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arXiv · 2404.04731

SAT-DIFF: A Tree Diffing Framework Using SAT Solving

Chuqin Geng·Haolin Ye·Yihan Zhang·Brigitte Pientka·Xujie Si
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Abstract

Computing differences between tree-structured data is a critical but challenging problem in software analysis. In this paper, we propose a novel tree diffing approach called SatDiff, which reformulates the structural diffing problem into a MaxSAT problem. By encoding the necessary transformations from the source tree to the target tree, SatDiff generates correct, minimal, and type safe low-level edit scripts with formal guarantees. We then synthesize concise high-level edit scripts by effectively merging low-level edits in the appropriate topological order. Our empirical results demonstrate that SatDiff outperforms existing heuristic-based approaches by a significant margin in terms of conciseness while maintaining a reasonable runtime.

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Chuqin Geng, Haolin Ye, Yihan Zhang, Brigitte Pientka, Xujie Si. 2024-04-06. SAT-DIFF: A Tree Diffing Framework Using SAT Solving. https://arxiv.org/abs/2404.04731

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