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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2013-12-02 22:06:15 -08:00
parent af5d989d6c
commit 03f5020d0b
2 changed files with 29 additions and 28 deletions
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36
src/opt/opt_context.cpp
View file

@ -84,8 +84,7 @@ namespace opt {
// HACK: reuse m_optsmt but add only a single objective each round
bool is_max = (obj->get_decl_kind() == OP_MAXIMIZE);
m_optsmt.add(to_app(obj->get_arg(0)), is_max);
opt_solver& s = *m_solver.get();
lbool result = m_optsmt(s);
lbool result = m_optsmt(get_solver());
if (committed) m_optsmt.commit_assignment(0);
return result;
}
@ -93,30 +92,27 @@ namespace opt {
lbool context::execute_maxsat(app* obj, bool committed) {
maxsmt* ms;
VERIFY(m_maxsmts.find(obj->get_decl()->get_name(), ms));
opt_solver& s = *m_solver.get();
lbool result = (*ms)(s);
lbool result = (*ms)(get_solver());
if (committed) ms->commit_assignment();
return result;
}
lbool context::execute_lex(app* obj) {
lbool result = l_true;
for (unsigned i = 0; i < obj->get_num_args(); ++i) {
result = execute(obj->get_arg(i), true);
if (result != l_true) break;
lbool r = l_true;
for (unsigned i = 0; r == l_true && i < obj->get_num_args(); ++i) {
r = execute(obj->get_arg(i), true);
}
return result;
return r;
}
lbool context::execute_box(app* obj) {
lbool result = l_true;
for (unsigned i = 0; i < obj->get_num_args(); ++i) {
lbool r = l_true;
for (unsigned i = 0; r == l_true && i < obj->get_num_args(); ++i) {
push();
result = execute(obj->get_arg(i), false);
r = execute(obj->get_arg(i), false);
pop(1);
if (result != l_true) break;
}
return result;
return r;
}
lbool context::execute_pareto(app* obj) {
@ -124,18 +120,20 @@ namespace opt {
return execute_lex(obj);
}
opt_solver& context::get_solver() {
return *m_solver.get();
}
void context::push() {
opt_solver& s = *m_solver.get();
s.push();
get_solver().push();
}
void context::pop(unsigned sz) {
opt_solver& s = *m_solver.get();
s.pop(sz);
get_solver().pop(sz);
}
lbool context::optimize(expr* objective) {
opt_solver& s = *m_solver.get();
opt_solver& s = get_solver();
solver::scoped_push _sp(s);
for (unsigned i = 0; i < m_hard_constraints.size(); ++i) {

21
src/opt/opt_context.h
View file

@ -53,15 +53,6 @@ namespace opt {
void add_objective(app* t, bool is_max) { m_objs.push_back(t); m_ismaxs.push_back(is_max); }
void add_hard_constraint(expr* f) { m_hard_constraints.push_back(f); }
lbool execute(expr* obj, bool committed);
lbool execute_min_max(app* obj, bool committed);
lbool execute_maxsat(app* obj, bool committed);
lbool execute_lex(app* obj);
lbool execute_box(app* obj);
lbool execute_pareto(app* obj);
void push();
void pop(unsigned sz);
lbool optimize(expr* objective);
lbool optimize();
@ -76,6 +67,18 @@ namespace opt {
void updt_params(params_ref& p);
private:
void validate_feasibility(maxsmt& ms);
lbool execute(expr* obj, bool committed);
lbool execute_min_max(app* obj, bool committed);
lbool execute_maxsat(app* obj, bool committed);
lbool execute_lex(app* obj);
lbool execute_box(app* obj);
lbool execute_pareto(app* obj);
void push();
void pop(unsigned sz);
opt_solver& get_solver();
};
}