The invention concerns a method for performing a run-time simulation of a computer program comprising: extracting said computer program from a first application environment to a second application environment; parsing said computer program to generate a hierarchical representation of said computer program; based on said hierarchical representation, inserting at least one log value generation instruction into said extracted computer program to generate an enhanced computer program; re-injecting said enhanced computer program into said first application environment; executing, in said first application environment, said enhanced computer program; and receiving from said first application environment generated log values and analyzing said values with respect to a hierarchical representation of said computer program.