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Assert constraints only once

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This commit is contained in:
Jakob Rath 2022-01-20 17:42:34 +01:00
parent b968898b7e
commit c7a09051fa
1 changed files with 12 additions and 3 deletions
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15
src/math/polysat/solver.cpp
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@ -170,16 +170,25 @@ namespace polysat {
m_constraints.ensure_bvar(c.get()); m_constraints.ensure_bvar(c.get());
sat::literal lit = c.blit(); sat::literal lit = c.blit();
LOG("New constraint: " << c); LOG("New constraint: " << c);
if (m_bvars.is_false(lit)) switch (m_bvars.value(lit)) {
case l_false:
set_conflict(c); set_conflict(c);
else { break;
case l_true:
// constraint c is already asserted
SASSERT(m_bvars.level(lit) <= m_level);
// TODO: track additional dep?
break;
case l_undef:
m_bvars.asserted(lit, m_level, dep); m_bvars.asserted(lit, m_level, dep);
m_trail.push_back(trail_instr_t::assign_bool_i); m_trail.push_back(trail_instr_t::assign_bool_i);
m_search.push_boolean(lit); m_search.push_boolean(lit);
if (c.is_currently_false(*this)) if (c.is_currently_false(*this))
set_conflict(c); set_conflict(c);
break;
default:
UNREACHABLE();
} }
#if ENABLE_LINEAR_SOLVER #if ENABLE_LINEAR_SOLVER
m_linear_solver.new_constraint(*c.get()); m_linear_solver.new_constraint(*c.get());
#endif #endif