| line | !l | l&&!r | l&&r | condition | 
 
| 287 | 6 | 2 | 1 | $is_universal and $union->size == $self->size | 
 
| 343 | 1278 | 8 | 676 | $is_null and $intersection->size == $self->size | 
 
| 605 | 0 | 0 | 2081 | ref $a and $a->isa('Set::Scalar::Base') | 
 
|  | 0 | 124 | 1957 | ref $a and $a->isa('Set::Scalar::Base') and ref $b | 
 
|  | 124 | 0 | 1957 | ref $a and $a->isa('Set::Scalar::Base') and ref $b and $b->isa('Set::Scalar::Base') | 
 
| 617 | 676 | 1278 | 3 | $na and $nb == 0 | 
 
| 618 | 1278 | 675 | 1 | $na == 0 and $nb | 
 
| 619 | 675 | 0 | 1278 | $na and $nb | 
 
|  | 675 | 1274 | 4 | $na and $nb and $nc == 0 | 
 
| 620 | 4 | 2 | 1943 | $na == $nc and $nb == $nc | 
 
| 728 | 367 | 0 | 19 | blessed $element and $element->isa('Set::Scalar::Base') |