How to read instance names, e.g., blocks-9b-5l-1t.pddl

9b = the instance contains 9 blocks

5l = the (ltl) goal formula contains 9 atomic temporal-subformulas (e.g., <>p_1 ... && ... <>p_9)

1t = the (ltl) goal formula is of type 1, where types are as below.

0: eventualities, e.g., <>p_1 && <> p_2
1: chained eventualities, e.g., <>p_1 && X<>( p_2 && X <>p_3)
2: fairness, e.g., []<> p_1 && []<> p_2 && []<> p_3
3: until, e.g., (((...(p U q) U r) U...)
4: strong fairness, e.g., ([]<>p && []<>p -> []<> q) && ([]<> r -> []<>s), observe that the first conjunct 
has an additional fairness conjunct, used to "activate" []<>q 


