| Popis: |
This paper concerns the exploration of an approach that deals with formal program derivation in contrast to the traditional approach that begins with a formal specification, derive different refinements of that specification until generating the final correct program code. Hence, we use a rigorous theoretical framework which is based on the concept of relative correctness; the property of a program to be more correct than another program with respect to a specification. Program derivation process by relative correctness presents several advantages as for example deriving reliable software. In fact, for most software products, as for products in general, perfect correctness is not necessary; very often, adequate reliability threshold is sufficient. Our aim is to continue experimenting with the discipline of reliable program derivation by correctness enhancement by conducting an analytical and empirical study of this approach as a proof of concept. Then, to analyze the results and compare them (give feedback) to what is predicted and proposed by the analytical approach and decide on the usability of the approach and/or adjust/complete it. Finally, we propose a mechanism that helps and guides developer in the program derivation process using relative correctness. |
