The experience of an ACL2 user generally includes many failed proof attempts. A key to successful use of the ACL2 prover is the effective use of tools to debug those failures. We focus on changes made after ACL2 Version 8.5: the improved break-rewrite utility and the new utility, with-brr-data.

翻译：ACL2用户的体验通常包含大量失败的证明尝试。成功使用ACL2证明器的关键在于有效运用工具来调试这些失败。我们聚焦于ACL2 8.5版本之后所做出的改进：改良后的break-rewrite工具以及新增的with-brr-data工具。