Use randoop to automatically generate regression tests for the altbuilds dataset and apply them to different providers.
Details are described in this paper: Dietrich, Jens, Tim White, Valerio Terragni, and Behnaz Hassanshahi. "Towards Cross-Build Differential Testing." In 2025 IEEE Conference on Software Testing, Verification and Validation (ICST), pp. 592-596. IEEE, 2025.