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ltl2tgba_fm: Fix incorrect simplification of promises for M

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The bug was reported by Joachim Klein.

* src/tgbaalgos/ltl2tgba_fm.cc (translate_dict::register_a_variable):
Reduce P(a M b) to P(a & b), not to P(a).
* src/tgbatest/ltlcross.test: Test Joachim's formula.
* src/tgbatest/ltl2ta.test: Adjust some expected values.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2014-08-20 20:52:18 +02:00
parent e7dc62e3c8
commit 795c2f1720
4 changed files with 99 additions and 44 deletions
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14
src/tgbatest/ltlcross.test
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@ -1,6 +1,6 @@
#!/bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) 2012, 2013 Laboratoire de Recherche et
# Copyright (C) 2012, 2013, 2014 Laboratoire de Recherche et
# Développement de l'Epita (LRDE).
#
# This file is part of Spot, a model checking library.
@ -23,7 +23,13 @@ set -e
ltl2tgba=../ltl2tgba
../../bin/randltl -n 100 p1 p2 p3 p4 p5 p6 --tree-size 5..15 |
(
# A bug reported by Joachim Klein
echo 'G(Fa & ((a M b) U ((c U !d) M d)))'
# Random formulas
../../bin/randltl -n 100 p1 p2 p3 p4 p5 p6 --tree-size 5..15
) |
../../bin/ltlcross --products=2 \
"$ltl2tgba -t -l %f > %T" \
"$ltl2tgba -t -l -R3b -r4 %f > %T" \
@ -47,7 +53,3 @@ ltl2tgba=../ltl2tgba
"$ltl2tgba -t -taa -r4 %f > %T" \
"$ltl2tgba -t -taa -r4 -c %f > %T" \
"$ltl2tgba -t -taa -r4 -R3 -RDS %f > %T"
# Disabled because too slow, and too big automata produced.
# "$ltl2tgba -t -lo -r4 %f > %T"
# "$ltl2tgba -t -lo -R3b -r4 %f > %T" \