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 CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-04 12:48:41,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-04 12:48:41,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-04 12:48:41,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-04 12:48:41,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-04 12:48:41,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-04 12:48:41,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-04 12:48:41,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-04 12:48:41,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-04 12:48:41,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-04 12:48:41,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-04 12:48:41,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-04 12:48:41,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-04 12:48:41,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-04 12:48:41,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-04 12:48:41,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-04 12:48:41,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-04 12:48:41,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-04 12:48:41,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-04 12:48:41,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-04 12:48:41,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-04 12:48:41,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-04 12:48:41,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-04 12:48:41,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-04 12:48:41,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-04 12:48:41,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-04 12:48:41,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-04 12:48:41,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-04 12:48:41,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-04 12:48:41,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-04 12:48:41,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-04 12:48:41,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-04 12:48:41,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-04 12:48:41,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-04 12:48:41,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-04 12:48:41,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-04 12:48:41,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-04 12:48:41,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-04 12:48:41,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-04 12:48:41,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-04 12:48:41,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-04 12:48:41,666 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 [2019-10-04 12:48:41,684 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-04 12:48:41,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-04 12:48:41,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-04 12:48:41,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-04 12:48:41,686 INFO L138 SettingsManager]: * Use SBE=true [2019-10-04 12:48:41,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-04 12:48:41,687 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-04 12:48:41,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-04 12:48:41,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-04 12:48:41,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-04 12:48:41,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-04 12:48:41,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-04 12:48:41,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-04 12:48:41,688 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-04 12:48:41,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-04 12:48:41,689 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-04 12:48:41,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-04 12:48:41,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-04 12:48:41,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-04 12:48:41,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-04 12:48:41,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-04 12:48:41,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-04 12:48:41,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-04 12:48:41,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-04 12:48:41,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-04 12:48:41,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-04 12:48:41,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-04 12:48:41,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-04 12:48:41,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain 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: Simplification Technique -> SIMPLIFY_QUICK [2019-10-04 12:48:41,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-04 12:48:41,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-04 12:48:41,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-04 12:48:41,743 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-04 12:48:41,744 INFO L275 PluginConnector]: CDTParser initialized [2019-10-04 12:48:41,745 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product22.cil.c [2019-10-04 12:48:41,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5bd6db7/1041ccd78415453284e8ea8304278f88/FLAG6d385f28f [2019-10-04 12:48:42,330 INFO L306 CDTParser]: Found 1 translation units. [2019-10-04 12:48:42,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product22.cil.c [2019-10-04 12:48:42,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5bd6db7/1041ccd78415453284e8ea8304278f88/FLAG6d385f28f [2019-10-04 12:48:42,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5bd6db7/1041ccd78415453284e8ea8304278f88 [2019-10-04 12:48:42,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-04 12:48:42,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-04 12:48:42,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-04 12:48:42,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-04 12:48:42,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-04 12:48:42,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 12:48:42" (1/1) ... [2019-10-04 12:48:42,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191613fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:42, skipping insertion in model container [2019-10-04 12:48:42,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 12:48:42" (1/1) ... [2019-10-04 12:48:42,668 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-04 12:48:42,731 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-04 12:48:43,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-04 12:48:43,214 INFO L188 MainTranslator]: Completed pre-run [2019-10-04 12:48:43,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-04 12:48:43,371 INFO L192 MainTranslator]: Completed translation [2019-10-04 12:48:43,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:43 WrapperNode [2019-10-04 12:48:43,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-04 12:48:43,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-04 12:48:43,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-04 12:48:43,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-04 12:48:43,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:43" (1/1) ... [2019-10-04 12:48:43,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:43" (1/1) ... [2019-10-04 12:48:43,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:43" (1/1) ... [2019-10-04 12:48:43,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:43" (1/1) ... [2019-10-04 12:48:43,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:43" (1/1) ... [2019-10-04 12:48:43,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:43" (1/1) ... [2019-10-04 12:48:43,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:43" (1/1) ... [2019-10-04 12:48:43,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-04 12:48:43,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-04 12:48:43,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-04 12:48:43,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-04 12:48:43,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 12:48:43" (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 [2019-10-04 12:48:43,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-04 12:48:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-04 12:48:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-04 12:48:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-04 12:48:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-04 12:48:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-04 12:48:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-04 12:48:43,539 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-04 12:48:43,539 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-04 12:48:43,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-04 12:48:43,539 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-04 12:48:43,539 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-04 12:48:43,539 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-04 12:48:43,540 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-04 12:48:43,540 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-04 12:48:43,540 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-04 12:48:43,540 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-04 12:48:43,540 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-04 12:48:43,541 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-04 12:48:43,541 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-04 12:48:43,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-04 12:48:43,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-04 12:48:43,541 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-04 12:48:43,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-04 12:48:43,541 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-04 12:48:43,542 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-04 12:48:43,542 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-04 12:48:43,542 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-04 12:48:43,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-04 12:48:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-04 12:48:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-04 12:48:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-04 12:48:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-04 12:48:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-04 12:48:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-04 12:48:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-04 12:48:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-04 12:48:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-04 12:48:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-04 12:48:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-04 12:48:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-04 12:48:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-04 12:48:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-04 12:48:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-04 12:48:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-04 12:48:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-04 12:48:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-04 12:48:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-04 12:48:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-04 12:48:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-04 12:48:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-04 12:48:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-04 12:48:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-04 12:48:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-04 12:48:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-04 12:48:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-04 12:48:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-04 12:48:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-04 12:48:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-04 12:48:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-04 12:48:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-04 12:48:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-04 12:48:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-04 12:48:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-04 12:48:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-04 12:48:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-04 12:48:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-04 12:48:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-04 12:48:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-04 12:48:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-04 12:48:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-04 12:48:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-04 12:48:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-04 12:48:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-04 12:48:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-04 12:48:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-04 12:48:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-04 12:48:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-04 12:48:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-04 12:48:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-04 12:48:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-04 12:48:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-04 12:48:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-04 12:48:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-04 12:48:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-04 12:48:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-04 12:48:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-04 12:48:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-04 12:48:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-04 12:48:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-04 12:48:43,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-04 12:48:43,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-04 12:48:45,221 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-04 12:48:45,222 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-04 12:48:45,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:48:45 BoogieIcfgContainer [2019-10-04 12:48:45,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-04 12:48:45,224 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-10-04 12:48:45,224 INFO L271 PluginConnector]: Initializing Sifa... [2019-10-04 12:48:45,224 INFO L275 PluginConnector]: Sifa initialized [2019-10-04 12:48:45,226 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:48:45" (1/1) ... [2019-10-04 12:48:45,226 INFO L79 SifaObserver]: LogSizeWrapperFluid Intern Fluid=SizeLimitFluid ♦ Abstract Domain=CompoundDomain ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ 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=8 ♦ Simplification Technique=SIMPLIFY_QUICK ♦ SizeLimitFluid Max. DAG Size=-1 [2019-10-04 12:48:45,254 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-10-04 12:48:45,254 INFO L169 IcfgInterpreter]: Building call graph [2019-10-04 12:48:45,270 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-04 12:48:45,280 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-04 12:48:45,282 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-04 12:48:55,708 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-04 12:48:57,498 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-04 12:48:57,651 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-04 12:48:57,800 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-04 12:48:57,932 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-04 12:48:58,166 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-04 12:48:58,184 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-04 12:48:58,244 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 542 for LOIs [2019-10-04 12:48:58,252 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 540 for LOIs [2019-10-04 12:48:58,508 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-04 12:48:58,681 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-04 12:48:59,284 WARN L191 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-04 12:49:00,021 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 182 [2019-10-04 12:49:00,508 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 179 [2019-10-04 12:49:00,766 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 600 [2019-10-04 12:49:02,665 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2019-10-04 12:49:03,031 INFO L199 IcfgInterpreter]: Interpreting procedure cleanup with input of size 1 for LOIs [2019-10-04 12:49:03,034 INFO L199 IcfgInterpreter]: Interpreting procedure timeShift with input of size 139 for LOIs [2019-10-04 12:49:03,221 INFO L199 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 129 for LOIs [2019-10-04 12:49:03,229 INFO L199 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 142 for LOIs [2019-10-04 12:49:03,297 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-04 12:49:03,297 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-04 12:49:03,299 INFO L193 IcfgInterpreter]: Reachable states at location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 536#(and (<= |#t~string58.offset| 0) (= |#t~string61.offset| 0) (= |#t~string7.offset| 0) (<= 0 |#NULL.base|) (= |#t~string15.offset| 0) (= |#t~string27.offset| 0) (<= |#t~string67.offset| 0) (<= ~systemActive~0 1) (<= ~head~0.offset 0) (= |#t~string3.offset| 0) (= |#t~string9.offset| 0) (<= 0 |#t~string67.offset|) (= 0 ~waterLevel~0) (<= 0 |#t~string60.offset|) (= |#NULL.base| 0) (<= |#t~string1.offset| 0) (<= |#t~string57.offset| 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (<= 0 ~head~0.base) (= |#t~string25.offset| 0) (<= |#t~string15.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= 0 |#t~string61.offset|) (<= |#t~string65.offset| 0) (<= 0 ~waterLevel~0) (= |#t~string56.offset| 0) (= |#t~string29.offset| 0) (<= |#t~string66.offset| 0) (<= 0 |#t~string9.offset|) (= |#t~string57.offset| 0) (= |#t~string67.offset| 0) (<= 0 |#t~string15.offset|) (<= 0 |#NULL.offset|) (= |#t~string66.offset| 0) (<= |#t~string60.offset| 0) (= ~head~0.base 0) (<= ~cleanupTimeShifts~0 4) (= ~cleanupTimeShifts~0 4) (= |#t~string68.offset| 0) (<= |#NULL.base| 0) (<= 1 ~systemActive~0) (<= |#t~string17.offset| 0) (<= 4 ~cleanupTimeShifts~0) (= |#t~string70.offset| 0) (<= |#t~string68.offset| 0) (<= 0 |#t~string3.offset|) (= |#t~string69.offset| 0) (<= |#t~string25.offset| 0) (= |#NULL.offset| 0) (<= 0 |#t~string57.offset|) (= |#t~string23.offset| 0) (= |#t~string21.offset| 0) (<= 0 |#t~string27.offset|) (<= ~head~0.base 0) (<= 0 |#t~string19.offset|) (<= 0 ~head~0.offset) (<= 0 |#t~string70.offset|) (<= 0 |#t~string17.offset|) (not (= ~pumpRunning~0 0)) (<= ~waterLevel~0 2147483647) (<= ~waterLevel~0 0) (<= |#t~string70.offset| 0) (<= |#t~string56.offset| 0) (<= 0 |#t~string59.offset|) (<= 0 |#t~string21.offset|) (= |#t~string65.offset| 0) (= |#t~string1.offset| 0) (<= 0 |#t~string69.offset|) (<= 0 |#t~string1.offset|) (<= |#NULL.offset| 0) (<= |#t~string7.offset| 0) (<= |#t~string9.offset| 0) (= ~head~0.offset 0) (<= ~pumpRunning~0 2147483647) (= |#t~string5.offset| 0) (<= |#t~string27.offset| 0) (<= 0 |#t~string65.offset|) (<= 0 |#t~string56.offset|) (<= 0 |#t~string7.offset|) (<= |#t~string21.offset| 0) (<= |#t~string61.offset| 0) (<= |#t~string59.offset| 0) (<= 0 |#t~string23.offset|) (= |#t~string58.offset| 0) (<= |#t~string69.offset| 0) (= |#t~string19.offset| 0) (= |#t~string59.offset| 0) (<= 0 |#t~string29.offset|) (<= 0 |#t~string5.offset|) (<= |#t~string3.offset| 0) (<= |#t~string5.offset| 0) (<= 0 |#t~string66.offset|) (<= |#t~string23.offset| 0) (= |#t~string60.offset| 0) (<= |#t~string29.offset| 0) (<= |#t~string19.offset| 0) (<= 0 |#t~string25.offset|) (= |#t~string17.offset| 0) (<= 0 |#t~string58.offset|) (<= 0 |#t~string68.offset|)) [2019-10-04 12:49:03,313 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-10-04 12:49:03,313 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-10-04 12:49:03,315 INFO L168 Benchmark]: Toolchain (without parser) took 20665.74 ms. Allocated memory was 137.9 MB in the beginning and 533.2 MB in the end (delta: 395.3 MB). Free memory was 84.4 MB in the beginning and 82.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 397.1 MB. Max. memory is 7.1 GB. [2019-10-04 12:49:03,321 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-04 12:49:03,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.10 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 84.2 MB in the beginning and 163.1 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2019-10-04 12:49:03,330 INFO L168 Benchmark]: Boogie Preprocessor took 96.88 ms. Allocated memory is still 198.7 MB. Free memory was 163.1 MB in the beginning and 159.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2019-10-04 12:49:03,331 INFO L168 Benchmark]: RCFGBuilder took 1752.77 ms. Allocated memory was 198.7 MB in the beginning and 219.2 MB in the end (delta: 20.4 MB). Free memory was 159.1 MB in the beginning and 145.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. [2019-10-04 12:49:03,332 INFO L168 Benchmark]: Sifa took 18089.59 ms. Allocated memory was 219.2 MB in the beginning and 533.2 MB in the end (delta: 314.0 MB). Free memory was 143.7 MB in the beginning and 82.7 MB in the end (delta: 61.0 MB). Peak memory consumption was 375.1 MB. Max. memory is 7.1 GB. [2019-10-04 12:49:03,344 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.10 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 84.2 MB in the beginning and 163.1 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.88 ms. Allocated memory is still 198.7 MB. Free memory was 163.1 MB in the beginning and 159.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1752.77 ms. Allocated memory was 198.7 MB in the beginning and 219.2 MB in the end (delta: 20.4 MB). Free memory was 159.1 MB in the beginning and 145.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. * Sifa took 18089.59 ms. Allocated memory was 219.2 MB in the beginning and 533.2 MB in the end (delta: 314.0 MB). Free memory was 143.7 MB in the beginning and 82.7 MB in the end (delta: 61.0 MB). Peak memory consumption was 375.1 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]: 18045, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 191, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 122, TOOLS_POST_TIME[ms]: 12335, TOOLS_POST_CALL_APPLICATIONS: 57, TOOLS_POST_CALL_TIME[ms]: 168, TOOLS_POST_RETURN_APPLICATIONS: 50, TOOLS_POST_RETURN_TIME[ms]: 75, TOOLS_QUANTIFIERELIM_APPLICATIONS: 228, TOOLS_QUANTIFIERELIM_TIME[ms]: 12471, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 12265, FLUID_QUERY_TIME[ms]: 14, FLUID_QUERIES: 193, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 59, DOMAIN_JOIN_TIME[ms]: 4913, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 297, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 18, DOMAIN_ISBOTTOM_APPLICATIONS: 33, DOMAIN_ISBOTTOM_TIME[ms]: 85, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 3040, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 3039, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 50, CALL_SUMMARIZER_CACHE_MISSES: 25, CALL_SUMMARIZER_OVERALL_TIME[ms]: 13020, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 13019, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 8, PATH_EXPR_TIME[ms]: 8, REGEX_TO_DAG_TIME[ms]: 5, DAG_COMPRESSION_TIME[ms]: 30, DAG_COMPRESSION_PROCESSED_NODES: 379, DAG_COMPRESSION_RETAINED_NODES: 211 - UnprovableResult [Line: 535]: 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 536#(and (<= |#t~string58.offset| 0) (= |#t~string61.offset| 0) (= |#t~string7.offset| 0) (<= 0 |#NULL.base|) (= |#t~string15.offset| 0) (= |#t~string27.offset| 0) (<= |#t~string67.offset| 0) (<= ~systemActive~0 1) (<= ~head~0.offset 0) (= |#t~string3.offset| 0) (= |#t~string9.offset| 0) (<= 0 |#t~string67.offset|) (= 0 ~waterLevel~0) (<= 0 |#t~string60.offset|) (= |#NULL.base| 0) (<= |#t~string1.offset| 0) (<= |#t~string57.offset| 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (<= 0 ~head~0.base) (= |#t~string25.offset| 0) (<= |#t~string15.offset| 0) (<= 0 ~methaneLevelCritical~0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= 0 |#t~string61.offset|) (<= |#t~string65.offset| 0) (<= 0 ~waterLevel~0) (= |#t~string56.offset| 0) (= |#t~string29.offset| 0) (<= |#t~string66.offset| 0) (<= 0 |#t~string9.offset|) (= |#t~string57.offset| 0) (= |#t~string67.offset| 0) (<= 0 |#t~string15.offset|) (<= 0 |#NULL.offset|) (= |#t~string66.offset| 0) (<= |#t~string60.offset| 0) (= ~head~0.base 0) (<= ~cleanupTimeShifts~0 4) (= ~cleanupTimeShifts~0 4) (= |#t~string68.offset| 0) (<= |#NULL.base| 0) (<= 1 ~systemActive~0) (<= |#t~string17.offset| 0) (<= 4 ~cleanupTimeShifts~0) (= |#t~string70.offset| 0) (<= |#t~string68.offset| 0) (<= 0 |#t~string3.offset|) (= |#t~string69.offset| 0) (<= |#t~string25.offset| 0) (= |#NULL.offset| 0) (<= 0 |#t~string57.offset|) (= |#t~string23.offset| 0) (= |#t~string21.offset| 0) (<= 0 |#t~string27.offset|) (<= ~head~0.base 0) (<= 0 |#t~string19.offset|) (<= 0 ~head~0.offset) (<= 0 |#t~string70.offset|) (<= 0 |#t~string17.offset|) (not (= ~pumpRunning~0 0)) (<= ~waterLevel~0 2147483647) (<= ~waterLevel~0 0) (<= |#t~string70.offset| 0) (<= |#t~string56.offset| 0) (<= 0 |#t~string59.offset|) (<= 0 |#t~string21.offset|) (= |#t~string65.offset| 0) (= |#t~string1.offset| 0) (<= 0 |#t~string69.offset|) (<= 0 |#t~string1.offset|) (<= |#NULL.offset| 0) (<= |#t~string7.offset| 0) (<= |#t~string9.offset| 0) (= ~head~0.offset 0) (<= ~pumpRunning~0 2147483647) (= |#t~string5.offset| 0) (<= |#t~string27.offset| 0) (<= 0 |#t~string65.offset|) (<= 0 |#t~string56.offset|) (<= 0 |#t~string7.offset|) (<= |#t~string21.offset| 0) (<= |#t~string61.offset| 0) (<= |#t~string59.offset| 0) (<= 0 |#t~string23.offset|) (= |#t~string58.offset| 0) (<= |#t~string69.offset| 0) (= |#t~string19.offset| 0) (= |#t~string59.offset| 0) (<= 0 |#t~string29.offset|) (<= 0 |#t~string5.offset|) (<= |#t~string3.offset| 0) (<= |#t~string5.offset| 0) (<= 0 |#t~string66.offset|) (<= |#t~string23.offset| 0) (= |#t~string60.offset| 0) (<= |#t~string29.offset| 0) (<= |#t~string19.offset| 0) (<= 0 |#t~string25.offset|) (= |#t~string17.offset| 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...