The performance of software process is related with the software process models and the resource allocations of software processes. If a correct model is impertinently allocated with the limited resource of a software organization, as a result, the performance of the software process may fail to reach the actual requirement, followed by delay, over-cost, and even failure. The existing approach based on process automata isn't fit for the analysis of instantiation model. A model with only correct structure can't ensure a successful enactment, because it lacks schedule information. This paper presents an approach to verify the process instantiation model with time and resource constraints, which is an extension of existing s-TRISO/ML process modeling language. This paper also presents an approach to convert from an s-TRISO/ML model into timed automata and explains converting algorithm. Finally, making use of UPPAAL to carry out the function verification on the converted timed automata, we can get a reasonable instantiation model to provide guidance for the actual process development.