Functional test strategies have become very popular for efficiently testing devices online and as a substitute for redundancy-based techniques. Unfortunately, they typically require a significant percentage of the overall testing and validation costs. Consequently, a preliminary and quick evaluation of functional test procedures has become essential to guide functional program development. In this work, we develop a technique for multi-core applications based on analyzing the execution traces generated by the functional program running within a debugger. Given the trace, we first create a graph representing the program data flow, i.e., all reading and writing operations on registers and memory addresses. Then, we manipulate the graph to evaluate whether each data is correctly forwarded to the program termination or a signature point.