java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:58:10,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:58:10,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:58:10,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:58:10,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:58:10,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:58:10,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:58:10,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:58:10,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:58:10,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:58:10,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:58:10,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:58:10,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:58:10,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:58:10,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:58:10,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:58:10,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:58:10,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:58:10,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:58:10,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:58:10,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:58:10,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:58:10,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:58:10,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:58:10,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:58:10,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:58:10,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:58:10,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:58:10,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:58:10,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:58:10,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:58:10,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:58:10,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:58:10,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:58:10,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:58:10,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:58:10,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:58:10,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:58:10,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:58:10,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:58:10,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:58:10,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-03 02:58:10,483 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:58:10,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:58:10,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:58:10,484 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:58:10,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:58:10,485 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:58:10,485 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:58:10,486 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:58:10,486 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:58:10,486 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:58:10,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:58:10,487 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:58:10,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:58:10,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:58:10,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:58:10,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:58:10,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:58:10,488 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:58:10,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:58:10,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:58:10,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:58:10,489 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:58:10,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:58:10,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:58:10,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:58:10,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:58:10,490 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:58:10,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:58:10,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:58:10,491 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:58:10,521 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:58:10,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:58:10,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:58:10,540 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:58:10,541 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:58:10,541 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c [2019-10-03 02:58:10,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e6b61b6/d7c4a19431544ece8915d0c7f2749b66/FLAG18af6945b [2019-10-03 02:58:11,124 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:58:11,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c [2019-10-03 02:58:11,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e6b61b6/d7c4a19431544ece8915d0c7f2749b66/FLAG18af6945b [2019-10-03 02:58:11,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e6b61b6/d7c4a19431544ece8915d0c7f2749b66 [2019-10-03 02:58:11,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:58:11,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:58:11,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:58:11,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:58:11,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:58:11,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:58:11" (1/1) ... [2019-10-03 02:58:11,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376ef568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:11, skipping insertion in model container [2019-10-03 02:58:11,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:58:11" (1/1) ... [2019-10-03 02:58:11,468 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:58:11,539 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:58:12,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:58:12,046 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:58:12,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:58:12,176 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:58:12,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12 WrapperNode [2019-10-03 02:58:12,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:58:12,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:58:12,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:58:12,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:58:12,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12" (1/1) ... [2019-10-03 02:58:12,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12" (1/1) ... [2019-10-03 02:58:12,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12" (1/1) ... [2019-10-03 02:58:12,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12" (1/1) ... [2019-10-03 02:58:12,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12" (1/1) ... [2019-10-03 02:58:12,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12" (1/1) ... [2019-10-03 02:58:12,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12" (1/1) ... [2019-10-03 02:58:12,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:58:12,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:58:12,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:58:12,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:58:12,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12" (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 [2019-10-03 02:58:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:58:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:58:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-03 02:58:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-03 02:58:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-03 02:58:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-03 02:58:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-03 02:58:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-03 02:58:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-03 02:58:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-03 02:58:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-03 02:58:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:58:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-03 02:58:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-03 02:58:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-03 02:58:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-03 02:58:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-03 02:58:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-03 02:58:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-03 02:58:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-03 02:58:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-03 02:58:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-03 02:58:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-03 02:58:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-03 02:58:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-03 02:58:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-03 02:58:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-03 02:58:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-03 02:58:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-03 02:58:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-03 02:58:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-03 02:58:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-03 02:58:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-03 02:58:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-03 02:58:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-03 02:58:12,336 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-03 02:58:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:58:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:58:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-03 02:58:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-03 02:58:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-03 02:58:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-03 02:58:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-03 02:58:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-03 02:58:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-03 02:58:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-03 02:58:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-03 02:58:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-03 02:58:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-03 02:58:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-03 02:58:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-03 02:58:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-03 02:58:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:58:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-03 02:58:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-03 02:58:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-03 02:58:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-03 02:58:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-03 02:58:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:58:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-03 02:58:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-03 02:58:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-03 02:58:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:58:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:58:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-03 02:58:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:58:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:58:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:58:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:58:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-03 02:58:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:58:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-03 02:58:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-03 02:58:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:58:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-03 02:58:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-03 02:58:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-03 02:58:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-03 02:58:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-03 02:58:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-03 02:58:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-03 02:58:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-03 02:58:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-03 02:58:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:58:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:58:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:58:13,392 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:58:13,393 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-03 02:58:13,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:58:13 BoogieIcfgContainer [2019-10-03 02:58:13,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:58:13,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:58:13,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:58:13,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:58:13,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:58:11" (1/3) ... [2019-10-03 02:58:13,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c40b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:58:13, skipping insertion in model container [2019-10-03 02:58:13,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:58:12" (2/3) ... [2019-10-03 02:58:13,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c40b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:58:13, skipping insertion in model container [2019-10-03 02:58:13,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:58:13" (3/3) ... [2019-10-03 02:58:13,404 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product07.cil.c [2019-10-03 02:58:13,415 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:58:13,425 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:58:13,461 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:58:13,487 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:58:13,487 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:58:13,488 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:58:13,488 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:58:13,488 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:58:13,488 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:58:13,488 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:58:13,488 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:58:13,517 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2019-10-03 02:58:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-03 02:58:13,529 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:13,529 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:13,532 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:13,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:13,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1908164491, now seen corresponding path program 1 times [2019-10-03 02:58:13,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:13,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:13,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:13,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:13,583 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:13,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:13,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:58:13,884 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:13,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:58:13,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:58:13,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:58:13,909 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 2 states. [2019-10-03 02:58:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:13,945 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2019-10-03 02:58:13,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:58:13,947 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-03 02:58:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:13,959 INFO L225 Difference]: With dead ends: 119 [2019-10-03 02:58:13,960 INFO L226 Difference]: Without dead ends: 108 [2019-10-03 02:58:13,961 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:58:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-10-03 02:58:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2019-10-03 02:58:14,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-10-03 02:58:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2019-10-03 02:58:14,011 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 46 [2019-10-03 02:58:14,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:14,012 INFO L475 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2019-10-03 02:58:14,012 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:58:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2019-10-03 02:58:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-03 02:58:14,015 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:14,015 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:14,016 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:14,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:14,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1100286526, now seen corresponding path program 1 times [2019-10-03 02:58:14,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:14,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:14,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:14,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:14,019 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:14,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:14,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:58:14,125 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:14,127 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:58:14,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:58:14,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:58:14,128 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand 3 states. [2019-10-03 02:58:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:14,146 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2019-10-03 02:58:14,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:58:14,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-03 02:58:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:14,150 INFO L225 Difference]: With dead ends: 99 [2019-10-03 02:58:14,151 INFO L226 Difference]: Without dead ends: 99 [2019-10-03 02:58:14,153 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:58:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-10-03 02:58:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2019-10-03 02:58:14,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-10-03 02:58:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2019-10-03 02:58:14,175 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 47 [2019-10-03 02:58:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:14,175 INFO L475 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2019-10-03 02:58:14,175 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:58:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2019-10-03 02:58:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-03 02:58:14,181 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:14,181 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:14,182 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:14,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:14,182 INFO L82 PathProgramCache]: Analyzing trace with hash 418725032, now seen corresponding path program 1 times [2019-10-03 02:58:14,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:14,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:14,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:14,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:14,186 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:14,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:14,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:58:14,446 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:14,448 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:58:14,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:58:14,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:58:14,450 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand 7 states. [2019-10-03 02:58:14,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:14,950 INFO L93 Difference]: Finished difference Result 224 states and 266 transitions. [2019-10-03 02:58:14,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:58:14,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-10-03 02:58:14,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:14,959 INFO L225 Difference]: With dead ends: 224 [2019-10-03 02:58:14,961 INFO L226 Difference]: Without dead ends: 224 [2019-10-03 02:58:14,961 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-03 02:58:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2019-10-03 02:58:15,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 216. [2019-10-03 02:58:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-10-03 02:58:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2019-10-03 02:58:15,020 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 51 [2019-10-03 02:58:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:15,024 INFO L475 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2019-10-03 02:58:15,024 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:58:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2019-10-03 02:58:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-03 02:58:15,027 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:15,029 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:15,030 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:15,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:15,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2030555279, now seen corresponding path program 1 times [2019-10-03 02:58:15,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:15,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:15,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:15,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:15,035 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:15,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:15,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-03 02:58:15,279 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:15,280 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-03 02:58:15,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-03 02:58:15,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-03 02:58:15,281 INFO L87 Difference]: Start difference. First operand 216 states and 260 transitions. Second operand 10 states. [2019-10-03 02:58:15,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:15,821 INFO L93 Difference]: Finished difference Result 552 states and 691 transitions. [2019-10-03 02:58:15,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-03 02:58:15,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2019-10-03 02:58:15,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:15,828 INFO L225 Difference]: With dead ends: 552 [2019-10-03 02:58:15,828 INFO L226 Difference]: Without dead ends: 552 [2019-10-03 02:58:15,829 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-03 02:58:15,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2019-10-03 02:58:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 540. [2019-10-03 02:58:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-10-03 02:58:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 670 transitions. [2019-10-03 02:58:15,881 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 670 transitions. Word has length 57 [2019-10-03 02:58:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:15,882 INFO L475 AbstractCegarLoop]: Abstraction has 540 states and 670 transitions. [2019-10-03 02:58:15,882 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-03 02:58:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 670 transitions. [2019-10-03 02:58:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-03 02:58:15,892 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:15,892 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:15,893 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:15,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1547213643, now seen corresponding path program 1 times [2019-10-03 02:58:15,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:15,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:15,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:15,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:15,902 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:58:16,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:58:16,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:58:16,032 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:16,033 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:58:16,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:58:16,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:58:16,035 INFO L87 Difference]: Start difference. First operand 540 states and 670 transitions. Second operand 4 states. [2019-10-03 02:58:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:16,178 INFO L93 Difference]: Finished difference Result 396 states and 464 transitions. [2019-10-03 02:58:16,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:58:16,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2019-10-03 02:58:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:16,182 INFO L225 Difference]: With dead ends: 396 [2019-10-03 02:58:16,182 INFO L226 Difference]: Without dead ends: 396 [2019-10-03 02:58:16,183 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:58:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2019-10-03 02:58:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 384. [2019-10-03 02:58:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2019-10-03 02:58:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 446 transitions. [2019-10-03 02:58:16,201 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 446 transitions. Word has length 61 [2019-10-03 02:58:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:16,202 INFO L475 AbstractCegarLoop]: Abstraction has 384 states and 446 transitions. [2019-10-03 02:58:16,202 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:58:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 446 transitions. [2019-10-03 02:58:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-03 02:58:16,204 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:58:16,204 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:58:16,205 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:58:16,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:16,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1956269670, now seen corresponding path program 1 times [2019-10-03 02:58:16,205 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:58:16,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:16,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:58:16,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:58:16,208 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:58:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:58:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-03 02:58:16,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:58:16,335 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:58:16,337 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 89 with the following transitions: [2019-10-03 02:58:16,339 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [54], [57], [59], [62], [68], [70], [71], [75], [78], [107], [109], [110], [111], [147], [156], [160], [164], [167], [172], [178], [180], [183], [185], [188], [210], [211], [217], [224], [227], [265], [269], [270], [273], [274], [275], [368], [369], [379], [387], [388], [389], [390], [391], [393], [394], [395], [396], [397], [398], [399], [400], [401], [443], [444], [447], [448], [449], [450], [457], [458], [465], [473], [474], [475] [2019-10-03 02:58:16,389 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:58:16,390 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:58:16,474 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:58:16,476 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-10-03 02:58:16,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:58:16,481 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:58:16,527 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 02:58:16,527 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:58:16,532 INFO L420 sIntCurrentIteration]: We unified 87 AI predicates to 87 [2019-10-03 02:58:16,532 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:58:16,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:58:16,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2019-10-03 02:58:16,533 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:58:16,534 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:58:16,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:58:16,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:58:16,535 INFO L87 Difference]: Start difference. First operand 384 states and 446 transitions. Second operand 2 states. [2019-10-03 02:58:16,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:58:16,535 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 02:58:16,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:58:16,536 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 88 [2019-10-03 02:58:16,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:58:16,536 INFO L225 Difference]: With dead ends: 2 [2019-10-03 02:58:16,536 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:58:16,537 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:58:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:58:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:58:16,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:58:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:58:16,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2019-10-03 02:58:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:58:16,538 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:58:16,538 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:58:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:58:16,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:58:16,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:58:16 BoogieIcfgContainer [2019-10-03 02:58:16,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:58:16,548 INFO L168 Benchmark]: Toolchain (without parser) took 5103.17 ms. Allocated memory was 139.5 MB in the beginning and 263.2 MB in the end (delta: 123.7 MB). Free memory was 86.1 MB in the beginning and 77.3 MB in the end (delta: 8.8 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:16,549 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:58:16,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.10 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 85.9 MB in the beginning and 166.9 MB in the end (delta: -81.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:16,551 INFO L168 Benchmark]: Boogie Preprocessor took 85.62 ms. Allocated memory is still 200.3 MB. Free memory was 166.9 MB in the beginning and 162.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:16,552 INFO L168 Benchmark]: RCFGBuilder took 1131.80 ms. Allocated memory is still 200.3 MB. Free memory was 162.6 MB in the beginning and 79.9 MB in the end (delta: 82.7 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:16,553 INFO L168 Benchmark]: TraceAbstraction took 3148.91 ms. Allocated memory was 200.3 MB in the beginning and 263.2 MB in the end (delta: 62.9 MB). Free memory was 79.3 MB in the beginning and 77.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:58:16,558 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.10 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 85.9 MB in the beginning and 166.9 MB in the end (delta: -81.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.62 ms. Allocated memory is still 200.3 MB. Free memory was 166.9 MB in the beginning and 162.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1131.80 ms. Allocated memory is still 200.3 MB. Free memory was 162.6 MB in the beginning and 79.9 MB in the end (delta: 82.7 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3148.91 ms. Allocated memory was 200.3 MB in the beginning and 263.2 MB in the end (delta: 62.9 MB). Free memory was 79.3 MB in the beginning and 77.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 210 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 609 SDtfs, 466 SDslu, 1390 SDs, 0 SdLazy, 462 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=540occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.0804597701149425 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 344 ConstructedInterpolants, 0 QuantifiedInterpolants, 42856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 20/23 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...