The ELDARICA Horn Solver

This paper presents the ELDARICA version 2 model checker. Over the last years we have been developing and maintaining ELDARICA as a state-of-the-art solver for Horn clauses over integer arithmetic. In the version 2, we have extended the solver to support also algebraic data types and bit-vectors, theories that are commonly applied in verification, but currently unsupported by most Horn solvers. This paper describes the high-level structure of the tool and the interface that it provides to other applications. We also report on an evaluation of the tool. While some of the techniques in ELDARICA have been documented in research papers over the last years, this is the first tool paper describing ELDARICA in its entirety.