spot/src/tgbatest/neverclaimread.test
Alexandre Duret-Lutz 027836f431 neverparse: accept more unparenthesised guards
Also accept guards of the form (a) || !(b) or (a) && !(b).

* src/neverparse/neverclaimscan.ll: Adjust.
* src/tgbatest/neverclaimread.test: Add a test case.
2013-07-26 12:04:45 +02:00

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#!/bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) 2010, 2011, 2012, 2013 Laboratoire de Recherche et
# Développement de l'Epita (LRDE).
#
# 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
cat >input <<EOF
never {
T2_init:
if
:: (1) -> goto T2_init
:: (p1 && p0) -> goto T1
fi;
T1:
if
:: (p1 && (! p0)) -> goto accept_all
:: !(p1) -> goto T1
:: ! (p1) -> goto T2_init
fi;
accept_all:
skip
}
EOF
run 0 ../ltl2tgba -XN input > stdout
cat >expected <<EOF
digraph G {
0 [label="", style=invis, height=0]
0 -> 1
1 [label="T2_init"]
1 -> 1 [label="1\n"]
1 -> 2 [label="p0 & p1\n"]
2 [label="T1"]
2 -> 3 [label="p1 & !p0\n"]
2 -> 2 [label="!p1\n"]
2 -> 1 [label="!p1\n"]
3 [label="accept_all", peripheries=2]
3 -> 3 [label="1\n{Acc[1]}"]
}
EOF
# Sort out some possible inversions in the output.
# (The order is not guaranteed by SPOT.)
sed -e 's/!p0 & p1/p1 \& !p0/g' -e 's/p1 & p0/p0 \& p1/g' stdout \
> tmp_ && mv tmp_ stdout
diff stdout expected
rm input stdout expected
# Same test, but with the newer syntax output since Spin 6.24
cat >input <<EOF
never {
T2_init:
do
:: (1) -> goto T2_init
:: (p1 && p0) -> goto T1
od;
T1:
do
:: atomic { (p1 && (! p0)) -> assert(!(p1 && (! p0))) }
:: !(p1) -> goto T1
:: ! (p1) -> goto T2_init
od;
}
EOF
run 0 ../ltl2tgba -XN input > stdout
cat >expected <<EOF
digraph G {
0 [label="", style=invis, height=0]
0 -> 1
1 [label="T2_init"]
1 -> 1 [label="1\n"]
1 -> 2 [label="p0 & p1\n"]
2 [label="T1"]
2 -> 3 [label="p1 & !p0\n"]
2 -> 2 [label="!p1\n"]
2 -> 1 [label="!p1\n"]
3 [label="accept_all", peripheries=2]
3 -> 3 [label="1\n{Acc[1]}"]
}
EOF
# Sort out some possible inversions in the output.
# (The order is not guaranteed by SPOT.)
sed -e 's/!p0 & p1/p1 \& !p0/g' -e 's/p1 & p0/p0 \& p1/g' stdout \
> tmp_ && mv tmp_ stdout
diff stdout expected
rm input stdout expected
# Unparenthesed disjunction
cat >input <<EOF
never { /* p0 || p1 */
accept_init:
if
:: (p1) && (p0) -> goto accept_all
:: (p1) && !(p0) -> goto accept_all
fi;
accept_all:
skip
}
EOF
run 0 ../ltl2tgba -XN input > stdout
cat >expected <<EOF
digraph G {
0 [label="", style=invis, height=0]
0 -> 1
1 [label="accept_init", peripheries=2]
1 -> 2 [label="p1\n{Acc[1]}"]
2 [label="accept_all", peripheries=2]
2 -> 2 [label="1\n{Acc[1]}"]
}
EOF
diff stdout expected
rm input stdout expected
# Test broken guards in input
cat >input <<EOF
never {
T2_init:
if
:: (1) -> goto T2_init
:: (p1 && ) -> goto T1
fi;
T1:
if
:: (p1 && ! p0)) -> goto accept_all
:: (p1) -> goto T1
fi;
accept_all:
skip
}
EOF
# We used to catch the following error:
# input:5.11: syntax error, unexpected closing parenthesis
# input:5.8-9: missing right operand for "and operator"
# but since the guard parser is more lenient, we just assume
# that "p1 && " is an atomic property.
run 2 ../ltl2tgba -XN input > stdout 2>stderr
cat >expected <<\EOF
input:9.16: syntax error, unexpected $undefined, expecting fi or ':'
EOF
grep input: stderr >> stderrfilt
diff stderrfilt expected
cat >formulae<<EOF
a
FG a
X false
(G a) U X b
(a U b) U (c U d)
true
(Ga && XXXX!a)
"a > b" U "process@foo"
GF("(a + b) == 42" U "process@foo")
EOF
while read f
do
run 0 ../ltl2tgba -b -f "!($f)" > f.tgba
sf=`../../bin/ltlfilt -sf "$f"`
if test -n "$SPIN"; then
# Old spin versions cannot parse formulas such as ((a + b) == 42).
if $SPIN -f "$sf" > f.spin; then
run 0 ../ltl2tgba -E -Pf.tgba -XN f.spin
fi
fi
case $f in
*\"*);;
*)
if test -n "$LTL2BA"; then
$LTL2BA -f "$sf" > f.ltl2ba
run 0 ../ltl2tgba -E -Pf.tgba -XN f.ltl2ba
fi
esac
run 0 ../ltl2tgba -DS -NN -f "$f" > f.spot
# Make sure there is no `!x' occurring in the
# output. Because `x' is usually #define'd, we
# should use `!(x)' in guards.
grep '![^(].*->' f.spot && exit 1
run 0 ../ltl2tgba -E -Pf.tgba -XN f.spot
done <formulae