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refine parsat

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-01-30 11:30:42 -08:00
parent dadcc6e8ff
commit 76bc4f0b38
1 changed files with 10 additions and 3 deletions
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13
src/sat/sat_solver.cpp
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@ -72,9 +72,9 @@ namespace sat {
}
void solver::copy(solver const & src) {
pop_to_base_level();
SASSERT(m_mc.empty() && src.m_mc.empty());
SASSERT(scope_lvl() == 0);
SASSERT(src.scope_lvl() == 0);
// create new vars
if (num_vars() < src.num_vars()) {
for (bool_var v = num_vars(); v < src.num_vars(); v++) {
@ -120,6 +120,9 @@ namespace sat {
mk_clause_core(buffer);
}
}
m_user_scope_literals.reset();
m_user_scope_literals.append(src.m_user_scope_literals);
}
// -----------------------
@ -800,6 +803,9 @@ namespace sat {
sat::par par;
for (int i = 0; i < num_threads; ++i) {
m_params.set_uint("random_seed", i);
if (i < num_threads/2) {
m_params.set_sym("phase", symbol("random"));
}
solvers[i] = alloc(sat::solver, m_params, rlims[i], 0);
solvers[i]->copy(*this);
solvers[i]->set_par(&par);
@ -869,17 +875,18 @@ namespace sat {
*/
void solver::exchange_par() {
if (m_par && scope_lvl() == 0) {
unsigned sz = scope_lvl() == 0 ? m_trail.size() : m_scopes[0].m_trail_lim;
unsigned num_in = 0, num_out = 0;
SASSERT(scope_lvl() == 0); // parallel with assumptions is TBD
literal_vector in, out;
for (unsigned i = m_par_limit_out; i < m_trail.size(); ++i) {
for (unsigned i = m_par_limit_out; i < sz; ++i) {
literal lit = m_trail[i];
if (lit.var() < m_par_num_vars) {
++num_out;
out.push_back(lit);
}
}
m_par_limit_out = m_trail.size();
m_par_limit_out = sz;
m_par->exchange(out, m_par_limit_in, in);
for (unsigned i = 0; !inconsistent() && i < in.size(); ++i) {
literal lit = in[i];