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Proof step 46 from proof pathex-class (previous step)

refs .first = st[r -- fs '] .refval, is_obj(str, r, st), is_referencevalue(st[r -- fs ']), fs ' ∈ instfields(st[r -- _type] .type .class), st[refs .first -- _type] .type ≤ fs .type, validrefs(str, refs, st[refs .first -- _type] .type, st) ⊦ r = refs .last, refs .first = jvmref, refs = [], ∃ refs0. refs0 ≠ [] ∧ refs0 .first = r ∧ refs0 .last = refs .last ∧ validrefs(str, refs0, st[refs0 .first -- _type] .type, st)

User applied rule exists right

And obtained the following new goals

Proof step 45:
refs .first = st[r -- fs '] .refval, is_obj(str, r, st), is_referencevalue(st[r -- fs ']), fs ' ∈ instfields(st[r -- _type] .type .class), st[refs .first -- _type] .type ≤ fs .type, validrefs(str, refs, st[refs .first -- _type] .type, st) ⊦ r = refs .last, refs .first = jvmref, refs = [], r ' + refs ≠ [] ∧ (r ' + refs) .first = r ∧ (r ' + refs) .last = refs .last ∧ validrefs(str, r ' + refs, st[(r ' + refs) .first -- _type] .type, st)

Rule argument

[EXRARG : pos: right 4, [extquanttermlist: (r ' + refs) abort:F , discard:T , computed:F ]]

Additional information

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