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Proof step 25 from proof fits-put-01 (previous step)

is_obj(str, r, st), st[r -- sk] = refval(r0), st[r -- _type] .type = mkclasstype(class), sk ∈ instfields(class), is_referencevalue(st[r0 -- sks0]), r1 ∈ st, fits(r0, sks0, st), okarray(r1, byte_type, st), is_obj(str, r, st), is_valid_ref(str, r0, st) → r0 = jvmref ∨ junkref(str, r0, st) ⊦ r = r1, r = jvmref, r1 = jvmref, sks0 = [], fits(r0, sks0, st[r1 -- i ', byteval(by)]), ∃ fs. fs ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs ']) ∧ st[r -- fs '] .refval ≠ jvmref ∧ (¬ st[st[r -- fs '] .refval -- _type] .type ≤ fs .type ∨ junkref(str, st[r -- fs '] .refval, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 24:
st[r -- _type] .type = mkclasstype(class), st[r -- sk] = refval(r0), is_obj(str, r, st), okarray(r1, byte_type, st), fits(r0, sks0, st), r1 ∈ st, is_referencevalue(st[r0 -- sks0]), sk ∈ instfields(class), is_valid_ref(str, r0, st) → r0 = jvmref ∨ junkref(str, r0, st) ⊦ sks0 = [], r1 = jvmref, r = jvmref, r = r1, fits(r0, sks0, st[r1 -- i ', byteval(by)]), ∃ fs. fs ' ∈ instfields(class) ∧ is_referencevalue(st[r -- fs ']) ∧ st[r -- fs '] .refval ≠ jvmref ∧ (¬ st[st[r -- fs '] .refval -- _type] .type ≤ fs .type ∨ junkref(str, st[r -- fs '] .refval, st))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ mkclasstype(class) .class = class])]]