#!/bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) by the Spot authors, see the AUTHORS file for details.
#
# This file is part of Spot, a model checking library.
#
# Spot is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Spot is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
# License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

. ./defs

set -e

# Formulas from issue #385.

ltl2tgba -G --stats=%s,%f> out <<EOF
GFX((e & XXXa) -> (e & X!d))
G(Gc | Fa | F!G(c | Ge))
Ge | XGF(Ge & X(c & Fd))
G!GXXe -> GF(b & c & Gc)
G!(Gd & (c | Fb))
XF(F(Gc & Xb) -> a)
EOF

# Some of the following are still not optimal.
cat >expected <<EOF
1,GF(!a | !d | !e)
6,G(Fa | (c W (!c & F!e)))
2,Ge | G(Fd & FGe & Fc)
1,F(G(Fb & FGc) | Ge)
4,G(F!d | (!c & G!b))
3,F(GF!c | G!b) | XFa
EOF
diff out expected