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Proof step 19 from proof sharing-pathex-field-self-01 (previous step)

refs0 = [], 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) ⊦ (r ' + refs0) .last = jvmref, hasSharing((r ' + refs0) .last, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
r = st[r -- fs '] .refval, is_classtype(st[r -- _type] .type), fs ' ∈ instfields(st[r -- _type] .type .class), validrefs(str, r ', mkclasstype(`java.lang.Object' .class), st) ⊦ r = jvmref, hasSharing(r, st)

Rule argument

[emptyarg]

Additional information

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