FFb∪d∪f∪mRESIDUAL FAULTSMutationFb∪d∪fData flowFb∪dFunctionalDecisionFbFaults revealedtbstbetdstdetfstfetmstmeTesting effort (t)Saturation regionRbRdRfRmReliabilityRmRfRdRbFunctionalDecisionData flowMutationtbstbetdtdsetfstfetmstmeTesting effortTrue reliabilityEstimated reliabilityFault found and removed at these pointsReliabilitytxGrowth regionTesting efforttx: Start of saturation region for testing technique xstx: End of saturation region for testing technique xestxeSaturationregionTesting effortSuccessFailureObservedinter-failure timesUsefulinter-failure timesFailureUseless effortas coverage didnot improveCoverage improvedCoverage not improvedNot to scaleSUBSYSTEM RELIABILITY ESTIMATIONMM..1.2DependencyanalysisSubsystemReliability estimationSubsystem reliabilityMkTest adequacyinformationR1R2R...kModule testingComponentreliability estimationM: Module or componentR: Component reliability
