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updates

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2025-11-19 14:02:27 -08:00
parent 5d316a51d1
commit 823800541e
3 changed files with 24 additions and 15 deletions
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28
src/nlsat/nlsat_solver.cpp
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@ -1871,6 +1871,7 @@ namespace nlsat {
lbool search_check() {
verbose_stream() << "search check\n";
lbool r = l_undef;
m_stats.m_conflicts = 0;
m_stats.m_restarts = 0;
@ -1880,8 +1881,15 @@ namespace nlsat {
if (r != l_true)
break;
++m_stats.m_restarts;
vector<std::pair<var, rational>> bounds;
gc();
if (m_stats.m_restarts % 10 == 0) {
if (m_reordered)
restore_order();
apply_reorder();
}
vector<std::pair<var, rational>> bounds;
for (var x = 0; x < num_vars(); x++) {
if (is_int(x) && m_assignment.is_assigned(x) && !m_am.is_int(m_assignment.value(x))) {
scoped_anum v(m_am), vlo(m_am);
@ -1905,13 +1913,6 @@ namespace nlsat {
if (bounds.empty())
break;
gc();
if (m_stats.m_restarts % 10 == 0) {
if (m_reordered)
restore_order();
apply_reorder();
}
init_search();
IF_VERBOSE(2, verbose_stream() << "(nlsat-b&b :conflicts " << m_stats.m_conflicts
<< " :decisions " << m_stats.m_decisions
@ -1925,15 +1926,18 @@ namespace nlsat {
if (!m_model_values.empty()) {
bool found = false;
random_gen r(++m_random_seed);
auto const &[x, bound] = bounds[r(bounds.size())];
for (auto const &[mx, mvalue, lo, hi] : m_model_values) {
if (mx == x) {
auto const &[x, value] = bounds[r(bounds.size())];
for (auto const &[ext_x, mvalue, lo, hi] : m_model_values) {
if (ext_x == m_perm[x]) {
verbose_stream() << x << " " << ext_x << " bound: " << mvalue << " value " << value
<< "\n ";
TRACE(nla_solver, tout << "x" << ext_x << " bound " << mvalue << "\n");
polynomial_ref p(m_pm);
rational one(1);
bool is_even = false;
p = m_pm.mk_linear(1, &one, &x, -mvalue); // x - mvalue
auto *p1 = p.get();
if (mvalue < bound) {
if (mvalue < value) {
// assert x <= mvalue
// <=>
// ~ (x > mvalue)