FznTini is described in Universal Booleanization of Constraint Models, Jinbo Huang, Proceedings of the 14th International Conference on Principles and Practice of Constraint Programming (CP-08).
You can download a Linux executable of FznTini. Examples problems in MiniZinc and the MiniZinc-to-FlatZinc translator are available in the G12 MiniZinc Distribution.
(Note that the Zinc family of languages have changed since the completion of the work described in the above paper. The FznTini executable provided here supports FlatZinc 1.1.)
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