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Add additional equality in theory_fpa

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Christoph M. Wintersteiger 2021-09-14 13:27:32 +00:00
parent f1acc4b78a
commit 8e69f76784
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1 changed files with 1 additions and 5 deletions
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6
src/smt/theory_fpa.cpp
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@ -454,13 +454,9 @@ namespace smt {
expr * args[] = { bv_val_a->get_arg(0), bv_val_a->get_arg(1), bv_val_a->get_arg(2) }; expr * args[] = { bv_val_a->get_arg(0), bv_val_a->get_arg(1), bv_val_a->get_arg(2) };
cc_args = m_bv_util.mk_concat(3, args); cc_args = m_bv_util.mk_concat(3, args);
c = m.mk_eq(wrapped, cc_args); c = m.mk_eq(wrapped, cc_args);
// NB code review: #5454 exposes a bug in fpa_solver that
// could be latent here as well. It needs also the equality
// n == bv_val_e to be asserted such that whenever something is assigned th
// bit-vector value cc_args it is equated with n
// I don't see another way this constraint would be enforced.
assert_cnstr(c); assert_cnstr(c);
assert_cnstr(mk_side_conditions()); assert_cnstr(mk_side_conditions());
assert_cnstr(m.mk_eq(n, bv_val_e));
} }
else { else {
expr_ref wu(m); expr_ref wu(m);