Local Arguments getThreadR {_} {_} {_} _ _ _.
Local Arguments getThreadC {_} {_} {_} _ _ _.
Local Arguments personal_mem : clear implicits.
Local Arguments updThread {_} {_} {_} _ _ _ _ _.
Local Arguments updThreadR {_} {_} {_} _ _ _ _.
Local Arguments updThreadC {_} {_} {_} _ _ _ _.
Local Arguments juicyRestrict : clear implicits.
Set Bullet Behavior "Strict Subproofs".

Lemma valid_block0 m b : ~valid_block m b <-> (b >= nextblock m)%positive.