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move arithmetical mbp functionality to model_based_opt

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-06-26 16:12:14 -07:00
parent 7fc294d329
commit b66d457b19
6 changed files with 76 additions and 106 deletions
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21
src/qe/qe_arith_plugin.cpp
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@ -36,6 +36,27 @@ Revision History:
namespace qe {
static bool is_divides(arith_util& a, expr* e1, expr* e2, rational& k, expr_ref& p) {
expr* t1, *t2;
if (a.is_mod(e2, t1, t2) &&
a.is_numeral(e1, k) &&
k.is_zero() &&
a.is_numeral(t2, k)) {
p = t1;
return true;
}
return false;
}
static bool is_divides(arith_util& a, expr* e, rational& k, expr_ref& t) {
expr* e1, *e2;
if (!a.get_manager().is_eq(e, e1, e2)) {
return false;
}
return is_divides(a, e1, e2, k, t) || is_divides(a, e2, e1, k, t);
}
class bound {
rational m_coeff;
expr_ref m_term;