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Proof step 8 from proof validrefs-addobj-junkref (previous step)

r2 ≠ jvmref, st[r1 -- mkfs(class1, ty1, fieldvar) '] = refval(r2), validrefs(str, r2 ' + refs, ty1, addobj(r, class, fis, st)), mkfs(class1, ty1, fieldvar) ' ∈ instfields(st[r1 -- _type] .type .class), st[r1 -- _type] .type ≤ ty0, newref(r, st), is_obj(str, r1, st), ∀ str0, ty, r0, class0, fis0, st0. validrefs(str0, r2 ' + refs, ty, addobj(r0, class0, fis0, st0)) ∧ newref(r0, st0) ∧ (r0 = r2 ∨ r0 ∈ refs) → junkref(str0, r2, st0) ⊦ r = r1, r = jvmref, r1 = jvmref, r ≠ r2 ∧ ¬ r ∈ refs, r2 ≠ jvmref ∧ (¬ st[r2 -- _type] .type ≤ ty1 ∨ junkref(str, r2, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
st[r1 -- mkfs(class1, ty1, fieldvar) '] = refval(r2), validrefs(str, r2 ' + refs, ty1, addobj(r, class, fis, st)), mkfs(class1, ty1, fieldvar) ' ∈ instfields(st[r1 -- _type] .type .class), st[r1 -- _type] .type ≤ ty0, newref(r, st), is_obj(str, r1, st), st[r2 -- _type] .type ≤ ty1, r ∈ refs, ∀ str0, ty, r0, class0, fis0, st0. validrefs(str0, r2 ' + refs, ty, addobj(r0, class0, fis0, st0)) ∧ newref(r0, st0) ∧ (r0 = r2 ∨ r0 ∈ refs) → junkref(str0, r2, st0) ⊦ r = r1, r = jvmref, r1 = jvmref, r2 = jvmref, r = r2, junkref(str, r2, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ newref(r, st) → junkref(str, r, st)])]]