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Proof step 4 from proof validrefnotnull-validref (conclusion)

⊦ ¬ validref(str, r, ty, st) → ¬ validrefnotnull(str, r, 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 3:
validrefnotnull(str, r, ty, st) ⊦ r = jvmref, validref(str, r, ty, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]