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_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 07:00:08,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 07:00:08,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 07:00:08,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 07:00:08,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 07:00:08,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 07:00:08,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 07:00:08,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 07:00:08,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 07:00:08,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 07:00:08,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 07:00:08,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 07:00:08,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 07:00:08,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 07:00:08,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 07:00:08,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 07:00:08,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 07:00:08,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 07:00:08,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 07:00:08,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 07:00:08,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 07:00:08,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 07:00:08,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 07:00:08,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 07:00:08,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 07:00:08,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 07:00:08,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 07:00:08,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 07:00:08,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 07:00:08,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 07:00:08,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 07:00:08,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 07:00:08,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 07:00:08,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 07:00:08,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 07:00:08,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 07:00:08,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 07:00:08,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 07:00:08,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 07:00:08,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 07:00:08,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 07:00:08,343 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 [2019-10-15 07:00:08,363 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 07:00:08,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 07:00:08,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 07:00:08,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 07:00:08,366 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 07:00:08,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 07:00:08,366 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 07:00:08,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 07:00:08,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 07:00:08,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 07:00:08,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 07:00:08,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 07:00:08,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 07:00:08,369 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 07:00:08,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 07:00:08,369 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 07:00:08,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 07:00:08,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 07:00:08,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 07:00:08,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 07:00:08,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 07:00:08,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 07:00:08,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 07:00:08,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 07:00:08,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 07:00:08,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 07:00:08,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 07:00:08,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 07:00:08,372 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 [2019-10-15 07:00:08,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 07:00:08,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 07:00:08,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 07:00:08,679 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 07:00:08,679 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 07:00:08,680 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2019-10-15 07:00:08,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a916a1ee8/e94efc9775af4b339026ba968401ceb5/FLAGb12024af3 [2019-10-15 07:00:09,304 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 07:00:09,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2019-10-15 07:00:09,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a916a1ee8/e94efc9775af4b339026ba968401ceb5/FLAGb12024af3 [2019-10-15 07:00:09,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a916a1ee8/e94efc9775af4b339026ba968401ceb5 [2019-10-15 07:00:09,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 07:00:09,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 07:00:09,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 07:00:09,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 07:00:09,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 07:00:09,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:00:09" (1/1) ... [2019-10-15 07:00:09,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3a515f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:09, skipping insertion in model container [2019-10-15 07:00:09,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:00:09" (1/1) ... [2019-10-15 07:00:09,581 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 07:00:09,631 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 07:00:10,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 07:00:10,106 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 07:00:10,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 07:00:10,254 INFO L192 MainTranslator]: Completed translation [2019-10-15 07:00:10,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:10 WrapperNode [2019-10-15 07:00:10,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 07:00:10,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 07:00:10,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 07:00:10,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 07:00:10,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:10" (1/1) ... [2019-10-15 07:00:10,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:10" (1/1) ... [2019-10-15 07:00:10,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:10" (1/1) ... [2019-10-15 07:00:10,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:10" (1/1) ... [2019-10-15 07:00:10,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:10" (1/1) ... [2019-10-15 07:00:10,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:10" (1/1) ... [2019-10-15 07:00:10,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:10" (1/1) ... [2019-10-15 07:00:10,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 07:00:10,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 07:00:10,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 07:00:10,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 07:00:10,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:00:10" (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 [2019-10-15 07:00:10,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 07:00:10,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 07:00:10,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 07:00:10,417 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 07:00:10,417 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 07:00:10,418 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 07:00:10,418 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 07:00:10,418 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 07:00:10,418 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 07:00:10,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 07:00:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 07:00:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 07:00:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 07:00:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 07:00:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 07:00:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 07:00:10,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 07:00:10,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 07:00:10,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 07:00:10,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 07:00:10,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 07:00:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 07:00:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 07:00:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 07:00:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 07:00:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 07:00:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 07:00:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 07:00:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 07:00:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 07:00:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 07:00:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 07:00:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 07:00:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 07:00:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 07:00:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 07:00:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 07:00:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 07:00:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 07:00:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 07:00:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 07:00:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 07:00:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 07:00:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 07:00:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 07:00:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 07:00:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 07:00:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 07:00:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 07:00:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 07:00:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 07:00:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 07:00:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 07:00:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 07:00:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 07:00:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 07:00:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 07:00:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 07:00:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 07:00:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 07:00:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 07:00:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 07:00:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 07:00:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 07:00:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 07:00:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 07:00:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 07:00:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 07:00:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 07:00:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 07:00:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 07:00:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 07:00:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 07:00:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 07:00:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 07:00:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 07:00:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 07:00:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 07:00:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 07:00:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 07:00:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 07:00:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 07:00:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 07:00:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 07:00:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 07:00:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 07:00:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 07:00:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 07:00:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 07:00:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 07:00:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 07:00:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 07:00:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 07:00:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 07:00:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 07:00:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 07:00:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 07:00:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 07:00:11,967 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 07:00:11,967 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 07:00:11,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:00:11 BoogieIcfgContainer [2019-10-15 07:00:11,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 07:00:11,971 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-10-15 07:00:11,971 INFO L271 PluginConnector]: Initializing Sifa... [2019-10-15 07:00:11,972 INFO L275 PluginConnector]: Sifa initialized [2019-10-15 07:00:11,974 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:00:11" (1/1) ... [2019-10-15 07:00:11,974 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 [2019-10-15 07:00:12,016 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-10-15 07:00:12,016 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 07:00:12,027 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 07:00:12,037 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 07:00:12,039 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 07:00:22,274 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 07:00:24,283 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 07:00:24,426 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 07:00:24,557 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 07:00:24,721 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 07:00:24,994 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 07:00:25,024 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 548 for LOIs [2019-10-15 07:00:25,094 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 546 for LOIs [2019-10-15 07:00:25,116 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 546 for LOIs [2019-10-15 07:00:25,787 WARN L191 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 07:00:26,312 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 07:00:26,766 WARN L191 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 07:00:26,965 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-15 07:00:27,367 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-15 07:00:27,514 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-15 07:00:27,768 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 192 [2019-10-15 07:00:27,910 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-15 07:00:28,158 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-10-15 07:00:28,892 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 601 [2019-10-15 07:00:29,233 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 601 [2019-10-15 07:00:29,744 WARN L191 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 602 DAG size of output: 602 [2019-10-15 07:00:30,331 WARN L191 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:30,859 WARN L191 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:31,253 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:32,131 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2019-10-15 07:00:32,441 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 604 [2019-10-15 07:00:32,610 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 603 [2019-10-15 07:00:33,070 WARN L191 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:33,396 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:33,694 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:34,027 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:34,321 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:34,618 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:34,921 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:35,291 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:35,599 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:35,890 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 07:00:37,374 INFO L199 IcfgInterpreter]: Interpreting procedure cleanup with input of size 1 for LOIs [2019-10-15 07:00:37,379 INFO L199 IcfgInterpreter]: Interpreting procedure timeShift with input of size 144 for LOIs [2019-10-15 07:00:37,728 INFO L199 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 136 for LOIs [2019-10-15 07:00:37,737 INFO L199 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 150 for LOIs [2019-10-15 07:00:37,861 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 07:00:37,879 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-10-15 07:00:37,879 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-10-15 07:00:37,881 INFO L168 Benchmark]: Toolchain (without parser) took 28317.80 ms. Allocated memory was 138.9 MB in the beginning and 744.0 MB in the end (delta: 605.0 MB). Free memory was 103.5 MB in the beginning and 576.5 MB in the end (delta: -473.0 MB). Peak memory consumption was 132.0 MB. Max. memory is 7.1 GB. [2019-10-15 07:00:37,883 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-15 07:00:37,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.17 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.3 MB in the beginning and 169.4 MB in the end (delta: -66.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2019-10-15 07:00:37,885 INFO L168 Benchmark]: Boogie Preprocessor took 104.06 ms. Allocated memory is still 203.4 MB. Free memory was 169.4 MB in the beginning and 165.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-10-15 07:00:37,886 INFO L168 Benchmark]: RCFGBuilder took 1610.98 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.3 MB in the beginning and 146.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2019-10-15 07:00:37,887 INFO L168 Benchmark]: Sifa took 25907.87 ms. Allocated memory was 235.9 MB in the beginning and 744.0 MB in the end (delta: 508.0 MB). Free memory was 146.5 MB in the beginning and 576.5 MB in the end (delta: -430.1 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2019-10-15 07:00:37,891 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.17 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.3 MB in the beginning and 169.4 MB in the end (delta: -66.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.06 ms. Allocated memory is still 203.4 MB. Free memory was 169.4 MB in the beginning and 165.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1610.98 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.3 MB in the beginning and 146.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * Sifa took 25907.87 ms. Allocated memory was 235.9 MB in the beginning and 744.0 MB in the end (delta: 508.0 MB). Free memory was 146.5 MB in the beginning and 576.5 MB in the end (delta: -430.1 MB). Peak memory consumption was 78.0 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]: 25846, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 230, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 161, TOOLS_POST_TIME[ms]: 12427, TOOLS_POST_CALL_APPLICATIONS: 65, TOOLS_POST_CALL_TIME[ms]: 184, TOOLS_POST_RETURN_APPLICATIONS: 58, TOOLS_POST_RETURN_TIME[ms]: 103, TOOLS_QUANTIFIERELIM_APPLICATIONS: 283, TOOLS_QUANTIFIERELIM_TIME[ms]: 12590, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 12322, FLUID_QUERY_TIME[ms]: 16, FLUID_QUERIES: 232, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 85, DOMAIN_JOIN_TIME[ms]: 11619, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 1132, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 17, DOMAIN_ISBOTTOM_APPLICATIONS: 37, DOMAIN_ISBOTTOM_TIME[ms]: 188, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 7171, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 7170, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 58, CALL_SUMMARIZER_CACHE_MISSES: 27, CALL_SUMMARIZER_OVERALL_TIME[ms]: 13159, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 13158, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 8, REGEX_TO_DAG_TIME[ms]: 6, DAG_COMPRESSION_TIME[ms]: 44, DAG_COMPRESSION_PROCESSED_NODES: 601, DAG_COMPRESSION_RETAINED_NODES: 265 - UnprovableResult [Line: 850]: 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 834#(and (= |#t~string55.offset| 0) (<= 0 (+ ~switchedOnBeforeTS~0 2147483648)) (<= 0 |#NULL.base|) (<= |#t~string67.offset| 0) (<= ~systemActive~0 1) (<= 0 |#t~string52.offset|) (<= ~head~0.offset 0) (<= |#t~string73.offset| 0) (= |#t~string46.offset| 0) (<= 0 |#t~string67.offset|) (<= 0 |#t~string46.offset|) (<= 0 ~switchedOnBeforeTS~0) (= |#t~string52.offset| 0) (= |#NULL.base| 0) (= |#t~string71.offset| 0) (<= 0 |#t~string51.offset|) (<= 0 (+ ~pumpRunning~0 2147483648)) (<= 0 ~head~0.base) (<= 0 |#t~string6.offset|) (<= 0 |#t~string45.offset|) (<= 0 |#t~string42.offset|) (<= 0 ~methaneLevelCritical~0) (<= ~switchedOnBeforeTS~0 2147483647) (<= ~switchedOnBeforeTS~0 0) (<= 0 |#t~string44.offset|) (<= 0 |#t~string10.offset|) (= |#t~string51.offset| 0) (<= |#t~string53.offset| 0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= |#t~string18.offset| 0) (<= |#t~string45.offset| 0) (<= |#t~string65.offset| 0) (<= 0 |#t~string43.offset|) (= |#t~string8.offset| 0) (<= |#t~string14.offset| 0) (= |#t~string56.offset| 0) (<= 0 |#t~string53.offset|) (= |#t~string4.offset| 0) (= |#t~string42.offset| 0) (= ~switchedOnBeforeTS~0 0) (= |#t~string67.offset| 0) (= |#t~string14.offset| 0) (<= 0 |#NULL.offset|) (= ~head~0.base 0) (<= ~cleanupTimeShifts~0 4) (<= 0 |#t~string73.offset|) (= ~cleanupTimeShifts~0 4) (= |#t~string73.offset| 0) (<= 0 |#t~string16.offset|) (<= 0 |#t~string47.offset|) (<= |#NULL.base| 0) (= |#t~string18.offset| 0) (<= 0 |#t~string71.offset|) (<= |#t~string46.offset| 0) (= |#t~string16.offset| 0) (<= 4 ~cleanupTimeShifts~0) (<= |#t~string10.offset| 0) (not (= 2 ~waterLevel~0)) (= |#t~string69.offset| 0) (= |#NULL.offset| 0) (<= |#t~string4.offset| 0) (= |#t~string53.offset| 0) (<= |#t~string8.offset| 0) (<= ~head~0.base 0) (= |#t~string47.offset| 0) (<= 0 ~head~0.offset) (= |#t~string10.offset| 0) (not (= ~pumpRunning~0 0)) (<= |#t~string52.offset| 0) (<= |#t~string16.offset| 0) (= |#t~string12.offset| 0) (<= ~waterLevel~0 2147483647) (<= 0 |#t~string18.offset|) (<= |#t~string55.offset| 0) (= |#t~string43.offset| 0) (<= |#t~string56.offset| 0) (<= |#t~string51.offset| 0) (= |#t~string65.offset| 0) (<= 0 |#t~string69.offset|) (<= 0 |#t~string8.offset|) (<= |#NULL.offset| 0) (= ~head~0.offset 0) (<= |#t~string71.offset| 0) (<= |#t~string6.offset| 0) (<= ~pumpRunning~0 2147483647) (<= |#t~string44.offset| 0) (<= |#t~string47.offset| 0) (<= 0 |#t~string65.offset|) (<= 0 |#t~string56.offset|) (= |#t~string44.offset| 0) (<= |#t~string42.offset| 0) (= |#t~string54.offset| 0) (<= 0 |#t~string54.offset|) (<= |#t~string69.offset| 0) (<= |#t~string43.offset| 0) (<= 0 ~systemActive~0) (<= 0 |#t~string4.offset|) (<= ~methaneLevelCritical~0 1) (<= 0 |#t~string14.offset|) (<= 0 |#t~string12.offset|) (= |#t~string6.offset| 0) (<= |#t~string54.offset| 0) (<= |#t~string12.offset| 0) (= |#t~string45.offset| 0) (<= 0 |#t~string55.offset|)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...