A method for the generation of a source code for a computer program for the execution or simulation of a complex process in which a multiplicity of subjects communicate with one another. In this method, the processes are described, the description of the processes is stored in a process file, and with the aid of the process file a source code for a computer program is generated, with a separate source code file being generated for each subject. Through the provision of a source code file for each subject, a complex process may be easily and therefore automatically split into several sub-programs, the source code files, which may be generated automatically. In this way it is possible to generate automatically a computer program for a very complex process. A further benefit of the method according to the invention is that it may be executed after automatic generation, i.e. it may be validated by an execution immediately after generation.