A system for use in analyzing software code using a symbolic-execution technique. The system includes a hardware-based processing unit, and a non-transitory computer-readable storage component including a (i) concurrency-analysis module, (ii) a lightweight-analysis module, and (iii) a heavyweight-analysis module. The concurrency-analysis module, when executed by the hardware-based processing unit receives initial code and generates a potential interference matrix using the initial code. The lightweight-analysis module, when executed by the hardware-based processing unit, generates a final interface matrix using the potential interference matrix. The heavyweight-analysis module, when executed by the hardware-based processing unit, generates one or more test cases using the potential interference matrix. Various aspects of the present technology includes a non-transitory computer-readable storage devices configured to perform any of the operations described, algorithms to perform any of the operations described, and the methods or processes including the operations performed by these systems, storage devices, and algorithms.