Issue with `Watch literals successor generator`, output doesn't match.

[anubhav-cs]

For the instance ER-problem-patient2doc, the following command results in extensive memory consumption ~14GB, and a plan output of different length than the counterpart with match tree.

    python3 lapkt.py BRFS_Planner -d <domain.pddl> -p <problem.pddl> --no_match_tree

• log_no_match_tree_BRFS.txt
• log_match_tree_BRFS.txt

The following files have the details of the domain and problem pddl.

• domain.txt
• problem.txt

Additionally, validate throws error- "Problem in domain definition!".