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Proof step 15 from proof nopathex-badclassfield (previous step)

st[r0 -- _type] .type = mkclasstype(class), type∃(str, st[r -- _type] .type), path∃(str, r, r0, st), fs ' ∈ instfields(class), contains(str, st[r -- _type] .type ' + tys + mkclasstype(class) '), interface∃(str, class) ⊦ r = r0, r0 = jvmref, fs ' = _type

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 11:
⊦ ¬ is_valid_ref(str, r1, st) ∧ r1 ≠ jvmref → ¬ path∃(str, r, r1, st)
Proof step 14:
¬ (¬ is_valid_ref(str, r0, st) ∧ r0 ≠ jvmref), st[r0 -- _type] .type = mkclasstype(class), type∃(str, st[r -- _type] .type), path∃(str, r, r0, st), fs ' ∈ instfields(class), contains(str, st[r -- _type] .type ' + tys + mkclasstype(class) '), interface∃(str, class) ⊦ r = r0, r0 = jvmref, fs ' = _type

Rule argument

[speclemmaarg: ,¬ is_valid_ref(str, r1, st) ∧ r1 ≠ jvmref → ¬ path∃(str, r, r1, st) ,[st, r1, r, str] → [st, r0, r, str] ,F ,cyclic , ,pathex-not-is-validref-01 ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, r0, r, str)]]