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remove var_constraint to get rid of bdd dependencies

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-06-21 16:14:30 -07:00
parent 9173306adc
commit 63f3c841d8
8 changed files with 22 additions and 25 deletions
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4
src/math/polysat/solver.cpp
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@ -117,12 +117,13 @@ namespace polysat {
}
constraint_ref solver::mk_diseq(pdd const& p, unsigned dep) {
return m_constraints.eq(m_level, neg_t, p, mk_dep_ref(dep));
#if 0
if (p.is_val()) {
// if (!p.is_zero())
// return nullptr; // TODO: probably better to create a dummy always-true constraint?
// // Use 0 != 0 for a constraint that is always false
// Use p != 0 as evaluable dummy constraint
return m_constraints.eq(m_level, neg_t, p, mk_dep_ref(dep));
}
unsigned sz = size(p.var());
auto slack = add_var(sz);
@ -130,6 +131,7 @@ namespace polysat {
add_eq(q, dep); // TODO: 'dep' now refers to two constraints; this is not yet supported
auto non_zero = m_vble.sz2bits(sz).non_zero();
return m_constraints.viable(m_level, pos_t, slack, non_zero, mk_dep_ref(dep));
#endif
}
constraint_ref solver::mk_ule(pdd const& p, pdd const& q, unsigned dep) {