xbt_assert(i->c1 == j->c1);
xbt_assert(i->c2 == j->c2);
xbt_assert2(i->l1 == j->l1,"i->l1(=%ld) != j->l1(=%ld)",i->l1,j->l1);
xbt_assert(i->c1 == j->c1);
xbt_assert(i->c2 == j->c2);
xbt_assert2(i->l1 == j->l1,"i->l1(=%ld) != j->l1(=%ld)",i->l1,j->l1);