“…Over the past few years, several variability modeling techniques have been developed that are aimed to support variability management during product derivation, e.g., FODA [31], featureRSEB [24], Riebisch et al [45], Forfamel [2], RequiLine [37], Cardinality-Based Feature Modeling (CBFM) [18], von der Maßen and Lichter [38], Halmans and Pohl [25], ConIPF [28], COVAMOF [48], CONSUL/ PureϻVariants [13,44], GEARS [35], Koalish [3], OVM [43], VSL [9], van der Hoek et al [26], and Webber and Gomaa [23]. These techniques aim at representing the variability in a product family, in such a way that software engineers can manage variability more easily during product derivation.…”