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fix #7252

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2024-06-13 17:52:17 -07:00
parent 35c1cacf44
commit a6b502779b
2 changed files with 15 additions and 7 deletions
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6
src/ast/seq_decl_plugin.cpp
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@ -1164,11 +1164,13 @@ expr* seq_util::rex::mk_loop_proper(expr* r, unsigned lo, unsigned hi)
// avoid creating a loop with both bounds 0
// such an expression is invalid as a loop
// it is BY DEFINITION = epsilon
return mk_epsilon(seq_sort);
r = mk_epsilon(seq_sort);
return r;
}
if (lo == 1 && hi == 1)
if (lo == 1 && hi == 1) {
// do not create a loop unless it actually is a loop
return r;
}
parameter params[2] = { parameter(lo), parameter(hi) };
return m.mk_app(m_fid, OP_RE_LOOP, 2, params, 1, &r);
}