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enable core minimization with qsat in case it turns out to be useful

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-06-12 15:58:12 -07:00
parent 3ac4709992
commit c7ff05cc78
16 changed files with 235 additions and 132 deletions
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25
src/qe/qe_arith.cpp
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@ -1072,18 +1072,33 @@ namespace qe {
expr_ref_vector ts(m);
expr_ref t(m), s(m);
row const& r = rows[i];
if (r.m_vars.size() == 0) {
continue;
}
if (r.m_vars.size() == 1 && r.m_vars[0].m_coeff.is_neg()) {
var const& v = r.m_vars[0];
t = index2expr[v.m_id];
if (!v.m_coeff.is_minus_one()) {
t = a.mk_mul(t, a.mk_numeral(-v.m_coeff, a.is_int(t)));
}
s = a.mk_numeral(r.m_coeff, a.is_int(t));
switch (r.m_type) {
case opt::t_lt: t = a.mk_gt(t, s); break;
case opt::t_le: t = a.mk_ge(t, s); break;
case opt::t_eq: t = a.mk_eq(t, s); break;
}
fmls.push_back(t);
continue;
}
for (j = 0; j < r.m_vars.size(); ++j) {
var const& v = r.m_vars[j];
t = index2expr[v.m_id];
if (!v.m_coeff.is_one()) {
t = a.mk_mul(t, a.mk_numeral(v.m_coeff, v.m_coeff.is_int()));
t = a.mk_mul(t, a.mk_numeral(v.m_coeff, a.is_int(t)));
}
ts.push_back(t);
}
if (ts.empty()) {
continue;
}
s = a.mk_numeral(-r.m_coeff, r.m_coeff.is_int());
s = a.mk_numeral(-r.m_coeff, a.is_int(t));
if (ts.size() == 1) {
t = ts[0].get();
}