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Proof step 3 from proof validrefnotnull (conclusion)

⊦ validref(str, r, ty, st) → (validrefnotnull(str, r, ty, st) ↔ r ≠ jvmref)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ ¬ validrefnotnull(str, jvmref, ty, st)
Proof step 2:
⊦ ¬ validrefnotnull(str, r, ty, st) ∧ r ≠ jvmref → ¬ validref(str, r, ty, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]