We have invented an axiomatic based theory as a methodology for software development. Our methodology has been used world wide for program generation based on intentional user requirement. Using such methodology we have developed a tool for program validation for diagnosis purposes.

The tool is based on Lyee theory and sets of rules that interpret the logical semantics of the old program and verify it for design errors or possible security aspects. We explain the theory and also show some practical results reflect our practices on actual business project to show the effectiveness of our theory as it consumes less efforts and time to diagnose a program design and logical errors.