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put add_var on the trail

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This commit is contained in:
Jakob Rath 2023-08-18 15:18:55 +02:00
parent 1033c7e536
commit efe0fa8e15
1 changed files with 7 additions and 5 deletions
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12
src/math/polysat/slicing.cpp
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@ -202,8 +202,8 @@ namespace polysat {
unsigned const target_lvl = lvl - num_scopes;
unsigned const target_size = m_scopes[target_lvl];
m_scopes.shrink(target_lvl);
unsigned_vector replay_add_var;
svector<trail_item> replay_trail;
unsigned_vector replay_add_var_trail;
svector<std::pair<extract_args, pvar>> replay_extract_trail;
svector<concat_info> replay_concat_trail;
unsigned num_replay_concat = 0;
@ -211,7 +211,7 @@ namespace polysat {
switch (m_trail[i]) {
case trail_item::add_var:
replay_trail.push_back(trail_item::add_var);
replay_add_var.push_back(width(m_var2slice.back()));
replay_add_var_trail.push_back(width(m_var2slice.back()));
undo_add_var();
break;
case trail_item::split_core:
@ -245,13 +245,13 @@ namespace polysat {
m_trail.shrink(target_size);
// replay add_var/mk_extract/mk_concat in the same order
// (only until polysat::solver supports proper garbage collection of variables)
unsigned add_var_idx = replay_add_var.size();
unsigned add_var_idx = replay_add_var_trail.size();
unsigned extract_idx = replay_extract_trail.size();
unsigned concat_idx = m_concat_trail.size() - num_replay_concat;
for (auto it = replay_trail.rbegin(); it != replay_trail.rend(); ++it) {
switch (*it) {
case trail_item::add_var: {
unsigned const sz = replay_add_var[--add_var_idx];
unsigned const sz = replay_add_var_trail[--add_var_idx];
add_var(sz);
break;
}
@ -278,6 +278,8 @@ namespace polysat {
pvar const v = m_var2slice.size();
enode* s = alloc_slice(bit_width, v);
m_var2slice.push_back(s);
m_trail.push_back(trail_item::add_var);
LOG("add_var: v" << v << " -> " << slice_pp(*this, s));
}
void slicing::undo_add_var() {
@ -314,7 +316,7 @@ namespace polysat {
i.reset();
i.var = var;
enode* n = m_egraph.mk(e, 0, num_args, args); // NOTE: the egraph keeps a strong reference to 'e'
// LOG("alloc_enode: " << e_pp(n));
LOG_V(10, "alloc_enode: " << slice_pp(*this, n) << " " << e_pp(n));
return n;
}