Inference-Time Code Selection via Symbolic Equivalence Partitioning

Researchers propose Symbolic Equivalence Partitioning, a novel inference-time selection method for code generation that uses symbolic execution and SMT constraints to identify correct solutions without expensive external verifiers. The approach improves accuracy on HumanEval+ by 10.3% and on LiveCodeBench by 17.1% at N=10 without requiring additional LLM inference.