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  1. ; ; ; ; ; ; (, Springer Nature Switzerland)
    Platzer, Andre; Rozier, Kristin Yvonne; Pradella, Matteo; Rossi, Matteo (Ed.)
    Abstract Great minds have long dreamed of creating machines that can function as general-purpose problem solvers. Satisfiability modulo theories (SMT) has emerged as one pragmatic realization of this dream, providing significant expressive power and automation. This tutorial is a beginner’s guide to SMT. It includes an overview of SMT and its formal foundations, a catalog of the main theories used in SMT solvers, and illustrations of how to obtain models and proofs. Throughout the tutorial, examples and exercises are provided as hands-on activities for the reader. They can be run using either Python or the SMT-LIB language, using either thecvc5or the Z3 SMT solver. 
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  2. ; ; ; (, Springer Nature Switzerland)
    Platzer, André; Rozier, Kristin Yvonne; Pradella, Matteo; Rossi, Matteo (Ed.)
    Abstract Stable infiniteness, strong finite witnessability, and smoothness are model-theoretic properties relevant to theory combination in satisfiability modulo theories. Theories that are strongly finitely witnessable and smooth are calledstrongly politeand can be effectively combined with other theories. Toledo, Zohar, and Barrett conjectured that stably infinite and strongly finitely witnessable theories are smooth and therefore strongly polite. They called counterexamples to this conjectureunicorn theories, as their existence seemed unlikely. We prove that, indeed, unicorns do not exist. We also prove versions of the Löwenheim–Skolem theorem and the Łoś–Vaught test for many-sorted logic. 
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