This paper presents a systematic mapping study examining research trends in applying artificial intelligence (AI) to formal methods (FM). It examines how AI can contribute to FM and suggests future research directions, targeting research papers published between 2019 and 2023. Four major databases were searched, and 189 studies were analyzed using inclusion/exclusion criteria. The analysis revealed that while AI utilization is prominent in theorem proving, other FM subfields remain relatively under-researched. Current research on AI-based FM is in its infancy, lacking theoretical foundations, standard benchmarks, and case studies. The lack of shared learning datasets and standard benchmarks was also identified as a challenge.