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port fixes to intblast

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2024-03-09 10:27:12 -08:00
parent dcaacf5e9b
commit 361e04a18e
3 changed files with 20 additions and 5 deletions
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12
src/sat/smt/arith_axioms.cpp
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@ -331,15 +331,17 @@ namespace arith {
expr_ref x(a.mk_mod(_x, a.mk_int(N)), m);
expr_ref y(a.mk_mod(_y, a.mk_int(N)), m);
// 0 <= n < 2^sz
add_clause(mk_literal(a.mk_ge(n, a.mk_int(0))));
add_clause(mk_literal(a.mk_le(n, a.mk_int(N - 1))));
if (a.is_band(n)) {
// 0 <= x&y < 2^sz
// x&y <= x
// x&y <= y
// TODO? x = y => x&y = x
add_clause(mk_literal(a.mk_ge(n, a.mk_int(0))));
add_clause(mk_literal(a.mk_le(n, a.mk_int(N - 1))));
add_clause(mk_literal(a.mk_le(n, x)));
add_clause(mk_literal(a.mk_le(n, y)));
}
@ -537,6 +539,8 @@ namespace arith {
euf::enode* n2 = var2enode(v2);
lpvar w1 = register_theory_var_in_lar_solver(v1);
lpvar w2 = register_theory_var_in_lar_solver(v2);
if (lp().are_equal(w1, w2))
return;
auto cs = lp().add_equality(w1, w2);
add_eq_constraint(cs.first, n1, n2);
add_eq_constraint(cs.second, n1, n2);