mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-08-26 13:06:05 +00:00
Code Activity

Don't call assign_eh for internal constraints

Browse source
This commit is contained in:
Jakob Rath 2022-11-28 18:43:19 +01:00
parent c1f9a26f09
commit 0c44391b9e
3 changed files with 22 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

10
src/math/polysat/constraint_manager.cpp
View file

@ -311,17 +311,17 @@ namespace polysat {
// addition does not overflow in (b*q) + r; for now expressed as: r <= bq+r
// b ≠ 0 ==> r < b
// b = 0 ==> q = -1
s.add_eq(a, b * q + r);
s.add_umul_noovfl(b, q);
s.add_clause(eq(b * q + r - a), false);
s.add_clause(~umul_ovfl(b, q), false);
// r <= b*q+r
// { apply equivalence: p <= q <=> q-p <= -p-1 }
// b*q <= -r-1
s.add_ule(b*q, -r-1);
s.add_clause(ule(b*q, -r-1), false);
#if 0
// b*q <= b*q+r
// { apply equivalence: p <= q <=> q-p <= -p-1 }
// r <= - b*q - 1
s.add_ule(r, -b*q-1); // redundant, but may help propagation
s.add_clause(ule(r, -b*q-1), false); // redundant, but may help propagation
#endif
auto c_eq = eq(b);
@ -347,7 +347,7 @@ namespace polysat {
pdd r = m.mk_var(s.add_var(sz));
m_dedup.op_constraint_expr.insert(args, r.var());
s.assign_eh(mk_op_constraint(op, p, q, r), null_dependency);
s.add_clause(mk_op_constraint(op, p, q, r), false);
return r;
}