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Proof step 5 from proof validrefnotnull-no-len (conclusion)

⊦ ¬ r -- _length ∈ st → ¬ validrefnotnull(str, r, mkarraytype(ty), st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ validrefnotnull(str, r, ty, st) → r ≠ jvmref
Proof step 4:
validrefnotnull(str, r, mkarraytype(ty), st) ⊦ r = jvmref, r -- _length ∈ st

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]