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Proof step 4 from proof validref-array-len-in (previous step)

¬ (r ≠ jvmref ∧ ¬ is_valid_ref(str, r, st)), is_arraytype(st[r -- _type] .type), st[r -- _type] .type .type ≤ ty ⊦ r = jvmref, r -- _length ∈ st, junkref(str, r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
is_arraytype(st[r -- _type] .type), st[r -- _type] .type .type ≤ ty, is_valid_ref(str, r, st) ⊦ r = jvmref, r -- _length ∈ st, junkref(str, r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]