VBSAC: a value-based static analyzer for C

Static analysis has long prevailed as a promising approach to detect program bugs at an early development process to increase software quality. However, such tools face great challenges to balance the false-positive rate and the false-negative rate in practical use. In this paper, we present VBSAC, a value-based static analyzer for C aiming to improve the precision and recall. In our tool, we employ a pluggable value-based analysis strategy. A memory skeleton recorder is designed to maintain the memory objects as a baseline. While traversing the control flow graph, diverse value-based plug-ins analyze the specific abstract domains and share program information to strengthen the computation. Simultaneously, checkers consume the corresponding analysis results to detect bugs. We also provide a user-friendly web interface to help users audit the bug detection results. Evaluation on two widely-used benchmarks shows that we perform better to state-of-the-art bug detection tools by finding 221-339 more bugs and improving F-Score 9.88%-40.32%.