Satisfiability modulo theory (SMT) consists of determining the satisfiability of logical formulas. It can reason in various formal theories, e.g. in linear integer or real arithmetic, first-order logic, or logics of arrays. An SMT solver is a program that implements the corresponding algorithms to automatically determine whether a logical formula is satisfiable.

The SMTLIB initiative provides a common input and output format based on S-expressions for interacting with SMT solvers. We present ScalaSMT, a Scala library that provides an abstraction over the SMTLIB format. The library brings consistency and type safety to the textual and dynamically typed world of SMTLIB solver interaction.

ScalaSMT relies on the SMTLIB input/output capabilities of the solvers and consequently provides access to numerous popular SMTLIB-compliant solvers such as Z3,CVC4, Yices, MathSat5} or SMTinterpol.

ScalaSMT is easily extendable (SMTLIB commands and theories can be added) and configurable (SMTLIB-compliant solvers can be added). ScalaSMT fills a gap in the Scala library landscape by providing support for powerful logical reasoning algorithms.