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Enable model construction and evaluation for theory functions that may be uninterpreted. To fix issue #237

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-11-02 10:18:25 -08:00
parent 7169fc469e
commit feba64b739
5 changed files with 75 additions and 52 deletions
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100
src/model/model_evaluator.cpp
View file

@ -101,31 +101,21 @@ struct evaluator_cfg : public default_rewriter_cfg {
br_status reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result, proof_ref & result_pr) {
result_pr = 0;
family_id fid = f->get_family_id();
if (fid == null_family_id) {
if (num == 0) {
expr * val = m_model.get_const_interp(f);
if (val != 0) {
result = val;
return BR_DONE;
}
if (m_model_completion) {
sort * s = f->get_range();
expr * val = m_model.get_some_value(s);
m_model.register_decl(f, val);
result = val;
return BR_DONE;
}
return BR_FAILED;
}
SASSERT(num > 0);
func_interp * fi = m_model.get_func_interp(f);
if (fi != 0 && eval_fi(fi, num, args, result)) {
TRACE("model_evaluator", tout << "reduce_app " << f->get_name() << "\n";
for (unsigned i = 0; i < num; i++) tout << mk_ismt2_pp(args[i], m()) << "\n";
tout << "---->\n" << mk_ismt2_pp(result, m()) << "\n";);
if (fid == null_family_id && num == 0) {
expr * val = m_model.get_const_interp(f);
if (val != 0) {
result = val;
return BR_DONE;
}
if (m_model_completion) {
sort * s = f->get_range();
expr * val = m_model.get_some_value(s);
m_model.register_decl(f, val);
result = val;
return BR_DONE;
}
return BR_FAILED;
}
if (fid == m_b_rw.get_fid()) {
@ -160,42 +150,50 @@ struct evaluator_cfg : public default_rewriter_cfg {
return m_pb_rw.mk_app_core(f, num, args, result);
if (fid == m_f_rw.get_fid())
return m_f_rw.mk_app_core(f, num, args, result);
func_interp * fi = m_model.get_func_interp(f);
if (fi != 0 && eval_fi(fi, num, args, result)) {
TRACE("model_evaluator", tout << "reduce_app " << f->get_name() << "\n";
for (unsigned i = 0; i < num; i++) tout << mk_ismt2_pp(args[i], m()) << "\n";
tout << "---->\n" << mk_ismt2_pp(result, m()) << "\n";);
return BR_DONE;
}
TRACE("model_evaluator", tout << f->get_name() << "\n";);
return BR_FAILED;
}
bool get_macro(func_decl * f, expr * & def, quantifier * & q, proof * & def_pr) {
if (f->get_family_id() == null_family_id) {
func_interp * fi = m_model.get_func_interp(f);
if (fi != 0) {
if (fi->is_partial()) {
if (m_model_completion) {
sort * s = f->get_range();
expr * val = m_model.get_some_value(s);
fi->set_else(val);
}
else {
return false;
}
func_interp * fi = m_model.get_func_interp(f);
if (fi != 0) {
if (fi->is_partial()) {
if (m_model_completion) {
sort * s = f->get_range();
expr * val = m_model.get_some_value(s);
fi->set_else(val);
}
def = fi->get_interp();
SASSERT(def != 0);
return true;
}
if (m_model_completion) {
sort * s = f->get_range();
expr * val = m_model.get_some_value(s);
func_interp * new_fi = alloc(func_interp, m(), f->get_arity());
new_fi->set_else(val);
m_model.register_decl(f, new_fi);
def = val;
return true;
}
else {
return false;
}
}
def = fi->get_interp();
SASSERT(def != 0);
return true;
}
if (f->get_family_id() == null_family_id && m_model_completion) {
sort * s = f->get_range();
expr * val = m_model.get_some_value(s);
func_interp * new_fi = alloc(func_interp, m(), f->get_arity());
new_fi->set_else(val);
m_model.register_decl(f, new_fi);
def = val;
return true;
}
return false;
}
bool max_steps_exceeded(unsigned num_steps) const {
cooperate("model evaluator");

7
src/smt/smt_model_generator.cpp
View file

@ -400,7 +400,12 @@ namespace smt {
\brief Return true if the interpretation of the function should be included in the model.
*/
bool model_generator::include_func_interp(func_decl * f) const {
return f->get_family_id() == null_family_id;
family_id fid = f->get_family_id();
if (fid == null_family_id) return true;
if (fid == m_manager.get_basic_family_id()) return false;
theory * th = m_context->get_theory(fid);
if (!th) return true;
return th->include_func_interp(f);
}
/**

4
src/smt/smt_theory.h
View file

@ -412,6 +412,10 @@ namespace smt {
return 0;
}
virtual bool include_func_interp(func_decl* f) {
return false;
}
// -----------------------------------
//
// Model checker

15
src/smt/theory_bv.cpp
View file

@ -1283,6 +1283,21 @@ namespace smt {
theory::reset_eh();
}
bool theory_bv::include_func_interp(func_decl* f) {
SASSERT(f->get_family_id() == get_family_id());
switch (f->get_decl_kind()) {
case OP_BSDIV0:
case OP_BUDIV0:
case OP_BSREM0:
case OP_BUREM0:
case OP_BSMOD0:
return true;
default:
return false;
}
return false;
}
theory_bv::theory_bv(ast_manager & m, theory_bv_params const & params, bit_blaster_params const & bb_params):
theory(m.mk_family_id("bv")),
m_params(params),

1
src/smt/theory_bv.h
View file

@ -236,6 +236,7 @@ namespace smt {
virtual void pop_scope_eh(unsigned num_scopes);
virtual final_check_status final_check_eh();
virtual void reset_eh();
virtual bool include_func_interp(func_decl* f);
svector<theory_var> m_merge_aux[2]; //!< auxiliary vector used in merge_zero_one_bits
bool merge_zero_one_bits(theory_var r1, theory_var r2);