Code Clone Detection Technique Using Program Execution Traces

Code clone is a code fragment that has identical or similar fragments to it in the source code. Many code clone detection techniques and tools have been proposed. However, source code derived by copy-and-paste may be disguised by obfuscation because these techniques detect code clone using only static information such as source code or binary. Therefore, we propose a new clone detection technique, which divides execution trace into a set of phases, and then performs the comparison of those phases based on involved method calls. The experimental result shows that the proposed clone detection technique identified obfuscated and original classes, and an evidence of reusing source code.