refining set, fuzzy test, set coverage, genetic algorithm, vulnerability analysis, Control engineering systems. Automatic machinery (General), TJ212-225, Systems engineering, TA168

Fuzzy testing is the most effective method for vulnerability mining, which can deal with complex programmes better than other vulnerability mining techniques and has strong scalability. However, in the large-scale vulnerability analysis test, the fuzzy test input sample set faces the challenges of low quality, high repeatability and low availability etc. Therefore, this paper studies the input sample set and proposes heuristic genetic algorithm. By using 0–1 matrix, the genetic algorithm is improved with a consideration of practical problems and the execution path for sample set is selected and compressed through approximation algorithm, thus obtaining a smallest sample set and accelerating the efficiency of fuzzy test. Experimental results show that the proposed method is effective.