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  iZplus (fzn_izplus) -- iZ based solver for MiniZinc Challenge
  Copyright (C) 2012-2019 NTT DATA SEKISUI SYSTEMS CORPORATION.
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* What is iZplus

  iZplus is a FlatZinc solver using iZ-C constraint programming
library which is developed by NTT DATA SEKISUI SYSTEMS CORPORATION.

iZ-C provides :
  * many built-in constraints
  * constraint propagation mechanism
  * simple search strategy

And in iZplus, following algorithms are 'plus'ed.
  * Randomized restarting in search
  * Local search for optimization problem
  * Local search for satisfying problem
  * Variable reordering
  * NG learning

* Author

  Toshimitsu FUJIWARA <t.fujiwara@sekisui.com>
    developer at NTT DATA SEKISUI SYSTEMS CORPORATION

* Acknowledgement

  FlatZinc parser in fzn_izplus is based on 'FlatZinc parser skeleton'
written by Guido Tack. 

  iZ-C is a constraint programming library developed by
NTT DATA SEKISUI SYSTEMS CORPORATION.

   http://www.constraint.org/en/izc_download.html