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updated notes, fixes to dual solver

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This commit is contained in:
Nikolaj Bjorner 2020-09-29 03:29:33 -07:00
parent ef6542823b
commit a216bee647
5 changed files with 142 additions and 54 deletions
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9
src/sat/smt/sat_dual_solver.h
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@ -8,6 +8,8 @@ Module Name:
Abstract:
Solver for obtaining implicant.
Based on an idea by Armin Biere to use dual propagation
for representation of negated goal.
Author:
@ -15,18 +17,19 @@ Author:
--*/
#pragma once
#include "util/lim_vector.h"
#include "sat/sat_solver.h"
namespace sat {
class dual_solver {
solver m_solver;
literal_vector m_roots, m_lits, m_core, m_units;
lim_svector<literal> m_units, m_roots;
lim_svector<bool_var> m_tracked_vars;
literal_vector m_lits, m_core;
bool_var_vector m_is_tracked;
unsigned_vector m_tracked_stack;
unsigned_vector m_ext2var;
unsigned_vector m_var2ext;
unsigned_vector m_roots_lim, m_tracked_lim, m_units_lim;
void add_literal(literal lit);
bool_var ext2var(bool_var v);