COPYING

   1 CVC4 is copyright (C) 2009, 2010, 2011 the ACSys research group at the
   2 Courant Institute for Mathematical Sciences, New York University.
   3 All rights reserved.
   4
   5 CVC4 is open-source; distribution is under the terms of the modified BSD
   6 license.  However, certain builds of CVC4 link against GPLed libraries,
   7 and therefore the use of these builds is restricted in non-open-source
   8 projects.  See below for a discussion of CLN and how to ensure you have
   9 a build that doesn't link against GPLed libraries.
  10
  11 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT OWNERS AND CONTRIBUTORS
  12 ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  13 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  14 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  15 OWNERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  16 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  17 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  18 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  19 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  20 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  21 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  22
  23 -- Morgan Deters <mdeters@cs.nyu.edu>  Fri, 04 Feb 2011 14:56:41 -0500
  24
  25 CVC4 incorporates MiniSat code, excluded from the above copyright.
  26 See src/sat/minisat.  Its copyright:
  27
  28   MiniSat -- Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson
  29              Copyright (c) 2007-2010  Niklas Sorensson
  30
  31   Permission is hereby granted, free of charge, to any person obtaining a
  32   copy of this software and associated documentation files (the
  33   "Software"), to deal in the Software without restriction, including
  34   without limitation the rights to use, copy, modify, merge, publish,
  35   distribute, sublicense, and/or sell copies of the Software, and to
  36   permit persons to whom the Software is furnished to do so, subject to
  37   the following conditions:
  38
  39   The above copyright notice and this permission notice shall be included
  40   in all copies or substantial portions of the Software.
  41
  42   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  43   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  44   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  45   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  46   LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  47   OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  48   WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  49
  50 CVC4 incorporates the script "autogen.sh", excluded from the above copyright.
  51 See autogen.sh.  Its copyright:
  52
  53   Copyright (c) 2005-2009 United States Government as represented by
  54   the U.S. Army Research Laboratory.
  55
  56   Redistribution and use in source and binary forms, with or without
  57   modification, are permitted provided that the following conditions
  58   are met:
  59
  60   1. Redistributions of source code must retain the above copyright
  61   notice, this list of conditions and the following disclaimer.
  62
  63   2. Redistributions in binary form must reproduce the above
  64   copyright notice, this list of conditions and the following
  65   disclaimer in the documentation and/or other materials provided
  66   with the distribution.
  67
  68   3. The name of the author may not be used to endorse or promote
  69   products derived from this software without specific prior written
  70   permission.
  71
  72   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  73   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  74   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  75   ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  76   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  77   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  78   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  79   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  80   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  81   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  82   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  83
  84 CVC4 incorporates the script "doxygen.am", excluded from the above copyright.
  85 See config/doxygen.am.  Its copyright:
  86
  87   Copyright (C) 2004 Oren Ben-Kiki
  88   This file is distributed under the same terms as the Automake macro files.
  89
  90 CVC4 incorporates the m4 macro file "pkg.m4", excluded from the above
  91 copyright.  See config/pkg.m4.  Its copyright:
  92
  93   Copyright (c) 2004 Scott James Remnant <scott@netsplit.com>.
  94
  95   This program is free software; you can redistribute it and/or modify
  96   it under the terms of the GNU General Public License as published by
  97   the Free Software Foundation; either version 2 of the License, or
  98   (at your option) any later version.
  99
 100   This program is distributed in the hope that it will be useful, but
 101   WITHOUT ANY WARRANTY; without even the implied warranty of
 102   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 103   General Public License for more details.
 104
 105   You should have received a copy of the GNU General Public License
 106   along with this program; if not, write to the Free Software
 107   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 108
 109   As a special exception to the GNU General Public License, if you
 110   distribute this file as part of a program that contains a
 111   configuration script generated by Autoconf, you may include it under
 112   the same distribution terms that you use for the rest of that program.
 113
 114 CVC4 incorporates the m4 macro file "ax_tls.m4", excluded from the above
 115 copyright and downloaded from
 116 http://www.gnu.org/software/autoconf-archive/ax_tls.html.
 117 See config/ax_tls.m4.  Its copyright:
 118
 119   Copyright (c) 2008 Alan Woodland <ajw05@aber.ac.uk>
 120   Copyright (c) 2010 Diego Elio Pettenò <flameeyes@gmail.com>
 121
 122   This program is free software: you can redistribute it and/or modify it
 123   under the terms of the GNU General Public License as published by the
 124   Free Software Foundation, either version 3 of the License, or (at your
 125   option) any later version.
 126
 127   This program is distributed in the hope that it will be useful, but
 128   WITHOUT ANY WARRANTY; without even the implied warranty of
 129   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 130   Public License for more details.
 131
 132   You should have received a copy of the GNU General Public License along
 133   with this program. If not, see <http://www.gnu.org/licenses/>.
 134
 135   As a special exception, the respective Autoconf Macro's copyright owner
 136   gives unlimited permission to copy, distribute and modify the configure
 137   scripts that are the output of Autoconf when processing the Macro. You
 138   need not follow the terms of the GNU General Public License when using
 139   or distributing such scripts, even though portions of the text of the
 140   Macro appear in them. The GNU General Public License (GPL) does govern
 141   all other use of the material that constitutes the Autoconf Macro.
 142
 143   This special exception to the GPL applies to versions of the Autoconf
 144   Macro released by the Autoconf Archive. When you make and distribute a
 145   modified version of the Autoconf Macro, you may extend this special
 146   exception to the GPL to apply to your modified version as well.
 147
 148 CVC4 incorporates code from ANTLR3, excluded from the above copyright.
 149 See http://www.antlr.org/, and the files src/parser/bounded_token_buffer.h,
 150 src/parser/bounded_token_buffer.cpp, and src/parser/antlr_input_imports.cpp.
 151 Their copyright:
 152
 153   [The "BSD licence"]
 154   Copyright (c) 2005-2009 Jim Idle, Temporal Wave LLC
 155   http://www.temporal-wave.com
 156   http://www.linkedin.com/in/jimidle
 157
 158   All rights reserved.
 159
 160   Redistribution and use in source and binary forms, with or without
 161   modification, are permitted provided that the following conditions
 162   are met:
 163   1. Redistributions of source code must retain the above copyright
 164      notice, this list of conditions and the following disclaimer.
 165   2. Redistributions in binary form must reproduce the above copyright
 166      notice, this list of conditions and the following disclaimer in the
 167      documentation and/or other materials provided with the distribution.
 168   3. The name of the author may not be used to endorse or promote products
 169      derived from this software without specific prior written permission.
 170
 171   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 172   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 173   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 174   IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 175   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 176   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 177   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 178   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 179   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 180   THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 181
 182 Certain builds of CVC4 link against a GPLed library, CLN, the Class Library
 183 for Numbers, available here:
 184
 185   http://www.ginac.de/CLN/
 186
 187 Please be advised that as this class library is covered under the GPL, the
 188 combined work, CVC4+CLN, is also covered under the GPL and cannot be used
 189 by proprietary software projects.  For the full text of the GPL, please
 190 consult the CLN website.  CVC4 does not require CLN; it can be built against
 191 libgmp, the GNU Multiple Precision Arithmetic Library, which is covered by
 192 the more permissive LGPL.  To ensure that CLN is not used in the build,
 193 configure CVC4 with "--without-cln".