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Proof step 66 from proof sharing-pathex-field-self-01 (previous step)

r = st[(r ' + refs0) .last -- fs '] .refval, is_classtype(st[(r ' + refs0) .last -- _type] .type), fs ' ∈ instfields(st[(r ' + refs0) .last -- _type] .type .class), validrefs(str, r ' + refs0, mkclasstype(`java.lang.Object' .class), st) ⊦ refs0 = [], (r ' + refs0) .last = jvmref, hasSharing((r ' + refs0) .last, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 65:
fs ' ∈ instfields(st[refs0 .last -- _type] .type .class), is_classtype(st[refs0 .last -- _type] .type), validrefs(str, st[refs0 .last -- fs '] .refval ' + refs0, mkclasstype(`java.lang.Object' .class), st) ⊦ refs0 .last = jvmref, refs0 = [], hasSharing(refs0 .last, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPNAMEDSEQ : list, references, a, ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPNAMEDSEQ : list-last, references, l-02, ⊦ refs ≠ [] → (r ' + refs) .last = refs .last])]]