LISP: Revolutionizing API Testing with LLM-Powered Input Space Partitioning A technical deep dive into the ICSE ’25 research breakthrough transforming how developers test library APIs What is LISP? LISP (LLM based Input Space Partitioning) represents a paradigm shift in API testing methodology. This innovative approach leverages Large Language Models (LLMs) to analyze library API source code and intelligently partition input spaces based on code semantics and domain knowledge. Core Capabilities Semantic Code Analysis: LLMs directly parse API implementation code Intelligent Input Partitioning: Automatically identifies critical input boundaries Knowledge Integration: Combines programming expertise with common sense reasoning Research Validation: Peer-reviewed at …