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ensure parallel mode works under push/pop

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-02-04 19:22:28 -08:00
parent 69ca840ceb
commit 3da3b41786
4 changed files with 16 additions and 8 deletions
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7
src/math/lp/lp_bound_propagator.cpp
View file

@ -22,6 +22,9 @@ void lp_bound_propagator::try_add_bound(mpq const& v, unsigned j, bool is_low, b
if (strict)
kind = static_cast<lconstraint_kind>(kind / 2);
// static unsigned s_count = 0, a_count = 0;
// ++a_count;
// if ((a_count % 100000) == 0) std::cout << s_count << " / " << a_count << "\n";
if (!bound_is_interesting(j, kind, v))
return;
unsigned k; // index to ibounds
@ -29,10 +32,12 @@ void lp_bound_propagator::try_add_bound(mpq const& v, unsigned j, bool is_low, b
if (try_get_value(m_improved_lower_bounds, j, k)) {
auto & found_bound = m_ibounds[k];
if (v > found_bound.m_bound || (v == found_bound.m_bound && found_bound.m_strict == false && strict)) {
// ++s_count;
found_bound = implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict);
TRACE("try_add_bound", m_lar_solver.print_implied_bound(found_bound, tout););
}
} else {
// ++s_count;
m_improved_lower_bounds[j] = m_ibounds.size();
m_ibounds.push_back(implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict));
TRACE("try_add_bound", m_lar_solver.print_implied_bound(m_ibounds.back(), tout););
@ -41,10 +46,12 @@ void lp_bound_propagator::try_add_bound(mpq const& v, unsigned j, bool is_low, b
if (try_get_value(m_improved_upper_bounds, j, k)) {
auto & found_bound = m_ibounds[k];
if (v < found_bound.m_bound || (v == found_bound.m_bound && found_bound.m_strict == false && strict)) {
// ++s_count;
found_bound = implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict);
TRACE("try_add_bound", m_lar_solver.print_implied_bound(found_bound, tout););
}
} else {
// ++s_count;
m_improved_upper_bounds[j] = m_ibounds.size();
m_ibounds.push_back(implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict));
TRACE("try_add_bound", m_lar_solver.print_implied_bound(m_ibounds.back(), tout););

7
src/smt/smt_context.cpp
View file

@ -155,15 +155,16 @@ namespace smt {
return std::min(m_relevancy_lvl, m_fparams.m_relevancy_lvl);
}
void context::copy(context& src_ctx, context& dst_ctx) {
void context::copy(context& src_ctx, context& dst_ctx, bool override_base) {
ast_manager& dst_m = dst_ctx.get_manager();
ast_manager& src_m = src_ctx.get_manager();
src_ctx.pop_to_base_lvl();
if (src_ctx.m_base_lvl > 0) {
if (!override_base && src_ctx.m_base_lvl > 0) {
INVOKE_DEBUGGER();
throw default_exception("Cloning contexts within a user-scope is not allowed");
}
SASSERT(src_ctx.m_base_lvl == 0);
SASSERT(src_ctx.m_base_lvl == 0 || override_base);
ast_translation tr(src_m, dst_m, false);

2
src/smt/smt_context.h
View file

@ -1539,7 +1539,7 @@ namespace smt {
*/
context * mk_fresh(symbol const * l = nullptr, smt_params * smtp = nullptr, params_ref const & p = params_ref());
static void copy(context& src, context& dst);
static void copy(context& src, context& dst, bool override_base = false);
/**
\brief Translate context to use new manager m.

8
src/smt/smt_parallel.cpp
View file

@ -33,9 +33,9 @@ namespace smt {
unsigned thread_max_conflicts = ctx.get_fparams().m_threads_max_conflicts;
unsigned max_conflicts = ctx.get_fparams().m_max_conflicts;
#if 0
// TBD: try first sequential with a low conflict budget to make super easy problems cheap
ctx.get_fparams().m_max_conflicts = std::min(thread_max_conflicts, 20);
#if 1
// try first sequential with a low conflict budget to make super easy problems cheap
ctx.get_fparams().m_max_conflicts = std::min(thread_max_conflicts, 40u);
result = ctx.check(asms.size(), asms.c_ptr());
if (result != l_undef || ctx.m_num_conflicts < max_conflicts) {
return result;
@ -65,7 +65,7 @@ namespace smt {
pms.push_back(new_m);
pctxs.push_back(alloc(context, *new_m, ctx.get_fparams(), ctx.get_params()));
context& new_ctx = *pctxs.back();
context::copy(ctx, new_ctx);
context::copy(ctx, new_ctx, true);
new_ctx.set_random_seed(i + ctx.get_fparams().m_random_seed);
ast_translation tr(*new_m, m);
pasms.push_back(tr(asms));