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Proof step 23 from proof validrefs-put-badclassfield-01 (previous step)

acc = r1 + refs, r1 = st[r -- fs0 '] .refval, st[r0 -- _type] .type = mkclasstype(class), validrefs(str, acc, fs0 .type, st), is_referencevalue(st[r -- fs0 ']), fs0 ' ∈ instfields(st[r -- _type] .type .class), st[r -- _type] .type ≤ ty, is_obj(str, r, st), is_classtype(st[r -- _type] .type), is_obj(str, r, st[r0 -- fs ', val]), junkref(str, r1, st), r ≠ r0 ∨ fs0 ≠ fs ⊦ acc = [], fs ' = _type, r = jvmref, validrefs(str, acc, fs0 .type, st[r0 -- fs ', val]), r ∈ acc .butlast, dups(acc .butlast), junkref(str, r, st[r0 -- fs ', val]), junkref(str, r, st), fs ' ∈ instfields(class)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 22:
st[r0 -- _type] .type = mkclasstype(class), is_referencevalue(st[r -- fs0 ']), fs0 ' ∈ instfields(st[r -- _type] .type .class), st[r -- _type] .type ≤ ty, is_obj(str, r, st), is_classtype(st[r -- _type] .type), is_obj(str, r, st[r0 -- fs ', val]), junkref(str, st[r -- fs0 '] .refval, st), validrefs(str, st[r -- fs0 '] .refval ' + refs, fs0 .type, st), r ≠ r0 ∨ fs0 ≠ fs ⊦ fs ' = _type, r = jvmref, junkref(str, r, st[r0 -- fs ', val]), junkref(str, r, st), fs ' ∈ instfields(class), validrefs(str, st[r -- fs0 '] .refval ' + refs, fs0 .type, st[r0 -- fs ', val]), r ∈ (st[r -- fs0 '] .refval ' + refs) .butlast, dups((st[r -- fs0 '] .refval ' + refs) .butlast)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ' + refs ≠ []], [CSIMPSEQ : ⊦ r + refs = r ' + refs])]]