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fix sign bug in internalization of literals

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This commit is contained in:
Nikolaj Bjorner 2020-12-14 17:33:14 -08:00
parent 0ef8ebe89f
commit 692bed7991
5 changed files with 30 additions and 17 deletions
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15
src/sat/smt/euf_ackerman.cpp
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@ -166,30 +166,33 @@ namespace euf {
}
}
void ackerman::add_cc(expr* _a, expr* _b) {
void ackerman::add_cc(expr* _a, expr* _b) {
flet<bool> _is_redundant(s.m_is_redundant, true);
app* a = to_app(_a);
app* b = to_app(_b);
TRACE("ack", tout << mk_pp(a, m) << " " << mk_pp(b, m) << "\n";);
sat::literal_vector lits;
unsigned sz = a->get_num_args();
for (unsigned i = 0; i < sz; ++i) {
expr_ref eq(m.mk_eq(a->get_arg(i), b->get_arg(i)), m);
lits.push_back(s.internalize(eq, true, false, true));
lits.push_back(~s.mk_literal(eq));
}
expr_ref eq(m.mk_eq(a, b), m);
lits.push_back(s.internalize(eq, false, false, true));
lits.push_back(s.mk_literal(eq));
s.s().mk_clause(lits, sat::status::th(true, m.get_basic_family_id()));
}
void ackerman::add_eq(expr* a, expr* b, expr* c) {
flet<bool> _is_redundant(s.m_is_redundant, true);
sat::literal lits[3];
expr_ref eq1(m.mk_eq(a, c), m);
expr_ref eq2(m.mk_eq(b, c), m);
expr_ref eq3(m.mk_eq(a, b), m);
TRACE("ack", tout << mk_pp(a, m) << " " << mk_pp(b, m) << " " << mk_pp(c, m) << "\n";);
lits[0] = s.internalize(eq1, true, false, true);
lits[1] = s.internalize(eq2, true, false, true);
lits[2] = s.internalize(eq3, false, false, true);
lits[0] = ~s.mk_literal(eq1);
lits[1] = ~s.mk_literal(eq2);
lits[2] = s.mk_literal(eq3);
s.s().mk_clause(3, lits, sat::status::th(true, m.get_basic_family_id()));
}
}