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fix #6313

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remaining new issues
This commit is contained in:
Nikolaj Bjorner 2022-09-02 17:43:57 -07:00
parent 9dca8d18ed
commit 7e1e64d027
2 changed files with 10 additions and 4 deletions
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10
src/qe/mbp/mbp_arith.cpp
View file

@ -183,7 +183,9 @@ namespace mbp {
return c0;
};
if (a.is_mul(t, t1, t2) && is_numeral(t1, mul1))
if (tids.contains(t))
insert_mul(t, mul, ts);
else if (a.is_mul(t, t1, t2) && is_numeral(t1, mul1))
linearize(mbo, eval, mul * mul1, t2, c, fmls, ts, tids);
else if (a.is_mul(t, t1, t2) && is_numeral(t2, mul1))
linearize(mbo, eval, mul * mul1, t1, c, fmls, ts, tids);
@ -221,6 +223,7 @@ namespace mbp {
vars coeffs;
rational c0 = add_def(t1, mul1, coeffs);
tids.insert(t, mbo.add_mod(coeffs, c0, mul1));
}
else if (a.is_idiv(t, t1, t2) && is_numeral(t2, mul1) && mul1 > 0) {
// v = t1 div mul1
@ -278,9 +281,8 @@ namespace mbp {
expr_ref var2expr(ptr_vector<expr> const& index2expr, var const& v) {
expr_ref t(index2expr[v.m_id], m);
if (!v.m_coeff.is_one()) {
t = a.mk_mul(a.mk_numeral(v.m_coeff, a.is_int(t)), t);
}
if (!v.m_coeff.is_one())
t = a.mk_mul(a.mk_numeral(v.m_coeff, a.is_int(t)), t);
return t;
}

4
src/sat/smt/bv_internalize.cpp
View file

@ -450,6 +450,10 @@ namespace bv {
* Create the axioms:
* bit2bool(i,n) == ((e div 2^i) mod 2 != 0)
* for i = 0,.., sz-1
*
* Alternative axiomatization:
* e = sum bit2bool(i,n)*2^i + 2^n * (div(e, 2^n))
* possibly term div(e,2^n) is not
*/
void solver::assert_int2bv_axiom(app* n) {
expr* e = nullptr;