Building systems in proof assistants is challenging for many reasons. Such systems must tolerate changes gracefully: definitions may be optimized for performance, new theorems may be added, and the proof assistant itself may change how tactics work. Proof assistants are also highly expressive; engineers must ensure that their specifications do not accidentally allow for undesirable behavior. Furthermore, large-scale developments often depend on good tactic performance, requiring developers to reason about low-level performance costs.

To help address these challenges, the Proof Engineering (PE) project is collecting best practices and building techniques and tools for developing large systems in the demanding and foundational context of proof assistants.


Aug 2019 Paper in ASE 2019.

May 2019 Paper in ITP 2019.

Nov 2018 Won a research award from Facebook.

May 2018 Paper in ISSTA 2018.

Feb 2018 Paper in ICSE-Demo 2018.

Nov 2017 Papers in ASE 2017 and CPP 2018.

May 2017 Site goes live.


Current Projects


Proof Engineering is an international collaboration between researchers at University of Washington (UW), Yale-NUS College (Yale-NUS), The University of Texas at Austin (UT), and Cornell University (CU). Many volunteers have helped out on PE projects; we're very grateful for their contributions! Folks currently working on PE include: