#! /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 || exit 1

set -e

cat >automaton <<EOF
HOA: v1
States: 4
Start: 0
AP: 3 "a" "b" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
--BODY--
State: 0
[0] 1
State: 1
[1] 2
[2&!1] 2
State: 2 {0}
[1] 2
[0&1] 1
[1&2] 3
State: 3
[t] 3
--END--
EOF

cat >expected <<EOF
HOA: v1
States: 3
Start: 0
AP: 3 "a" "b" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc deterministic
--BODY--
State: 0
[0&!1&!2] 1
State: 1
[!0&1&!2] 2
[!0&!1&2] 2
State: 2 {0}
[!0&1&!2] 2
--END--
EOF

cat >expected-simpl <<EOF
HOA: v1
States: 3
Start: 0
AP: 3 "a" "b" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc deterministic
--BODY--
State: 0
[0] 1
State: 1
[1 | 2] 2
State: 2 {0}
[1] 2
--END--
EOF

run 0 autfilt -H --exclusive-ap=a,b,c --exclusive-ap=d,e \
    automaton >out
cat out
diff out expected

run 0 autfilt -H --exclusive-ap=a,b,c --exclusive-ap=d,e \
    --simplify-exclusive-ap automaton >out2
cat out2
diff out2 expected-simpl

cat >automaton <<EOF
HOA: v1
States: 4
Start: 0
AP: 2 "a" "b"
acc-name: Buchi
Acceptance: 1 Inf(0)
--BODY--
State: 0
[0] 1
State: 1
[1] 2
[0&!1] 2
State: 2 {0}
[1] 2
[0&1] 1
[1&0] 3
State: 3
[t] 3
--END--
EOF

cat >expected <<EOF
HOA: v1
States: 3
Start: 0
AP: 2 "a" "b"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc deterministic
--BODY--
State: 0
[0&!1] 1
State: 1
[!0&1] 2
[0&!1] 2
State: 2 {0}
[!0&1] 2
--END--
EOF

cat >expected-simpl <<EOF
HOA: v1
States: 3
Start: 0
AP: 2 "a" "b"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc deterministic
--BODY--
State: 0
[0] 1
State: 1
[0 | 1] 2
State: 2 {0}
[1] 2
--END--
EOF

run 0 autfilt -H --exclusive-ap=a,b,c --exclusive-ap=d,e \
    automaton >out
cat out
diff out expected

run 0 autfilt -H --exclusive-ap=a,b,c --exclusive-ap=d,e \
    --simplify-exclusive-ap automaton >out2
cat out2
diff out2 expected-simpl


# Example from the paper
test "6,50,14" = `ltl2tgba -B -f 'F(Ga | (GFb <-> GFc))' --stats='%s,%t,%e'`
test "6,24,12" = `ltl2tgba -B -f 'F(Ga | (GFb <-> GFc))' |
                  autfilt --exclusive-ap=a,b,c --stats='%s,%t,%e'`
test "4,18,8" = `ltl2tgba -B -f 'F(Ga | (GFb <-> GFc))' |
   autfilt --small --exclusive-ap=a,b,c --stats='%s,%t,%e' --ap=3`
# The final automaton has 3 atomic propositions before
# simplifications, but only 2 after that.
ltl2tgba -B -f 'F(Ga | (GFb <-> GFc))' |
  autfilt --small --exclusive-ap=a,b,c --simplify-ex --ap=3 > out
test "4,17,8" = `autfilt out --stats='%s,%t,%e' --ap=2`


# Issue #363.
ltl2tgba 'a U b' |
  autfilt --exclusive-ap=a,b,c --simplify-exclusive-ap > out
test "2,8,3" = `autfilt out --stats='%s,%t,%e' --ap=2`