Copyright (C) 2003-2009 by the Board of Trustees of Leland Stanford Junior
University, New York University, and the University of Iowa, hereafter
designated as the Copyright Owners.

All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
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* Neither the names of the Copyright Owners nor the names of any contributors
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT OWNERS AND CONTRIBUTORS ''AS IS'' AND ANY
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Note:

The following files contain code whose copyright does not belong to the
Copyright Owners.  However, separate copyright notices in these files give
express permission to copy, use, modify, sell, or distribute the code.  Please
see the copyright notices in the individual files for details.

<pre>
src/include/fdstream.h
src/include/hash_map.h
src/include/hash_fun.h
src/include/hash_set.h
src/include/hash_table.h
src/sat/minisat_varorder.h
src/sat/minisat_solver.cpp
src/sat/minisat_heap.h
src/sat/minisat_types.h
src/sat/minisat_solver.h
src/sat/minisat_global.h
</pre>
This copy of CVC3 is also configured to use the SAT solver zchaff whose
copyright is owned by Princeton University and is more restrictive.

Specifically, it may be used for internal, noncommercial, research purposes
only.  See the copyright notice in the following files for more information.
To build CVC3 without these files, please delete them and then run:
<pre>
   ./configure --disable-zchaff
   make
</pre>

<pre>
src/sat/xchaff_base.h
src/sat/xchaff_dbase.h
src/sat/xchaff_solver.h
src/sat/xchaff_utils.h
src/sat/xchaff_dbase.cpp
src/sat/xchaff_solver.cpp
src/sat/xchaff_utils.cpp
</pre>
