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Proof step 4 from proof validref-no-obj (previous step)

str0 ≠ `java.lang.Object' ⊦ ¬ is_obj(str, r, st) → (validref(str, r, mkclasstype(str0 .class), st) ↔ r = jvmref)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ validref(str, jvmref, ty, st)
Proof step 3:
validref(str, r, mkclasstype(str0 .class), st) ⊦ str0 = `java.lang.Object', r = jvmref, is_obj(str, r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]