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fix performance for model construction, recognize concats of values as a value for pre-processing

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-03-23 17:23:57 -07:00
parent 72ec6dc8e1
commit 45fdb95f53
9 changed files with 163 additions and 244 deletions
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47
src/smt/theory_seq.cpp
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@ -2028,29 +2028,36 @@ public:
expr_ref_vector args(th.m);
unsigned j = 0, k = 0;
bool is_string = th.m_util.is_string(m_sort);
for (unsigned i = 0; i < m_source.size(); ++i) {
if (m_source[i] && is_string) {
bv_util bv(th.m);
rational val;
unsigned sz;
VERIFY(bv.is_numeral(values[j++], val, sz));
svector<bool> val_as_bits;
unsigned v = val.get_unsigned();
for (unsigned i = 0; i < sz; ++i) {
val_as_bits.push_back(1 == v % 2);
v = v / 2;
svector<unsigned> sbuffer;
expr_ref result(th.m);
if (is_string) {
bv_util bv(th.m);
rational val;
unsigned sz;
for (unsigned i = 0; i < m_source.size(); ++i) {
if (m_source[i]) {
VERIFY(bv.is_numeral(values[j++], val, sz));
}
args.push_back(th.m_util.str.mk_string(zstring(sz, val_as_bits.c_ptr())));
}
else if (m_source[i]) {
args.push_back(th.m_util.str.mk_unit(values[j++]));
}
else {
args.push_back(m_strings[k++]);
else {
VERIFY(bv.is_numeral(m_strings[k++], val, sz));
}
sbuffer.push_back(val.get_unsigned());
}
result = th.m_util.str.mk_string(zstring(sbuffer.size(), sbuffer.c_ptr()));
}
else {
for (unsigned i = 0; i < m_source.size(); ++i) {
if (m_source[i]) {
args.push_back(th.m_util.str.mk_unit(values[j++]));
}
else {
args.push_back(m_strings[k++]);
}
}
result = th.mk_concat(args, m_sort);
th.m_rewrite(result);
}
expr_ref result = th.mk_concat(args, m_sort);
th.m_rewrite(result);
th.m_factory->add_trail(result);
return to_app(result);
}