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fix #1658 fix #1689

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-06-18 16:41:04 -07:00
parent c3b27903f8
commit 8040eddf65
5 changed files with 105 additions and 83 deletions
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47
src/nlsat/nlsat_explain.cpp
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@ -574,7 +574,7 @@ namespace nlsat {
if (is_const(p))
return;
if (m_factor) {
TRACE("nlsat_explain", tout << "adding factors of\n"; display(tout, p); tout << "\n";);
TRACE("nlsat_explain", display(tout << "adding factors of\n", p); tout << "\n";);
factor(p, m_factors);
polynomial_ref f(m_pm);
for (unsigned i = 0; i < m_factors.size(); i++) {
@ -1457,7 +1457,7 @@ namespace nlsat {
process(num, ls);
reset_already_added();
m_result = nullptr;
TRACE("nlsat_explain", tout << "[explain] result\n"; display(tout, result););
TRACE("nlsat_explain", display(tout << "[explain] result\n", result););
CASSERT("nlsat", check_already_added());
}
@ -1466,7 +1466,12 @@ namespace nlsat {
m_result = &result;
svector<literal> lits;
TRACE("nlsat", tout << "project x" << x << "\n"; m_solver.display(tout););
TRACE("nlsat", tout << "project x" << x << "\n";
for (unsigned i = 0; i < num; ++i) {
m_solver.display(tout, ls[i]) << " ";
}
tout << "\n";
m_solver.display(tout););
DEBUG_CODE(
for (unsigned i = 0; i < num; ++i) {
@ -1509,8 +1514,15 @@ namespace nlsat {
result.set(i, ~result[i]);
}
DEBUG_CODE(
for (unsigned i = 0; i < result.size(); ++i) {
SASSERT(l_true == m_solver.value(result[i]));
TRACE("nlsat",
for (literal l : result) {
m_solver.display(tout << " ", l);
}
tout << "\n";
);
for (literal l : result) {
CTRACE("nlsat", l_true != m_solver.value(l), m_solver.display(tout, l) << " " << m_solver.value(l) << "\n";);
SASSERT(l_true == m_solver.value(l));
});
}
@ -1621,21 +1633,21 @@ namespace nlsat {
roots.reset();
m_am.isolate_roots(p, undef_var_assignment(m_assignment, x), roots);
bool glb_valid = false, lub_valid = false;
for (unsigned j = 0; j < roots.size(); ++j) {
int s = m_am.compare(x_val, roots[j]);
for (auto const& r : roots) {
int s = m_am.compare(x_val, r);
SASSERT(s != 0);
if (s < 0 && (!lub_valid || m_am.lt(r, lub))) {
lub_index = i;
m_am.set(lub, r);
}
if (s > 0 && (!glb_valid || m_am.lt(glb, r))) {
glb_index = i;
m_am.set(glb, r);
}
lub_valid |= s < 0;
glb_valid |= s > 0;
if (s < 0 && m_am.lt(roots[j], lub)) {
lub_index = i;
m_am.set(lub, roots[j]);
}
if (s > 0 && m_am.lt(glb, roots[j])) {
glb_index = i;
m_am.set(glb, roots[j]);
}
}
if (glb_valid) {
++num_glb;
@ -1701,6 +1713,7 @@ namespace nlsat {
}
void project_pairs(var x, unsigned idx, polynomial_ref_vector const& ps) {
TRACE("nlsat_explain", tout << "project pairs\n";);
polynomial_ref p(m_pm);
p = ps.get(idx);
for (unsigned i = 0; i < ps.size(); ++i) {