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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-10-25 10:42:11 -07:00
parent 64dd4e1c83
commit 14c42c1d74
1 changed files with 9 additions and 5 deletions
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12
src/nlsat/nlsat_solver.cpp
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@ -649,13 +649,13 @@ namespace nlsat {
} }
bool_var mk_root_atom(atom::kind k, var x, unsigned i, poly * p) { bool_var mk_root_atom(atom::kind k, var x, unsigned i, poly * p) {
SASSERT(i > 0);
SASSERT(x >= max_var(p));
SASSERT(k == atom::ROOT_LT || k == atom::ROOT_GT || k == atom::ROOT_EQ || k == atom::ROOT_LE || k == atom::ROOT_GE);
polynomial_ref p1(m_pm), uniq_p(m_pm); polynomial_ref p1(m_pm), uniq_p(m_pm);
p1 = m_pm.flip_sign_if_lm_neg(p); // flipping the sign of the polynomial will not change its roots. p1 = m_pm.flip_sign_if_lm_neg(p); // flipping the sign of the polynomial will not change its roots.
uniq_p = m_cache.mk_unique(p1); uniq_p = m_cache.mk_unique(p1);
TRACE("nlsat_solver", tout << p1 << " " << uniq_p << "\n";); TRACE("nlsat_solver", tout << x << " " << p1 << " " << uniq_p << "\n";);
SASSERT(i > 0);
SASSERT(x >= max_var(p));
SASSERT(k == atom::ROOT_LT || k == atom::ROOT_GT || k == atom::ROOT_EQ || k == atom::ROOT_LE || k == atom::ROOT_GE);
void * mem = m_allocator.allocate(sizeof(root_atom)); void * mem = m_allocator.allocate(sizeof(root_atom));
root_atom * new_atom = new (mem) root_atom(k, x, i, uniq_p); root_atom * new_atom = new (mem) root_atom(k, x, i, uniq_p);
@ -804,8 +804,12 @@ namespace nlsat {
} }
else if (a->is_root_atom()) { else if (a->is_root_atom()) {
root_atom& r = *to_root_atom(a); root_atom& r = *to_root_atom(a);
if (r.x() >= max_var(r.p())) {
// permutation may be reverted after check completes,
// but then root atoms are not used in lemmas.
bv = checker.mk_root_atom(r.get_kind(), r.x(), r.i(), r.p()); bv = checker.mk_root_atom(r.get_kind(), r.x(), r.i(), r.p());
} }
}
else { else {
UNREACHABLE(); UNREACHABLE();
} }