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simplify: remove an incorect SERE simplification

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* src/ltlvisit/simplify.cc, doc/tl/tl.tex: Remove the rule.
* src/ltltest/reduc0.test: Add a regression test.
* src/ltltest/reduccmp.test: Adjust test cases for its removal.
* NEWS: Mention it.
This commit is contained in:
Alexandre Duret-Lutz 2014-12-04 22:50:43 +01:00
parent 88da1ad84d
commit 1156866630
5 changed files with 26 additions and 31 deletions
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8
src/ltltest/reduc0.test
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@ -1,5 +1,5 @@
#! /bin/sh
# Copyright (C) 2013 Laboratoire de Recherche et
# Copyright (C) 2013, 2014 Laboratoire de Recherche et
# Développement de l'Epita (LRDE).
#
# This file is part of Spot, a model checking library.
@ -24,3 +24,9 @@ set -e
run 0 ../reduc 0 'XFa & FXa' 'XFa'
run 0 ../reduc 0 '(Xf W 0) | X(f W 0)' 'XGf'
# Two incorrect reductions. Those used
# to reduce respectively to a W (b && !b) and !a M (b || !b).
# But both are wrong. The reduction {a*;r} = a W r seems only
# valid if r has a non-empty language.
run 0 ../reduc 0 '{a[*];{b && !b}}'
run 0 ../reduc 0 '!{a[*];{b && !b}}'