Cibai: An abstract interpretation-based static analyzer for modular analysis and verification of Java classes. We introduce Cibai a generic static analyzer based on abstract interpretation for the modular analysis and verification of Java classes. We present the abstract semantics and the underlying abstract domain, a combination of an aliasing analysis and octagons. We discuss some implementation issues, and we compare Cibai with similar tools, showing how Cibai achieves a higher level of automation and precision while having comparable performances.