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Proof step 9 from proof pathex-putstatfield (previous step)

validrefs(str, r ' + refs0, mkclasstype(`java.lang.Object' .class), st) ⊦ refs0 = [], ∃ refs. refs ≠ [] ∧ refs .first = r ∧ refs .last = refs0 .last ∧ validrefs(str, refs, mkclasstype(`java.lang.Object' .class), st[jvmref -- sk, val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
⊦ validrefs(str, refs, ty, st[jvmref -- sk, val]) ↔ validrefs(str, refs, ty, st)
Proof step 8:
validrefs(str, r ' + refs0, mkclasstype(`java.lang.Object' .class), st) ⊦ refs0 = [], ∃ refs. refs ≠ [] ∧ refs .first = r ∧ refs .last = refs0 .last ∧ validrefs(str, refs, mkclasstype(`java.lang.Object' .class), st)

Rule argument

[emptyarg]

Additional information

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