4. A non-transitory computer program storage product for creating a system configuration data set, the computer program product comprising: a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising: creating a hierarchical tree structure with a plurality of nodes where each node represents a system property and includes at least one of an attribute and a value; receiving a set of expressions representing a set of system test goals, wherein the set of expressions includes at least one preference expression that defines at least one of testing knowledge, testing experience, and testing beliefs; creating a set of system test data utilizing the hierarchical tree structure combined with the expressions; receiving at least one bias value and at least preference value; associating the at least one bias value with the at least one preference expression; and associating the at least one priority value to the at least one preference value.
4. A non-transitory computer program storage product for creating a system configuration data set, the computer program product comprising: a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising: creating a hierarchical tree structure with a plurality of nodes where each node represents a system property and includes at least one of an attribute and a value; receiving a set of expressions representing a set of system test goals, wherein the set of expressions includes at least one preference expression that defines at least one of testing knowledge, testing experience, and testing beliefs; creating a set of system test data utilizing the hierarchical tree structure combined with the expressions; receiving at least one bias value and at least preference value; associating the at least one bias value with the at least one preference expression; and associating the at least one priority value to the at least one preference value. 10. The non-transitory computer program storage product according to claim 4 , wherein: the system property is one of abstract and concrete.