(*Lenb: moved alloc_juicy_variables, juicy_mem_alloc_core, and alloc_juicy_variables_e here from to veric/juicy_mem_ops.v*)

Lemma alloc_juicy_variables_match_venv:
forall ge jm vl ve' jm',
alloc_juicy_variables ge empty_env jm vl = (ve',jm') ->
match_venv (make_venv ve') vl.