Abstract — A set of mutation operators is “sufficient ” if it can be used for most purposes to replace a larger set. We describe in detail an experimental procedure for determining a set of sufficient C language mutation operators. We also describe several statistical analyses that determine sufficient subsets with respect to several different criteria, based on standard techniques for variable reduction. We have begun to carry out our experimental procedure on seven standard C subject programs. We present preliminary results that indicate that the procedure and analyses are feasible and yield useful information. I
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