Retrenchment (computing)

In computing, "retrenchment" is a formalism used in the context of software development and formal verification, particularly when dealing with changes in system requirements or specifications. It refers to a process of incrementally refining system specifications while managing the introduction of changes or the relaxation of certain requirements. Retrenchment is particularly useful in situations where it is not feasible to achieve a completely formal refinement due to various constraints, such as the complexity of the system, cost, or time considerations.