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Improve a reduction rule for "a M b".

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* src/ltlvisit/reduce.cc (reduce_visitor): Always reduce "a M b"
to "a & b" if "a" is a pure eventual formula, remove the
constraint on "b".
* src/ltltest/reduccmp.test: Add two tests.
This commit is contained in:
Alexandre Duret-Lutz 2011-03-17 11:55:56 +01:00
parent b51b7ab8b9
commit 1878bfd0fc
3 changed files with 18 additions and 5 deletions
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8
src/ltltest/reduccmp.test
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@ -1,5 +1,5 @@
#! /bin/sh
# Copyright (C) 2009, 2010 Laboratoire de Recherche et Développement
# Copyright (C) 2009, 2010, 2011 Laboratoire de Recherche et Developpement
# de l'Epita (LRDE).
# Copyright (C) 2004, 2006 Laboratoire d'Informatique de Paris 6 (LIP6),
# département Systèmes Répartis Coopératifs (SRC), Université Pierre
@ -153,6 +153,10 @@ for x in ../reduccmp ../reductaustr; do
run 0 $x 'a M ((a & b) M c)' '(a & b)M c'
run 0 $x '(a & b) M (a R c)' '(a & b)M c'
run 0 $x '(a & b) M (a M c)' '(a & b)M c'
# Eventuality and universality class reductions
run 0 $x 'Fa M b' 'Fa & b'
run 0 $x 'GFa M b' 'GFa & b'
;;
esac
@ -161,7 +165,7 @@ for x in ../reduccmp ../reductaustr; do
run 0 $x 'a M ((a&b) R c)' 'a M ((a&b) R c)' #not reduced.
run 0 $x '(a&b) W (a U c)' '(a&b) W (a U c)' #not reduced.
# Eventuality and universality class reduction
# Eventuality and universality class reductions
run 0 $x 'FFa' 'Fa'
run 0 $x 'FGFa' 'GFa'
run 0 $x 'b U Fa' 'Fa'