void SAT::btToLevel(int level) {
if (decisionLevel() <= level) return;
for (int l = trail.size(); l-- > level+1; ) {
untrailToPos(trail[l], 0);
for (int i = rtrail[l].size(); i--; ) {
free(rtrail[l][i]);
}
}
trail.resize(level+1);
qhead.resize(level+1);
rtrail.resize(level+1);
engine.btToLevel(level);
if (so.mip) mip->btToLevel(level);
}
void SAT::btToLevel(int level) {
#if DEBUG_VERBOSE
std::cerr << "SAT::btToLevel( " << level << ")\n";
#endif
if (decisionLevel() <= level) return;
for (int l = trail.size(); l-- > level+1; ) {
untrailToPos(trail[l], 0);
for (int i = rtrail[l].size(); i--; ) {
free(rtrail[l][i]);
}
}
trail.resize(level+1);
qhead.resize(level+1);
rtrail.resize(level+1);
engine.btToLevel(level);
if (so.mip) mip->btToLevel(level);
}
void SAT::btToPos(int sat_pos, int core_pos) {
untrailToPos(trail.last(), sat_pos);
engine.btToPos(core_pos);
}
