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Fix random_graph() not to generate dead states.

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This is actually the third time I fix random_graph().  On
2007-02-06 I changed the function not to generated dead states,
but in a way that made it non-deterministic.  On 2010-01-20 I made
the function deterministic again, but it started to generate dead
states as a side effect.  This time, I'm making sure that dead
states won't come again with a test-case that we should have had
from the beginning.

* src/tgbaalgos/randomgraph.cc (random_graph): Add an extra
indirection array, state_randomizer[], so that we can reorder
states indices after a random selection without actually changing
the value of the indices used by unreachable_states and
nodes_to_process.
* src/tgbatest/randtgba.test: New file.
* src/tgbatest/Makefile.am: Add randtgba.test.
This commit is contained in:
Alexandre Duret-Lutz 2010-02-23 17:20:59 +01:00
parent 72b7deec12
commit 2183276008
4 changed files with 72 additions and 9 deletions
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3
src/tgbatest/Makefile.am
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@ -1,4 +1,4 @@
## Copyright (C) 2009 Laboratoire de Recherche et Développement
## Copyright (C) 2009, 2010 Laboratoire de Recherche et Développement
## de l'Epita (LRDE).
## Copyright (C) 2003, 2004, 2005, 2006 Laboratoire d'Informatique de
## Paris 6 (LIP6), département Systèmes Répartis Coopératifs (SRC),
@ -91,6 +91,7 @@ TESTS = \
reduccmp.test \
reductgba.test \
scc.test \
randtgba.test \
emptchk.test \
emptchke.test \
dfs.test \