Asynchronously communicating program is the program that processes achieve non-blocking concurrency through asynchronous message passing. At present, the verification problem of asynchronously communicating program is usually reduced to vector addition system and its extension model, so it has high complexity and lack of efficient tools. Basic Parallel Processes, as a subclass of vector addition system, whose verification of complexity reachability is NP-complete, can also be used as an important model for verifying concurrent programs. Firstly, improve the Actor communicating system proposed by Osualdo, et al., by reducing it to Basic Parallel Processes. Then, realizing an automatic model checker for basic parallel processes named RABLE. The experimental results show that the verification method is more efficient than the existing tools for a series of program verification problems of asynchronously communicating programs.