (= ~head~0.base 0) (= |#t~string59.offset| 0) (<= ~waterLevel~0 2147483647) (= |#t~string3.offset| 0) (= |#t~string9.offset| 0) (= ~cleanupTimeShifts~0 4) (= 0 ~waterLevel~0) (= |#t~string68.offset| 0) (= |#NULL.base| 0) (= |#t~string65.offset| 0) (= |#t~string1.offset| 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#t~string25.offset| 0) (= |#t~string60.offset| 0) (= ~head~0.offset 0) (<= ~pumpRunning~0 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (= |#t~string31.offset| 0) (= |#t~string69.offset| 0) (= |#NULL.offset| 0) (= |#t~string5.offset| 0) (= |#t~string17.offset| 0) (= |#t~string23.offset| 0)) [2019-09-25 17:51:37,420 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-25 17:51:37,421 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-25 17:51:37,424 INFO L168 Benchmark]: Toolchain (without parser) took 25129.08 ms. Allocated memory was 137.9 MB in the beginning and 777.5 MB in the end (delta: 639.6 MB). Free memory was 84.6 MB in the beginning and 503.4 MB in the end (delta: -418.9 MB). Peak memory consumption was 220.8 MB. Max. memory is 7.1 GB. [2019-09-25 17:51:37,430 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-25 17:51:37,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.86 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 84.4 MB in the beginning and 165.0 MB in the end (delta: -80.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2019-09-25 17:51:37,433 INFO L168 Benchmark]: Boogie Preprocessor took 84.80 ms. Allocated memory is still 198.7 MB. Free memory was 165.0 MB in the beginning and 160.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2019-09-25 17:51:37,440 INFO L168 Benchmark]: RCFGBuilder took 1669.69 ms. Allocated memory was 198.7 MB in the beginning and 219.2 MB in the end (delta: 20.4 MB). Free memory was 160.8 MB in the beginning and 144.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 95.4 MB. Max. memory is 7.1 GB. [2019-09-25 17:51:37,441 INFO L168 Benchmark]: Sifa took 22727.32 ms. Allocated memory was 219.2 MB in the beginning and 777.5 MB in the end (delta: 558.4 MB). Free memory was 144.4 MB in the beginning and 503.4 MB in the end (delta: -359.1 MB). Peak memory consumption was 199.3 MB. Max. memory is 7.1 GB. [2019-09-25 17:51:37,447 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 137.9 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 643.86 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 84.4 MB in the beginning and 165.0 MB in the end (delta: -80.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.80 ms. Allocated memory is still 198.7 MB. Free memory was 165.0 MB in the beginning and 160.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1669.69 ms. Allocated memory was 198.7 MB in the beginning and 219.2 MB in the end (delta: 20.4 MB). Free memory was 160.8 MB in the beginning and 144.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 95.4 MB. Max. memory is 7.1 GB. * Sifa took 22727.32 ms. Allocated memory was 219.2 MB in the beginning and 777.5 MB in the end (delta: 558.4 MB). Free memory was 144.4 MB in the beginning and 503.4 MB in the end (delta: -359.1 MB). Peak memory consumption was 199.3 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]: 22670, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 214, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 140, TOOLS_POST_TIME[ms]: 12078, TOOLS_POST_CALL_APPLICATIONS: 61, TOOLS_POST_CALL_TIME[ms]: 218, TOOLS_POST_RETURN_APPLICATIONS: 54, TOOLS_POST_RETURN_TIME[ms]: 120, TOOLS_QUANTIFIERELIM_APPLICATIONS: 254, TOOLS_QUANTIFIERELIM_TIME[ms]: 12272, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 11916, FLUID_QUERY_TIME[ms]: 14, FLUID_QUERIES: 216, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 77, DOMAIN_JOIN_TIME[ms]: 9728, 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]: 22, DOMAIN_ISBOTTOM_APPLICATIONS: 49, DOMAIN_ISBOTTOM_TIME[ms]: 342, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 4314, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 4313, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 54, CALL_SUMMARIZER_CACHE_MISSES: 25, CALL_SUMMARIZER_OVERALL_TIME[ms]: 12356, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 12356, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 6, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 33, DAG_COMPRESSION_PROCESSED_NODES: 523, DAG_COMPRESSION_RETAINED_NODES: 218 - UnprovableResult [Line: 944]: 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 599#(and (= |#t~string21.offset| 0) (= |#t~string55.offset| 0) (= |#t~string56.offset| 0) (= |#t~string29.offset| 0) (= |#t~string7.offset| 0) (= |#t~string57.offset| 0) (= |#t~string67.offset| 0) (= |#t~string27.offset| 0) (= |#t~string58.offset| 0) (not (= ~pumpRunning~0 0)) (= |#t~string66.offset| 0) (= |#t~string64.offset| 0) (= |#t~string19.offset| 0) (= ~head~0.base 0) (= |#t~string59.offset| 0) (<= ~waterLevel~0 2147483647) (= |#t~string3.offset| 0) (= |#t~string9.offset| 0) (= ~cleanupTimeShifts~0 4) (= 0 ~waterLevel~0) (= |#t~string68.offset| 0) (= |#NULL.base| 0) (= |#t~string65.offset| 0) (= |#t~string1.offset| 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#t~string25.offset| 0) (= |#t~string60.offset| 0) (= ~head~0.offset 0) (<= ~pumpRunning~0 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (= |#t~string31.offset| 0) (= |#t~string69.offset| 0) (= |#NULL.offset| 0) (= |#t~string5.offset| 0) (= |#t~string17.offset| 0) (= |#t~string23.offset| 0)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...