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Proof step 15 from proof pathex-put-cyclic (previous step)

st[r -- _type] .type = mkclasstype(class0), mkfs(class, mkclasstype(class1), fieldvar) ' ∈ instfields(class0), is_valid_ref(str, r, st), class0 ≤ class1 ⊦ r = jvmref, ∃ refs. dups(refs) ∧ refs .first = r ∧ validrefs(str, refs, st[refs .first -- _type] .type, st[refs .first -- mkfs(class, mkclasstype(class1), fieldvar) ', refval(refs .first)])

User applied rule exists right

And obtained the following new goals

Proof step 14:
st[r -- _type] .type = mkclasstype(class0), mkfs(class, mkclasstype(class1), fieldvar) ' ∈ instfields(class0), is_valid_ref(str, r, st), class0 ≤ class1 ⊦ r = jvmref, dups(r ' + r ') ∧ (r ' + r ') .first = r ∧ validrefs (str, r ' + r ', st[(r ' + r ') .first -- _type] .type, st[(r ' + r ') .first -- mkfs(class, mkclasstype(class1), fieldvar) ', refval((r ' + r ') .first)])

Rule argument

[EXRARG : pos: right 2, [extquanttermlist: (r ' + r ') abort:F , discard:T , computed:F ]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (r ' + r ')]]