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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:34:09,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:34:09,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:34:09,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:34:09,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:34:09,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:34:09,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:34:09,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:34:09,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:34:09,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:34:09,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:34:09,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:34:09,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:34:09,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:34:09,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:34:09,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:34:09,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:34:09,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:34:09,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:34:09,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:34:09,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:34:09,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:34:09,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:34:09,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:34:09,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:34:09,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:34:09,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:34:09,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:34:09,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:34:09,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:34:09,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:34:09,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:34:09,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:34:09,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:34:09,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:34:09,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:34:09,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:34:09,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:34:09,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:34:09,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:34:09,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:34:09,787 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 [2019-10-13 19:34:09,809 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:34:09,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:34:09,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:34:09,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:34:09,811 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:34:09,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:34:09,812 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:34:09,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:34:09,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:34:09,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:34:09,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:34:09,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:34:09,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:34:09,814 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:34:09,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:34:09,814 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:34:09,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:34:09,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:34:09,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:34:09,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:34:09,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:34:09,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:34:09,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:34:09,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:34:09,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:34:09,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:34:09,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:34:09,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:34:09,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:34:10,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:34:10,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:34:10,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:34:10,148 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:34:10,149 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:34:10,149 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product15.cil.c [2019-10-13 19:34:10,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c664016/d2729233e68940dcb39a1e759dba2b12/FLAG5ef315e0f [2019-10-13 19:34:10,789 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:34:10,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product15.cil.c [2019-10-13 19:34:10,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c664016/d2729233e68940dcb39a1e759dba2b12/FLAG5ef315e0f [2019-10-13 19:34:11,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c664016/d2729233e68940dcb39a1e759dba2b12 [2019-10-13 19:34:11,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:34:11,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:34:11,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:11,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:34:11,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:34:11,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:11" (1/1) ... [2019-10-13 19:34:11,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a202d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11, skipping insertion in model container [2019-10-13 19:34:11,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:11" (1/1) ... [2019-10-13 19:34:11,121 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:34:11,172 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:34:11,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:11,627 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:34:11,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:11,741 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:34:11,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11 WrapperNode [2019-10-13 19:34:11,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:11,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:34:11,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:34:11,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:34:11,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11" (1/1) ... [2019-10-13 19:34:11,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11" (1/1) ... [2019-10-13 19:34:11,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11" (1/1) ... [2019-10-13 19:34:11,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11" (1/1) ... [2019-10-13 19:34:11,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11" (1/1) ... [2019-10-13 19:34:11,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11" (1/1) ... [2019-10-13 19:34:11,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11" (1/1) ... [2019-10-13 19:34:11,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:34:11,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:34:11,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:34:11,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:34:11,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11" (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 [2019-10-13 19:34:11,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:34:11,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:34:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:34:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:34:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:34:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:34:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:34:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:34:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:34:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:34:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:34:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:34:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:34:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:34:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:34:11,939 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:34:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:34:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:34:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:34:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:34:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:34:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2019-10-13 19:34:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:34:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:34:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:34:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:34:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:34:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:34:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:34:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:34:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:34:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:34:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:34:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:34:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:34:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:34:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:34:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:34:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:34:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:34:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:34:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:34:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:34:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:34:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:34:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:34:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:34:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:34:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:34:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:34:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:34:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:34:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:34:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:34:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:34:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:34:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:34:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:34:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:34:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:34:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:34:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:34:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2019-10-13 19:34:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:34:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:34:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:34:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:34:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:34:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:34:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:34:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:34:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:34:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:34:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:34:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:34:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:34:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:34:11,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:34:13,050 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:34:13,052 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:34:13,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:13 BoogieIcfgContainer [2019-10-13 19:34:13,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:34:13,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:34:13,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:34:13,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:34:13,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:34:11" (1/3) ... [2019-10-13 19:34:13,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f06d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:13, skipping insertion in model container [2019-10-13 19:34:13,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:11" (2/3) ... [2019-10-13 19:34:13,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f06d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:13, skipping insertion in model container [2019-10-13 19:34:13,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:13" (3/3) ... [2019-10-13 19:34:13,063 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product15.cil.c [2019-10-13 19:34:13,073 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:34:13,082 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:34:13,093 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:34:13,121 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:34:13,121 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:34:13,121 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:34:13,121 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:34:13,122 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:34:13,122 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:34:13,122 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:34:13,122 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:34:13,146 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2019-10-13 19:34:13,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:34:13,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:13,157 INFO L380 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] [2019-10-13 19:34:13,160 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:13,166 INFO L82 PathProgramCache]: Analyzing trace with hash 178766383, now seen corresponding path program 1 times [2019-10-13 19:34:13,175 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:13,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487330613] [2019-10-13 19:34:13,176 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:13,176 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:13,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:13,922 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:14,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487330613] [2019-10-13 19:34:14,003 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:14,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:34:14,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207543910] [2019-10-13 19:34:14,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:34:14,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:14,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:34:14,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:34:14,035 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2019-10-13 19:34:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:15,226 INFO L93 Difference]: Finished difference Result 251 states and 336 transitions. [2019-10-13 19:34:15,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:34:15,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:34:15,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:15,255 INFO L225 Difference]: With dead ends: 251 [2019-10-13 19:34:15,255 INFO L226 Difference]: Without dead ends: 137 [2019-10-13 19:34:15,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:34:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-10-13 19:34:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 105. [2019-10-13 19:34:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-10-13 19:34:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2019-10-13 19:34:15,360 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 46 [2019-10-13 19:34:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:15,361 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2019-10-13 19:34:15,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:34:15,362 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2019-10-13 19:34:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:34:15,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:15,368 INFO L380 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] [2019-10-13 19:34:15,368 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:15,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1214184321, now seen corresponding path program 1 times [2019-10-13 19:34:15,369 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:15,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805553473] [2019-10-13 19:34:15,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:15,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:15,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:15,778 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:15,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805553473] [2019-10-13 19:34:15,819 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:15,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:34:15,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196022974] [2019-10-13 19:34:15,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:34:15,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:15,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:34:15,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:34:15,823 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand 4 states. [2019-10-13 19:34:16,298 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:34:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:16,950 INFO L93 Difference]: Finished difference Result 178 states and 219 transitions. [2019-10-13 19:34:16,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:34:16,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:34:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:16,955 INFO L225 Difference]: With dead ends: 178 [2019-10-13 19:34:16,955 INFO L226 Difference]: Without dead ends: 121 [2019-10-13 19:34:16,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:34:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-13 19:34:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 96. [2019-10-13 19:34:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-10-13 19:34:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 112 transitions. [2019-10-13 19:34:16,986 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 112 transitions. Word has length 47 [2019-10-13 19:34:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:16,986 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 112 transitions. [2019-10-13 19:34:16,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:34:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 112 transitions. [2019-10-13 19:34:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:34:16,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:16,989 INFO L380 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] [2019-10-13 19:34:16,989 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:16,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:16,990 INFO L82 PathProgramCache]: Analyzing trace with hash -75048457, now seen corresponding path program 1 times [2019-10-13 19:34:16,990 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:16,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796979392] [2019-10-13 19:34:16,990 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:16,990 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:16,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:17,307 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:17,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796979392] [2019-10-13 19:34:17,402 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:17,403 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:34:17,403 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958336206] [2019-10-13 19:34:17,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:34:17,404 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:17,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:34:17,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:34:17,404 INFO L87 Difference]: Start difference. First operand 96 states and 112 transitions. Second operand 8 states. [2019-10-13 19:34:17,964 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:34:18,283 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:34:18,544 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:18,850 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:19,635 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:34:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:21,090 INFO L93 Difference]: Finished difference Result 336 states and 422 transitions. [2019-10-13 19:34:21,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:34:21,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:34:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:21,096 INFO L225 Difference]: With dead ends: 336 [2019-10-13 19:34:21,096 INFO L226 Difference]: Without dead ends: 264 [2019-10-13 19:34:21,097 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:34:21,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-10-13 19:34:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 210. [2019-10-13 19:34:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-10-13 19:34:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 256 transitions. [2019-10-13 19:34:21,170 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 256 transitions. Word has length 51 [2019-10-13 19:34:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:21,170 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 256 transitions. [2019-10-13 19:34:21,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:34:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 256 transitions. [2019-10-13 19:34:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:34:21,173 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:21,173 INFO L380 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] [2019-10-13 19:34:21,174 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:21,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:21,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1167362893, now seen corresponding path program 1 times [2019-10-13 19:34:21,174 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:21,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259200097] [2019-10-13 19:34:21,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:21,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:21,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:21,564 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:21,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259200097] [2019-10-13 19:34:21,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:21,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:34:21,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365893596] [2019-10-13 19:34:21,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:34:21,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:21,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:34:21,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:34:21,648 INFO L87 Difference]: Start difference. First operand 210 states and 256 transitions. Second operand 8 states. [2019-10-13 19:34:22,231 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:34:23,258 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:23,692 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:34:24,032 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:24,368 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:24,743 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:34:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:25,430 INFO L93 Difference]: Finished difference Result 680 states and 901 transitions. [2019-10-13 19:34:25,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:34:25,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-13 19:34:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:25,441 INFO L225 Difference]: With dead ends: 680 [2019-10-13 19:34:25,441 INFO L226 Difference]: Without dead ends: 494 [2019-10-13 19:34:25,443 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:34:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2019-10-13 19:34:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 375. [2019-10-13 19:34:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2019-10-13 19:34:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 462 transitions. [2019-10-13 19:34:25,546 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 462 transitions. Word has length 57 [2019-10-13 19:34:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:25,546 INFO L462 AbstractCegarLoop]: Abstraction has 375 states and 462 transitions. [2019-10-13 19:34:25,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:34:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 462 transitions. [2019-10-13 19:34:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:34:25,550 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:25,550 INFO L380 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] [2019-10-13 19:34:25,550 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:25,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2126623889, now seen corresponding path program 1 times [2019-10-13 19:34:25,551 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:25,551 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960620698] [2019-10-13 19:34:25,551 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:25,551 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:25,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:25,926 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:26,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960620698] [2019-10-13 19:34:26,008 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:26,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:34:26,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72298607] [2019-10-13 19:34:26,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:34:26,009 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:26,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:34:26,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:34:26,009 INFO L87 Difference]: Start difference. First operand 375 states and 462 transitions. Second operand 9 states. [2019-10-13 19:34:26,552 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:34:27,525 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:27,868 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:28,133 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:28,430 INFO L93 Difference]: Finished difference Result 705 states and 922 transitions. [2019-10-13 19:34:28,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:34:28,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-13 19:34:28,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:28,432 INFO L225 Difference]: With dead ends: 705 [2019-10-13 19:34:28,432 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:34:28,435 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:34:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:34:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:34:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:34:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:34:28,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2019-10-13 19:34:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:28,436 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:34:28,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:34:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:34:28,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:34:28,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:34:29,091 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2019-10-13 19:34:31,156 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 9 [2019-10-13 19:34:31,324 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 22 [2019-10-13 19:34:31,598 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:31,762 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 24 [2019-10-13 19:34:32,074 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 11 [2019-10-13 19:34:32,577 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 14 [2019-10-13 19:34:32,746 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 24 [2019-10-13 19:34:32,901 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 1 [2019-10-13 19:34:33,219 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 8 [2019-10-13 19:34:33,524 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 9 [2019-10-13 19:34:33,834 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 8 [2019-10-13 19:34:34,004 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 8 [2019-10-13 19:34:34,190 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 1 [2019-10-13 19:34:34,341 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 22 [2019-10-13 19:34:34,496 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 22 [2019-10-13 19:34:34,657 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 22 [2019-10-13 19:34:34,819 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1 [2019-10-13 19:34:34,967 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 22 [2019-10-13 19:34:35,152 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 1 [2019-10-13 19:34:35,475 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 11 [2019-10-13 19:34:35,670 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 1 [2019-10-13 19:34:35,977 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 11 [2019-10-13 19:34:36,151 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 22 [2019-10-13 19:34:36,168 INFO L443 ceAbstractionStarter]: For program point L634(lines 611 635) no Hoare annotation was computed. [2019-10-13 19:34:36,169 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_freeFINAL(lines 587 642) no Hoare annotation was computed. [2019-10-13 19:34:36,169 INFO L443 ceAbstractionStarter]: For program point L618(lines 618 622) no Hoare annotation was computed. [2019-10-13 19:34:36,169 INFO L443 ceAbstractionStarter]: For program point L618-1(lines 618 622) no Hoare annotation was computed. [2019-10-13 19:34:36,169 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_freeEXIT(lines 587 642) no Hoare annotation was computed. [2019-10-13 19:34:36,169 INFO L443 ceAbstractionStarter]: For program point L613(line 613) no Hoare annotation was computed. [2019-10-13 19:34:36,169 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_freeENTRY(lines 587 642) no Hoare annotation was computed. [2019-10-13 19:34:36,169 INFO L443 ceAbstractionStarter]: For program point L612-2(lines 612 633) no Hoare annotation was computed. [2019-10-13 19:34:36,170 INFO L443 ceAbstractionStarter]: For program point L670(line 670) no Hoare annotation was computed. [2019-10-13 19:34:36,170 INFO L443 ceAbstractionStarter]: For program point L669-2(lines 669 694) no Hoare annotation was computed. [2019-10-13 19:34:36,170 INFO L443 ceAbstractionStarter]: For program point L695(lines 668 696) no Hoare annotation was computed. [2019-10-13 19:34:36,170 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_resetFINAL(lines 643 702) no Hoare annotation was computed. [2019-10-13 19:34:36,170 INFO L443 ceAbstractionStarter]: For program point L688(line 688) no Hoare annotation was computed. [2019-10-13 19:34:36,170 INFO L443 ceAbstractionStarter]: For program point L688-1(line 688) no Hoare annotation was computed. [2019-10-13 19:34:36,170 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_resetENTRY(lines 643 702) no Hoare annotation was computed. [2019-10-13 19:34:36,171 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_resetEXIT(lines 643 702) no Hoare annotation was computed. [2019-10-13 19:34:36,171 INFO L443 ceAbstractionStarter]: For program point L675(lines 675 679) no Hoare annotation was computed. [2019-10-13 19:34:36,171 INFO L443 ceAbstractionStarter]: For program point L675-1(lines 675 679) no Hoare annotation was computed. [2019-10-13 19:34:36,171 INFO L446 ceAbstractionStarter]: At program point select_helpersFINAL(lines 246 252) the Hoare annotation is: true [2019-10-13 19:34:36,171 INFO L443 ceAbstractionStarter]: For program point select_helpersEXIT(lines 246 252) no Hoare annotation was computed. [2019-10-13 19:34:36,171 INFO L443 ceAbstractionStarter]: For program point valid_productEXIT(lines 253 261) no Hoare annotation was computed. [2019-10-13 19:34:36,172 INFO L446 ceAbstractionStarter]: At program point valid_productENTRY(lines 253 261) the Hoare annotation is: true [2019-10-13 19:34:36,172 INFO L443 ceAbstractionStarter]: For program point valid_productFINAL(lines 253 261) no Hoare annotation was computed. [2019-10-13 19:34:36,172 INFO L443 ceAbstractionStarter]: For program point L130-1(lines 130 137) no Hoare annotation was computed. [2019-10-13 19:34:36,172 INFO L443 ceAbstractionStarter]: For program point L128(line 128) no Hoare annotation was computed. [2019-10-13 19:34:36,172 INFO L439 ceAbstractionStarter]: At program point L127(line 127) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 |old(~systemActive~0)|) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|) (= ~pumpRunning~0 0))) [2019-10-13 19:34:36,172 INFO L439 ceAbstractionStarter]: At program point L126(line 126) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 |old(~systemActive~0)|) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|) (= ~pumpRunning~0 0))) [2019-10-13 19:34:36,173 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 120 142) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 |old(~systemActive~0)|) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|) (= ~pumpRunning~0 0))) [2019-10-13 19:34:36,173 INFO L439 ceAbstractionStarter]: At program point L126-1(line 126) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 |old(~systemActive~0)|) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|) (= ~pumpRunning~0 0))) [2019-10-13 19:34:36,173 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 120 142) no Hoare annotation was computed. [2019-10-13 19:34:36,173 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 120 142) no Hoare annotation was computed. [2019-10-13 19:34:36,173 INFO L439 ceAbstractionStarter]: At program point L132(line 132) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= main_~tmp~0 ~systemActive~0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 |old(~systemActive~0)|) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2019-10-13 19:34:36,174 INFO L439 ceAbstractionStarter]: At program point L132-1(line 132) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= main_~tmp~0 ~systemActive~0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 |old(~systemActive~0)|) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2019-10-13 19:34:36,174 INFO L443 ceAbstractionStarter]: For program point L130(lines 130 137) no Hoare annotation was computed. [2019-10-13 19:34:36,174 INFO L443 ceAbstractionStarter]: For program point Specification2EXIT(lines 75 98) no Hoare annotation was computed. [2019-10-13 19:34:36,174 INFO L443 ceAbstractionStarter]: For program point L93(line 93) no Hoare annotation was computed. [2019-10-13 19:34:36,174 INFO L443 ceAbstractionStarter]: For program point Specification2ENTRY(lines 75 98) no Hoare annotation was computed. [2019-10-13 19:34:36,174 INFO L443 ceAbstractionStarter]: For program point L92(line 92) no Hoare annotation was computed. [2019-10-13 19:34:36,175 INFO L443 ceAbstractionStarter]: For program point Specification2FINAL(lines 75 98) no Hoare annotation was computed. [2019-10-13 19:34:36,175 INFO L443 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2019-10-13 19:34:36,175 INFO L443 ceAbstractionStarter]: For program point L90(line 90) no Hoare annotation was computed. [2019-10-13 19:34:36,175 INFO L443 ceAbstractionStarter]: For program point L89(line 89) no Hoare annotation was computed. [2019-10-13 19:34:36,175 INFO L443 ceAbstractionStarter]: For program point L88(line 88) no Hoare annotation was computed. [2019-10-13 19:34:36,175 INFO L443 ceAbstractionStarter]: For program point L87(line 87) no Hoare annotation was computed. [2019-10-13 19:34:36,175 INFO L443 ceAbstractionStarter]: For program point L86(line 86) no Hoare annotation was computed. [2019-10-13 19:34:36,175 INFO L443 ceAbstractionStarter]: For program point L85(line 85) no Hoare annotation was computed. [2019-10-13 19:34:36,176 INFO L443 ceAbstractionStarter]: For program point L84(line 84) no Hoare annotation was computed. [2019-10-13 19:34:36,176 INFO L443 ceAbstractionStarter]: For program point L83(line 83) no Hoare annotation was computed. [2019-10-13 19:34:36,176 INFO L443 ceAbstractionStarter]: For program point L82(line 82) no Hoare annotation was computed. [2019-10-13 19:34:36,176 INFO L443 ceAbstractionStarter]: For program point L81(line 81) no Hoare annotation was computed. [2019-10-13 19:34:36,176 INFO L443 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2019-10-13 19:34:36,176 INFO L443 ceAbstractionStarter]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 330 336) no Hoare annotation was computed. [2019-10-13 19:34:36,176 INFO L446 ceAbstractionStarter]: At program point processEnvironment__wrappee__methaneQueryFINAL(lines 330 336) the Hoare annotation is: true [2019-10-13 19:34:36,176 INFO L443 ceAbstractionStarter]: For program point stopSystemEXIT(lines 452 466) no Hoare annotation was computed. [2019-10-13 19:34:36,177 INFO L439 ceAbstractionStarter]: At program point L458(line 458) the Hoare annotation is: (not (= 0 |old(~pumpRunning~0)|)) [2019-10-13 19:34:36,177 INFO L443 ceAbstractionStarter]: For program point L456(lines 456 462) no Hoare annotation was computed. [2019-10-13 19:34:36,177 INFO L439 ceAbstractionStarter]: At program point stopSystemENTRY(lines 452 466) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~systemActive~0 |old(~systemActive~0)|) (= ~pumpRunning~0 0))) [2019-10-13 19:34:36,177 INFO L443 ceAbstractionStarter]: For program point stopSystemFINAL(lines 452 466) no Hoare annotation was computed. [2019-10-13 19:34:36,177 INFO L443 ceAbstractionStarter]: For program point activatePump__wrappee__baseEXIT(lines 363 370) no Hoare annotation was computed. [2019-10-13 19:34:36,177 INFO L443 ceAbstractionStarter]: For program point activatePump__wrappee__baseENTRY(lines 363 370) no Hoare annotation was computed. [2019-10-13 19:34:36,177 INFO L443 ceAbstractionStarter]: For program point activatePump__wrappee__baseFINAL(lines 363 370) no Hoare annotation was computed. [2019-10-13 19:34:36,178 INFO L443 ceAbstractionStarter]: For program point isPumpRunningEXIT(lines 407 415) no Hoare annotation was computed. [2019-10-13 19:34:36,178 INFO L446 ceAbstractionStarter]: At program point isPumpRunningENTRY(lines 407 415) the Hoare annotation is: true [2019-10-13 19:34:36,178 INFO L443 ceAbstractionStarter]: For program point isPumpRunningFINAL(lines 407 415) no Hoare annotation was computed. [2019-10-13 19:34:36,178 INFO L443 ceAbstractionStarter]: For program point L446(line 446) no Hoare annotation was computed. [2019-10-13 19:34:36,178 INFO L443 ceAbstractionStarter]: For program point L446-1(line 446) no Hoare annotation was computed. [2019-10-13 19:34:36,178 INFO L443 ceAbstractionStarter]: For program point L435(lines 435 443) no Hoare annotation was computed. [2019-10-13 19:34:36,178 INFO L443 ceAbstractionStarter]: For program point L435-2(lines 435 443) no Hoare annotation was computed. [2019-10-13 19:34:36,178 INFO L443 ceAbstractionStarter]: For program point printPumpFINAL(lines 416 451) no Hoare annotation was computed. [2019-10-13 19:34:36,179 INFO L443 ceAbstractionStarter]: For program point L423(lines 423 431) no Hoare annotation was computed. [2019-10-13 19:34:36,179 INFO L443 ceAbstractionStarter]: For program point printPumpENTRY(lines 416 451) no Hoare annotation was computed. [2019-10-13 19:34:36,179 INFO L443 ceAbstractionStarter]: For program point L423-2(lines 423 431) no Hoare annotation was computed. [2019-10-13 19:34:36,179 INFO L443 ceAbstractionStarter]: For program point printPumpEXIT(lines 416 451) no Hoare annotation was computed. [2019-10-13 19:34:36,179 INFO L443 ceAbstractionStarter]: For program point select_featuresEXIT(lines 239 245) no Hoare annotation was computed. [2019-10-13 19:34:36,179 INFO L446 ceAbstractionStarter]: At program point select_featuresFINAL(lines 239 245) the Hoare annotation is: true [2019-10-13 19:34:36,179 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_setENTRY(lines 541 586) no Hoare annotation was computed. [2019-10-13 19:34:36,180 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_setEXIT(lines 541 586) no Hoare annotation was computed. [2019-10-13 19:34:36,180 INFO L443 ceAbstractionStarter]: For program point __utac__exception__cf_handler_setFINAL(lines 541 586) no Hoare annotation was computed. [2019-10-13 19:34:36,180 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argtypeFINAL(lines 854 899) no Hoare annotation was computed. [2019-10-13 19:34:36,180 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argtypeENTRY(lines 854 899) no Hoare annotation was computed. [2019-10-13 19:34:36,180 INFO L443 ceAbstractionStarter]: For program point L874(lines 874 881) no Hoare annotation was computed. [2019-10-13 19:34:36,180 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argtypeEXIT(lines 854 899) no Hoare annotation was computed. [2019-10-13 19:34:36,180 INFO L443 ceAbstractionStarter]: For program point L868(lines 868 888) no Hoare annotation was computed. [2019-10-13 19:34:36,180 INFO L443 ceAbstractionStarter]: For program point L868-1(lines 868 888) no Hoare annotation was computed. [2019-10-13 19:34:36,181 INFO L439 ceAbstractionStarter]: At program point runTestENTRY(lines 107 116) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 |old(~systemActive~0)|) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|) (= ~pumpRunning~0 0))) [2019-10-13 19:34:36,181 INFO L443 ceAbstractionStarter]: For program point runTestEXIT(lines 107 116) no Hoare annotation was computed. [2019-10-13 19:34:36,181 INFO L443 ceAbstractionStarter]: For program point runTestFINAL(lines 107 116) no Hoare annotation was computed. [2019-10-13 19:34:36,181 INFO L446 ceAbstractionStarter]: At program point L401(line 401) the Hoare annotation is: true [2019-10-13 19:34:36,181 INFO L443 ceAbstractionStarter]: For program point L401-1(line 401) no Hoare annotation was computed. [2019-10-13 19:34:36,181 INFO L446 ceAbstractionStarter]: At program point isMethaneAlarmENTRY(lines 396 406) the Hoare annotation is: true [2019-10-13 19:34:36,181 INFO L443 ceAbstractionStarter]: For program point isMethaneAlarmEXIT(lines 396 406) no Hoare annotation was computed. [2019-10-13 19:34:36,182 INFO L443 ceAbstractionStarter]: For program point isMethaneAlarmFINAL(lines 396 406) no Hoare annotation was computed. [2019-10-13 19:34:36,182 INFO L446 ceAbstractionStarter]: At program point deactivatePumpENTRY(lines 388 395) the Hoare annotation is: true [2019-10-13 19:34:36,182 INFO L443 ceAbstractionStarter]: For program point deactivatePumpEXIT(lines 388 395) no Hoare annotation was computed. [2019-10-13 19:34:36,182 INFO L443 ceAbstractionStarter]: For program point deactivatePumpFINAL(lines 388 395) no Hoare annotation was computed. [2019-10-13 19:34:36,182 INFO L439 ceAbstractionStarter]: At program point L352(line 352) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0)) [2019-10-13 19:34:36,182 INFO L439 ceAbstractionStarter]: At program point L348(line 348) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0)) [2019-10-13 19:34:36,182 INFO L443 ceAbstractionStarter]: For program point L346(lines 346 354) no Hoare annotation was computed. [2019-10-13 19:34:36,182 INFO L439 ceAbstractionStarter]: At program point L344(line 344) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0)) [2019-10-13 19:34:36,183 INFO L443 ceAbstractionStarter]: For program point L344-1(line 344) no Hoare annotation was computed. [2019-10-13 19:34:36,183 INFO L443 ceAbstractionStarter]: For program point processEnvironmentEXIT(lines 338 362) no Hoare annotation was computed. [2019-10-13 19:34:36,183 INFO L443 ceAbstractionStarter]: For program point L342(lines 342 359) no Hoare annotation was computed. [2019-10-13 19:34:36,183 INFO L439 ceAbstractionStarter]: At program point processEnvironmentENTRY(lines 338 362) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0) (= ~pumpRunning~0 0)) [2019-10-13 19:34:36,183 INFO L439 ceAbstractionStarter]: At program point L357(line 357) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0) (= ~pumpRunning~0 0)) [2019-10-13 19:34:36,183 INFO L443 ceAbstractionStarter]: For program point L357-1(lines 338 362) no Hoare annotation was computed. [2019-10-13 19:34:36,183 INFO L439 ceAbstractionStarter]: At program point L514-1(lines 508 521) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2019-10-13 19:34:36,183 INFO L439 ceAbstractionStarter]: At program point testENTRY(lines 468 533) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~systemActive~0 |old(~systemActive~0)|) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|) (= ~pumpRunning~0 0))) [2019-10-13 19:34:36,184 INFO L443 ceAbstractionStarter]: For program point L479(lines 478 525) no Hoare annotation was computed. [2019-10-13 19:34:36,184 INFO L443 ceAbstractionStarter]: For program point L508(lines 508 521) no Hoare annotation was computed. [2019-10-13 19:34:36,184 INFO L443 ceAbstractionStarter]: For program point testFINAL(lines 468 533) no Hoare annotation was computed. [2019-10-13 19:34:36,184 INFO L439 ceAbstractionStarter]: At program point L500(line 500) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2019-10-13 19:34:36,184 INFO L443 ceAbstractionStarter]: For program point L498(lines 498 504) no Hoare annotation was computed. [2019-10-13 19:34:36,184 INFO L443 ceAbstractionStarter]: For program point L498-1(lines 498 504) no Hoare annotation was computed. [2019-10-13 19:34:36,184 INFO L439 ceAbstractionStarter]: At program point L523(lines 478 525) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2019-10-13 19:34:36,185 INFO L439 ceAbstractionStarter]: At program point L490(line 490) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2019-10-13 19:34:36,185 INFO L443 ceAbstractionStarter]: For program point L488(lines 488 494) no Hoare annotation was computed. [2019-10-13 19:34:36,185 INFO L443 ceAbstractionStarter]: For program point L488-1(lines 488 494) no Hoare annotation was computed. [2019-10-13 19:34:36,185 INFO L443 ceAbstractionStarter]: For program point L480(lines 480 484) no Hoare annotation was computed. [2019-10-13 19:34:36,185 INFO L439 ceAbstractionStarter]: At program point L526(lines 477 527) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2019-10-13 19:34:36,185 INFO L439 ceAbstractionStarter]: At program point L516(line 516) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 test_~splverifierCounter~0) (= ~pumpRunning~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2019-10-13 19:34:36,185 INFO L443 ceAbstractionStarter]: For program point testEXIT(lines 468 533) no Hoare annotation was computed. [2019-10-13 19:34:36,186 INFO L443 ceAbstractionStarter]: For program point L514(lines 514 520) no Hoare annotation was computed. [2019-10-13 19:34:36,186 INFO L443 ceAbstractionStarter]: For program point L828(lines 828 835) no Hoare annotation was computed. [2019-10-13 19:34:36,186 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argENTRY(lines 808 853) no Hoare annotation was computed. [2019-10-13 19:34:36,186 INFO L443 ceAbstractionStarter]: For program point L822(lines 822 842) no Hoare annotation was computed. [2019-10-13 19:34:36,186 INFO L443 ceAbstractionStarter]: For program point L822-1(lines 822 842) no Hoare annotation was computed. [2019-10-13 19:34:36,186 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argEXIT(lines 808 853) no Hoare annotation was computed. [2019-10-13 19:34:36,186 INFO L443 ceAbstractionStarter]: For program point __utac__get_this_argFINAL(lines 808 853) no Hoare annotation was computed. [2019-10-13 19:34:36,186 INFO L443 ceAbstractionStarter]: For program point L203(lines 203 211) no Hoare annotation was computed. [2019-10-13 19:34:36,187 INFO L443 ceAbstractionStarter]: For program point L203-2(lines 203 211) no Hoare annotation was computed. [2019-10-13 19:34:36,187 INFO L443 ceAbstractionStarter]: For program point printEnvironmentEXIT(lines 195 217) no Hoare annotation was computed. [2019-10-13 19:34:36,187 INFO L443 ceAbstractionStarter]: For program point printEnvironmentENTRY(lines 195 217) no Hoare annotation was computed. [2019-10-13 19:34:36,187 INFO L443 ceAbstractionStarter]: For program point printEnvironmentFINAL(lines 195 217) no Hoare annotation was computed. [2019-10-13 19:34:36,187 INFO L443 ceAbstractionStarter]: For program point select_oneENTRY(lines 229 238) no Hoare annotation was computed. [2019-10-13 19:34:36,187 INFO L443 ceAbstractionStarter]: For program point select_oneFINAL(lines 229 238) no Hoare annotation was computed. [2019-10-13 19:34:36,187 INFO L443 ceAbstractionStarter]: For program point select_oneEXIT(lines 229 238) no Hoare annotation was computed. [2019-10-13 19:34:36,188 INFO L443 ceAbstractionStarter]: For program point L770-1(line 770) no Hoare annotation was computed. [2019-10-13 19:34:36,188 INFO L443 ceAbstractionStarter]: For program point __utac__error_stack_mgtENTRY(lines 705 807) no Hoare annotation was computed. [2019-10-13 19:34:36,188 INFO L443 ceAbstractionStarter]: For program point L729(lines 729 733) no Hoare annotation was computed. [2019-10-13 19:34:36,188 INFO L443 ceAbstractionStarter]: For program point L793(lines 793 804) no Hoare annotation was computed. [2019-10-13 19:34:36,188 INFO L443 ceAbstractionStarter]: For program point L756(lines 756 760) no Hoare annotation was computed. [2019-10-13 19:34:36,188 INFO L443 ceAbstractionStarter]: For program point L754-2(lines 754 774) no Hoare annotation was computed. [2019-10-13 19:34:36,188 INFO L443 ceAbstractionStarter]: For program point L775(lines 753 776) no Hoare annotation was computed. [2019-10-13 19:34:36,188 INFO L443 ceAbstractionStarter]: For program point __utac__error_stack_mgtFINAL(lines 705 807) no Hoare annotation was computed. [2019-10-13 19:34:36,189 INFO L443 ceAbstractionStarter]: For program point L734(lines 734 750) no Hoare annotation was computed. [2019-10-13 19:34:36,189 INFO L443 ceAbstractionStarter]: For program point L794(lines 794 801) no Hoare annotation was computed. [2019-10-13 19:34:36,189 INFO L443 ceAbstractionStarter]: For program point L755(lines 754 774) no Hoare annotation was computed. [2019-10-13 19:34:36,189 INFO L443 ceAbstractionStarter]: For program point L786(line 786) no Hoare annotation was computed. [2019-10-13 19:34:36,189 INFO L443 ceAbstractionStarter]: For program point __utac__error_stack_mgtEXIT(lines 705 807) no Hoare annotation was computed. [2019-10-13 19:34:36,189 INFO L443 ceAbstractionStarter]: For program point L786-1(line 786) no Hoare annotation was computed. [2019-10-13 19:34:36,189 INFO L443 ceAbstractionStarter]: For program point L751(lines 751 792) no Hoare annotation was computed. [2019-10-13 19:34:36,189 INFO L443 ceAbstractionStarter]: For program point L770(line 770) no Hoare annotation was computed. [2019-10-13 19:34:36,190 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:34:36,190 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string59.offset| |old(#t~string59.offset)|) (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |#t~string68.offset| |old(#t~string68.offset)|) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |#t~string66.offset| |old(#t~string66.offset)|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string57.base| |old(#t~string57.base)|) (= |#t~string55.offset| |old(#t~string55.offset)|) (= |#t~string28.offset| |old(#t~string28.offset)|) (= |#t~string57.offset| |old(#t~string57.offset)|) (= ~head~0.offset |old(~head~0.offset)|) (= |#t~string24.base| |old(#t~string24.base)|) (= |#t~string58.offset| |old(#t~string58.offset)|) (= |#t~string18.offset| |old(#t~string18.offset)|) (= ~head~0.base |old(~head~0.base)|) (= |#t~string64.base| |old(#t~string64.base)|) (= |#t~string8.base| |old(#t~string8.base)|) (= |#t~string66.base| |old(#t~string66.base)|) (= |#t~string2.base| |old(#t~string2.base)|) (= |#t~string28.base| |old(#t~string28.base)|) (= |#t~string67.offset| |old(#t~string67.offset)|) (= |#t~string60.base| |old(#t~string60.base)|) (= |#t~string8.offset| |old(#t~string8.offset)|) (= |#t~string32.base| |old(#t~string32.base)|) (= |#t~string55.base| |old(#t~string55.base)|) (= |#t~string65.base| |old(#t~string65.base)|) (= |#t~string30.offset| |old(#t~string30.offset)|) (= |#t~string22.base| |old(#t~string22.base)|) (= |#t~string30.base| |old(#t~string30.base)|) (= |#t~string2.offset| |old(#t~string2.offset)|) (= |#t~string10.offset| |old(#t~string10.offset)|) (= |#t~string59.base| |old(#t~string59.base)|) (= ~systemActive~0 |old(~systemActive~0)|) (= |#t~string56.offset| |old(#t~string56.offset)|) (= |#t~string60.offset| |old(#t~string60.offset)|) (= |#t~string58.base| |old(#t~string58.base)|) (= |#t~string22.offset| |old(#t~string22.offset)|) (= |#t~string69.offset| |old(#t~string69.offset)|) (= |#t~string20.offset| |old(#t~string20.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string32.offset| |old(#t~string32.offset)|) (= |#t~string56.base| |old(#t~string56.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string18.base| |old(#t~string18.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string65.offset| |old(#t~string65.offset)|) (= |old(#length)| |#length|) (= |#t~string20.base| |old(#t~string20.base)|) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|) (= |#t~string24.offset| |old(#t~string24.offset)|) (= |#t~string10.base| |old(#t~string10.base)|) (= |#t~string67.base| |old(#t~string67.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#t~string26.base| |old(#t~string26.base)|) (= |#t~string26.offset| |old(#t~string26.offset)|) (= |#valid| |old(#valid)|) (= |#t~string68.base| |old(#t~string68.base)|) (= |#t~string64.offset| |old(#t~string64.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~cleanupTimeShifts~0 |old(~cleanupTimeShifts~0)|) (= |#t~string69.base| |old(#t~string69.base)|)) [2019-10-13 19:34:36,190 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:34:36,190 INFO L443 ceAbstractionStarter]: For program point L382(line 382) no Hoare annotation was computed. [2019-10-13 19:34:36,190 INFO L443 ceAbstractionStarter]: For program point L382-1(lines 371 387) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point activatePumpEXIT(lines 371 387) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point L378(lines 378 384) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point activatePumpENTRY(lines 371 387) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point L376(line 376) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point L376-1(line 376) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point getWaterLevelENTRY(lines 218 226) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point getWaterLevelFINAL(lines 218 226) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point getWaterLevelEXIT(lines 218 226) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point L178-1(lines 174 185) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L439 ceAbstractionStarter]: At program point changeMethaneLevelENTRY(lines 174 185) the Hoare annotation is: (or (not (= 0 ~pumpRunning~0)) (= ~methaneLevelCritical~0 |old(~methaneLevelCritical~0)|)) [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point changeMethaneLevelEXIT(lines 174 185) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point ##fun~int~X~int~TO~intEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point ##fun~int~X~int~TO~intENTRY(line -1) no Hoare annotation was computed. [2019-10-13 19:34:36,191 INFO L443 ceAbstractionStarter]: For program point ##fun~int~X~int~TO~intFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:34:36,192 INFO L439 ceAbstractionStarter]: At program point L319(line 319) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~pumpRunning~0 0) (not (= 0 ~systemActive~0)))) [2019-10-13 19:34:36,192 INFO L439 ceAbstractionStarter]: At program point L317(lines 317 323) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~pumpRunning~0 0))) [2019-10-13 19:34:36,192 INFO L439 ceAbstractionStarter]: At program point L312(line 312) the Hoare annotation is: (not (= 0 |old(~pumpRunning~0)|)) [2019-10-13 19:34:36,192 INFO L443 ceAbstractionStarter]: For program point L310(lines 309 328) no Hoare annotation was computed. [2019-10-13 19:34:36,192 INFO L439 ceAbstractionStarter]: At program point timeShiftENTRY(lines 306 329) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= ~pumpRunning~0 0))) [2019-10-13 19:34:36,192 INFO L443 ceAbstractionStarter]: For program point timeShiftEXIT(lines 306 329) no Hoare annotation was computed. [2019-10-13 19:34:36,192 INFO L443 ceAbstractionStarter]: For program point timeShiftFINAL(lines 306 329) no Hoare annotation was computed. [2019-10-13 19:34:36,192 INFO L443 ceAbstractionStarter]: For program point cleanupEXIT(lines 42 71) no Hoare annotation was computed. [2019-10-13 19:34:36,192 INFO L443 ceAbstractionStarter]: For program point L63(line 63) no Hoare annotation was computed. [2019-10-13 19:34:36,192 INFO L446 ceAbstractionStarter]: At program point cleanupENTRY(lines 42 71) the Hoare annotation is: true [2019-10-13 19:34:36,193 INFO L443 ceAbstractionStarter]: For program point L56(lines 56 60) no Hoare annotation was computed. [2019-10-13 19:34:36,193 INFO L446 ceAbstractionStarter]: At program point L56-1(lines 56 60) the Hoare annotation is: true [2019-10-13 19:34:36,193 INFO L443 ceAbstractionStarter]: For program point L53(line 53) no Hoare annotation was computed. [2019-10-13 19:34:36,193 INFO L446 ceAbstractionStarter]: At program point L52-2(lines 52 66) the Hoare annotation is: true [2019-10-13 19:34:36,193 INFO L446 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: true [2019-10-13 19:34:36,193 INFO L443 ceAbstractionStarter]: For program point L48-1(line 48) no Hoare annotation was computed. [2019-10-13 19:34:36,193 INFO L446 ceAbstractionStarter]: At program point L67(lines 42 71) the Hoare annotation is: true [2019-10-13 19:34:36,193 INFO L446 ceAbstractionStarter]: At program point isMethaneLevelCriticalENTRY(lines 186 194) the Hoare annotation is: true [2019-10-13 19:34:36,193 INFO L443 ceAbstractionStarter]: For program point isMethaneLevelCriticalFINAL(lines 186 194) no Hoare annotation was computed. [2019-10-13 19:34:36,193 INFO L443 ceAbstractionStarter]: For program point isMethaneLevelCriticalEXIT(lines 186 194) no Hoare annotation was computed. [2019-10-13 19:34:36,193 INFO L446 ceAbstractionStarter]: At program point lowerWaterLevelENTRY(lines 150 161) the Hoare annotation is: true [2019-10-13 19:34:36,193 INFO L443 ceAbstractionStarter]: For program point lowerWaterLevelEXIT(lines 150 161) no Hoare annotation was computed. [2019-10-13 19:34:36,194 INFO L443 ceAbstractionStarter]: For program point L154-1(lines 150 161) no Hoare annotation was computed. [2019-10-13 19:34:36,194 INFO L443 ceAbstractionStarter]: For program point setupEXIT(lines 99 105) no Hoare annotation was computed. [2019-10-13 19:34:36,194 INFO L446 ceAbstractionStarter]: At program point setupFINAL(lines 99 105) the Hoare annotation is: true [2019-10-13 19:34:36,194 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:34:36,194 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= 1 ~systemActive~0) (= 0 ~methaneLevelCritical~0) (= ~pumpRunning~0 0)) [2019-10-13 19:34:36,194 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:34:36,194 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:34:36,194 INFO L443 ceAbstractionStarter]: For program point waterRiseEXIT(lines 162 173) no Hoare annotation was computed. [2019-10-13 19:34:36,194 INFO L443 ceAbstractionStarter]: For program point L166-1(lines 162 173) no Hoare annotation was computed. [2019-10-13 19:34:36,194 INFO L439 ceAbstractionStarter]: At program point waterRiseENTRY(lines 162 173) the Hoare annotation is: (or (not (= 0 ~pumpRunning~0)) (= ~waterLevel~0 |old(~waterLevel~0)|)) [2019-10-13 19:34:36,194 INFO L443 ceAbstractionStarter]: For program point __automaton_failFINAL(lines 291 298) no Hoare annotation was computed. [2019-10-13 19:34:36,194 INFO L446 ceAbstractionStarter]: At program point __automaton_failENTRY(lines 291 298) the Hoare annotation is: true [2019-10-13 19:34:36,195 INFO L443 ceAbstractionStarter]: For program point __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 295) no Hoare annotation was computed. [2019-10-13 19:34:36,195 INFO L443 ceAbstractionStarter]: For program point __automaton_failEXIT(lines 291 298) no Hoare annotation was computed. [2019-10-13 19:34:36,195 INFO L446 ceAbstractionStarter]: At program point __utac_acc__Specification1_spec__1ENTRY(lines 265 289) the Hoare annotation is: true [2019-10-13 19:34:36,195 INFO L443 ceAbstractionStarter]: For program point __utac_acc__Specification1_spec__1EXIT(lines 265 289) no Hoare annotation was computed. [2019-10-13 19:34:36,195 INFO L439 ceAbstractionStarter]: At program point L279(line 279) the Hoare annotation is: (not (= 0 ~pumpRunning~0)) [2019-10-13 19:34:36,195 INFO L443 ceAbstractionStarter]: For program point L277(lines 277 283) no Hoare annotation was computed. [2019-10-13 19:34:36,195 INFO L439 ceAbstractionStarter]: At program point L275(line 275) the Hoare annotation is: (or (not (= 0 ~pumpRunning~0)) (not (= ~methaneLevelCritical~0 0))) [2019-10-13 19:34:36,196 INFO L443 ceAbstractionStarter]: For program point L275-1(line 275) no Hoare annotation was computed. [2019-10-13 19:34:36,196 INFO L443 ceAbstractionStarter]: For program point L273(lines 273 286) no Hoare annotation was computed. [2019-10-13 19:34:36,196 INFO L443 ceAbstractionStarter]: For program point L273-1(lines 265 289) no Hoare annotation was computed. [2019-10-13 19:34:36,196 INFO L446 ceAbstractionStarter]: At program point L271(line 271) the Hoare annotation is: true [2019-10-13 19:34:36,196 INFO L443 ceAbstractionStarter]: For program point L271-1(line 271) no Hoare annotation was computed. [2019-10-13 19:34:36,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:34:36 BoogieIcfgContainer [2019-10-13 19:34:36,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:34:36,211 INFO L168 Benchmark]: Toolchain (without parser) took 25107.18 ms. Allocated memory was 138.4 MB in the beginning and 593.5 MB in the end (delta: 455.1 MB). Free memory was 102.0 MB in the beginning and 219.6 MB in the end (delta: -117.6 MB). Peak memory consumption was 476.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:34:36,212 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-13 19:34:36,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.08 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 170.5 MB in the end (delta: -68.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:34:36,214 INFO L168 Benchmark]: Boogie Preprocessor took 107.05 ms. Allocated memory is still 202.4 MB. Free memory was 170.5 MB in the beginning and 166.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:34:36,215 INFO L168 Benchmark]: RCFGBuilder took 1203.76 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 166.4 MB in the beginning and 200.9 MB in the end (delta: -34.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:34:36,215 INFO L168 Benchmark]: TraceAbstraction took 23154.45 ms. Allocated memory was 235.4 MB in the beginning and 593.5 MB in the end (delta: 358.1 MB). Free memory was 200.9 MB in the beginning and 219.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 478.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:34:36,220 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.08 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 170.5 MB in the end (delta: -68.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.05 ms. Allocated memory is still 202.4 MB. Free memory was 170.5 MB in the beginning and 166.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1203.76 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 166.4 MB in the beginning and 200.9 MB in the end (delta: -34.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23154.45 ms. Allocated memory was 235.4 MB in the beginning and 593.5 MB in the end (delta: 358.1 MB). Free memory was 200.9 MB in the beginning and 219.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 478.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 295]: 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 - InvariantResult [Line: 477]: Loop Invariant Derived loop invariant: (!(0 == \old(pumpRunning)) || !(\old(systemActive) == 1)) || !(\old(methaneLevelCritical) == 0) - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 478]: Loop Invariant Derived loop invariant: ((!(0 == \old(pumpRunning)) || (0 == splverifierCounter && pumpRunning == 0)) || !(\old(systemActive) == 1)) || !(\old(methaneLevelCritical) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 217 locations, 1 error locations. Result: SAFE, OverallTime: 23.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.7s, HoareTripleCheckerStatistics: 446 SDtfs, 752 SDslu, 385 SDs, 0 SdLazy, 1883 SolverSat, 517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=375occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 230 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 51 LocationsWithAnnotation, 468 PreInvPairs, 543 NumberOfFragments, 676 HoareAnnotationTreeSize, 468 FomulaSimplifications, 56255 FormulaSimplificationTreeSizeReduction, 2.3s HoareSimplificationTime, 51 FomulaSimplificationsInter, 16892 FormulaSimplificationTreeSizeReductionInter, 5.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 73654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...