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Proof step 21 from proof putbar-classfield-onlymod (previous step)

is_obj(str, r, st) ∧ st[r -- _type] .type ≤ mkclasstype(class), st[r -- _type] .type = mkclasstype(class), st[r -- fs '] = refval(r1), okbytearray(r1, st), fs ' ∈ instfields(class), is_obj(str, r, st) ⊦ st[r1 -- sk0] = (putByteArray(bytes, r1, st)[r1 -- sk0]), r = r1, r = jvmref, junkref(str, r, st), r1 ' = [] ∨ (∃ fs. fs ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs ']) ∧ r1 ' .first = st[r -- fs '] .refval ∧ validrefs(str, r1 ', fs .type, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 20:
st[r -- fs '] = refval(r1), st[r -- _type] .type = mkclasstype(class), is_obj(str, r, st), fs ' ∈ instfields(class), okbytearray(r1, st) ⊦ r = jvmref, r = r1, st[r1 -- sk0] = (putByteArray(bytes, r1, st)[r1 -- sk0]), junkref(str, r, st), ∃ fs0. fs0 ' ∈ instfields(class) ∧ is_referencevalue(st[r -- fs0 ']) ∧ r1 = st[r -- fs0 '] .refval ∧ validrefs(str, st[r -- fs0 '] .refval ', fs0 .type, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ mkclasstype(class) .class = class], [CSIMPSEQ : ⊦ class ≤ class], [CSIMPSEQ : ⊦ mkclasstype(class1) ≤ mkclasstype(class2) ↔ class1 ≤ class2], [CSIMPSEQ : ⊦ r ' .first = r], [CSIMPSEQ : ⊦ r ' ≠ []])]]