Koharu Saeki


2026

Recent work has substantially accelerated proof search in interactive theorem provers by integrating large language models, for both Lean and Coq.The natural language inference (NLI) counterpart lacks an analogous infrastructure: the behavior of dedicated DTT-based provers such as wani, inside the Japanese NLI system lightblue, is observable today only through verbose textual logs. This opacity blocks ML-acceleration efforts such as Neural Wani that need to know where the search spends its time and why it fails.We present a profiling and visualization tool for wani, implemented as a web-based component of the lightblue development environment, that exposes the proof search through a four-panel dashboard, Search Tree, Flame Graph, Rule Statistics, and Failure Analysis, each making one aspect of prover behavior directly inspectable.The tool provides the observability that ML-acceleration research in NLI currently needs but cannot easily obtain.It is released as open source software and provided as a Docker image.