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adding smt parallel solving

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-04-15 16:16:48 -07:00
parent 252fb4af6e
commit 012a96fd81
17 changed files with 174 additions and 73 deletions
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54
src/smt/smt_solver.cpp
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@ -30,9 +30,35 @@ Notes:
namespace smt {
class smt_solver : public solver_na2as {
struct cuber {
smt_solver& m_solver;
unsigned m_round;
expr_ref m_result;
cuber(smt_solver& s):
m_solver(s),
m_round(0),
m_result(s.get_manager()) {}
expr_ref cube() {
switch (m_round) {
case 0:
m_result = m_solver.m_context.next_decision();
break;
case 1:
m_result = m_solver.get_manager().mk_not(m_result);
break;
default:
m_result = m_solver.get_manager().mk_false();
break;
}
++m_round;
return m_result;
}
};
smt_params m_smt_params;
smt::kernel m_context;
progress_callback * m_callback;
cuber* m_cuber;
symbol m_logic;
bool m_minimizing_core;
bool m_core_extend_patterns;
@ -45,6 +71,7 @@ namespace smt {
solver_na2as(m),
m_smt_params(p),
m_context(m, m_smt_params),
m_cuber(nullptr),
m_minimizing_core(false),
m_core_extend_patterns(false),
m_core_extend_patterns_max_distance(UINT_MAX),
@ -72,6 +99,7 @@ namespace smt {
virtual ~smt_solver() {
dec_ref_values(get_manager(), m_name2assertion);
dealloc(m_cuber);
}
virtual void updt_params(params_ref const & p) {
@ -204,7 +232,6 @@ namespace smt {
virtual ast_manager & get_manager() const { return m_context.m(); }
virtual void set_progress_callback(progress_callback * callback) {
m_callback = callback;
m_context.set_progress_callback(callback);
}
@ -217,13 +244,24 @@ namespace smt {
return m_context.get_formula(idx);
}
virtual expr_ref lookahead(expr_ref_vector const& assumptions, expr_ref_vector const& candidates) {
virtual expr_ref_vector cube(expr_ref_vector& vars, unsigned cutoff) {
ast_manager& m = get_manager();
return expr_ref(m.mk_true(), m);
}
virtual expr_ref_vector cube(expr_ref_vector&, unsigned) {
return expr_ref_vector(get_manager());
if (!m_cuber) {
m_cuber = alloc(cuber, *this);
}
expr_ref result = m_cuber->cube();
expr_ref_vector lits(m);
if (m.is_false(result)) {
dealloc(m_cuber);
m_cuber = nullptr;
}
if (m.is_true(result)) {
dealloc(m_cuber);
m_cuber = nullptr;
return lits;
}
lits.push_back(result);
return lits;
}
struct collect_fds_proc {