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plasp/tests/data/blocksworld-domain.pddl

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(define (domain BLOCKS)
(:requirements :strips :typing)
(:types block)
(:predicates (on ?x - block ?y - block)
(ontable ?x - block)
(clear ?x - block)
(handempty)
(holding ?x - block)
)
(:action pick-up
:parameters (?x - block)
:precondition (and (clear ?x) (ontable ?x) (handempty))
:effect
(and (not (ontable ?x))
(not (clear ?x))
(not (handempty))
(holding ?x)))
(:action put-down
:parameters (?x - block)
:precondition (holding ?x)
:effect
(and (not (holding ?x))
(clear ?x)
(handempty)
(ontable ?x)))
(:action stack
:parameters (?x - block ?y - block)
:precondition (and (holding ?x) (clear ?y))
:effect
(and (not (holding ?x))
(not (clear ?y))
(clear ?x)
(handempty)
(on ?x ?y)))
(:action unstack
:parameters (?x - block ?y - block)
:precondition (and (on ?x ?y) (clear ?x) (handempty))
:effect
(and (holding ?x)
(clear ?y)
(not (clear ?x))
(not (handempty))
(not (on ?x ?y)))))