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Proof step 80 from proof validrefs-putbyte-field (previous step)

is_obj(str, r0, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]) ∧ (st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)][r0 -- _type]) .type ≤ ty, refs1 = [] ∨ (∃ fs. fs ' ∈ instfields((st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)][r0 -- _type]) .type .class) ∧ is_referencevalue(st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)][r0 -- fs ']) ∧ refs1 .first = (st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)][r0 -- fs ']) .refval ∧ validrefs(str, refs1, fs .type, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)])), is_valid_ref(str, r0, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]), st[r0 -- _type] .type ≤ ty, ∀ by, fieldvar, class, r, st, ty, str, refs0. # refs0 < # (r0 + refs1) → ( validrefs(str, refs0, ty, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]) → refs0 = [] ∨ junkref(str, refs0 .first, st) ∨ validrefs(str, refs0, ty, st)) ⊦ r0 = jvmref, junkref(str, r0, st), validrefs(str, r0 ' + refs1, ty, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 79:
is_obj(str, r0, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]), st[r0 -- _type] .type ≤ ty, refs1 = [] ∨ fs ' ∈ instfields(st[r0 -- _type] .type .class) ∧ is_referencevalue(st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)][r0 -- fs ']) ∧ refs1 .first = (st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)][r0 -- fs ']) .refval ∧ validrefs(str, refs1, fs .type, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]), ∀ by, fieldvar, class, r, st, ty, str, refs0. # refs0 < # (r0 + refs1) → ( validrefs(str, refs0, ty, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]) → refs0 = [] ∨ junkref(str, refs0 .first, st) ∨ validrefs(str, refs0, ty, st)) ⊦ r0 = jvmref, junkref(str, r0, st), validrefs(str, r0 ' + refs1, ty, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_obj(str, r, st) → is_valid_ref(str, r, st)], [CSIMPSEQ : ⊦ (st[ r0 -- mkfs (class, byte_type, fieldvar) ', val] [r -- _type ] ) = st[r -- _type]])]]