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fix linear projection

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This commit is contained in:
Valentin Promies 2025-08-28 12:52:36 +02:00
parent d05961a021
commit 3a7df119be
1 changed files with 6 additions and 10 deletions
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16
src/nlsat/nlsat_explain.cpp
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@ -1287,7 +1287,6 @@ namespace nlsat {
bool lower_inf = true, upper_inf = true;
scoped_anum lower(m_am), upper(m_am);
polynomial_ref p_lower(m_pm), p_upper(m_pm);
unsigned i_lower = UINT_MAX, i_upper = UINT_MAX;
scoped_anum_vector & roots = m_roots_tmp;
polynomial_ref p(m_pm);
@ -1317,7 +1316,6 @@ namespace nlsat {
// roots[i] == x_val
ps_equal.push_back(p);
p_lower = p;
i_lower = i+1;
break; // TODO: choose the best among multiple section polynomials?
}
else if (s < 0) {
@ -1327,7 +1325,6 @@ namespace nlsat {
upper_inf = false;
m_am.set(upper, roots[i]);
p_upper = p;
i_upper = i + 1;
}
}
// in any case, roots[i-1] might provide a lower bound if it exists
@ -1338,7 +1335,6 @@ namespace nlsat {
lower_inf = false;
m_am.set(lower, roots[i-1]);
p_lower = p;
i_lower = i;
}
}
}
@ -1354,7 +1350,7 @@ namespace nlsat {
rational bound;
m_am.to_rational(x_val, bound);
p_lower = m_pm.mk_polynomial(x);
p_lower = p_lower - bound;
p_lower = denominator(bound)*p_lower - numerator(bound);
}
add_root_literal(atom::ROOT_EQ, x, 1, p_lower);
// make sure bounding poly is at the back of the vector
@ -1369,9 +1365,9 @@ namespace nlsat {
rational new_bound;
m_am.to_rational(between, new_bound);
p_lower = m_pm.mk_polynomial(x);
p_lower = p_lower - new_bound;
p_lower = denominator(new_bound)*p_lower - numerator(new_bound);
}
add_root_literal((approximate || m_full_dimensional) ? atom::ROOT_GE : atom::ROOT_GT, x, 1, p_lower);
add_root_literal((/*approximate ||*/ m_full_dimensional) ? atom::ROOT_GE : atom::ROOT_GT, x, 1, p_lower);
// make sure bounding poly is at the back of the vector
ps_below.push_back(p_lower);
}
@ -1383,11 +1379,11 @@ namespace nlsat {
rational new_bound;
m_am.to_rational(between, new_bound);
p_upper = m_pm.mk_polynomial(x);
p_upper = p_upper - new_bound;
p_upper = denominator(new_bound)*p_upper - numerator(new_bound);
}
add_root_literal((approximate || m_full_dimensional) ? atom::ROOT_LE : atom::ROOT_LT, x, 1, p_upper);
add_root_literal((/*approximate ||*/ m_full_dimensional) ? atom::ROOT_LE : atom::ROOT_LT, x, 1, p_upper);
// make sure bounding poly is at the back of the vector
ps_below.push_back(p_upper);
ps_above.push_back(p_upper);
}
}