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Proof step 20 from proof validrefnotnull-putbar (previous step)

okbytearray(r0, st), validrefnotnull(str, r, ty, st), ∀ r0, st, str, r, ty, i. okbytearray(r0, st) ∧ validrefnotnull(str, r, ty, st) → r = r0 ∨ r = jvmref ∨ validrefnotnull(str, r, ty, putByteArray(bytes0, r0, i, st)) ⊦ r = r0, r = jvmref, validref(str, r, ty, putByteArray(bytes0, r0, i + 1, st)[r0 -- i ', byteval(by)]), validref(str, r, ty, putByteArray(bytes0, r0, i + 1, st)) ∧ okval(byteval(by), st[r0 -- _type] .type .type)

User applied rule case distinction

And obtained the following new goals

Proof step 6:
okbytearray(r0, st), validrefnotnull(str, r, ty, st), ∀ r0, st, str, r, ty, i. okbytearray(r0, st) ∧ validrefnotnull(str, r, ty, st) → r = r0 ∨ r = jvmref ∨ validrefnotnull(str, r, ty, putByteArray(bytes0, r0, i, st)) ⊦ validref(str, r, ty, putByteArray(bytes0, r0, i + 1, st)), r = r0, r = jvmref, validref(str, r, ty, putByteArray(bytes0, r0, i + 1, st)[r0 -- i ', byteval(by)])
Proof step 19:
okbytearray(r0, st), validrefnotnull(str, r, ty, st), ∀ r0, st, str, r, ty, i. okbytearray(r0, st) ∧ validrefnotnull(str, r, ty, st) → r = r0 ∨ r = jvmref ∨ validrefnotnull(str, r, ty, putByteArray(bytes0, r0, i, st)) ⊦ okval(byteval(by), st[r0 -- _type] .type .type), r = r0, r = jvmref, validref(str, r, ty, putByteArray(bytes0, r0, i + 1, st)[r0 -- i ', byteval(by)])

Rule argument

[CASEDARG : pos: right 4, ()]

Additional information

[[CONCRETESIMPRULES : ()]]