#!/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


# Issue #315
ltlcross -f FGa \
  'ltl2tgba -G -D %f | autfilt --complement >%O' \
  'ltl2tgba -G -D %f | autfilt --complement | autfilt --simplify-acceptance >%O'


cat >325 <<EOF
HOA: v1
States: 1
Start: 0
AP: 2 "a" "b"
acc-name: Rabin 3
Acceptance: 6 (Fin(0) & Inf(1)) | (Fin(2) & Inf(3)) | (Fin(4) & Inf(5))
properties: trans-labels explicit-labels trans-acc complete
properties: deterministic
--BODY--
State: 0
[!0&!1] 0 {0 4}
[!0&1] 0 {0 3 4}
[0&!1] 0 {2 5}
[0&1] 0 {1 2 5}
--END--
EOF

autfilt --simplify-acceptance 325 > 325s
exp='3 Fin(0) | (Fin(1) & Inf(2))'
test "$exp" = "`autfilt --stats='%a %g' 325s`"

# This automaton used to cause some issue at some point, because
# simplify_acceptance would simplify the acceptance condition without
# removing the unnecessary set from the resulting automaton.
cat >frenkin <<EOF
HOA: v1
States: 1
Start: 0
AP: 2 "a" "b"
Acceptance: 4 Fin(0) & (Fin(1) | (Inf(2)&Inf(3)))
properties: trans-labels explicit-labels trans-acc complete
properties: deterministic stutter-invariant
--BODY--
State: 0
[!0&1] 0
[!0&!1] 0 {1 3}
[0&1] 0 {0 1 2}
[0&!1] 0 {0 1 2 3}
--END--
EOF
autcross --language-preserved 'autfilt --simplify-acc' -F frenkin
test 1,4,1 = "`autfilt --simplify-acc frenkin --stats=%s,%e,%a`"