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Proof step 41 from proof validrefs-del-junkrefs (previous step)

junkrefs(str, r0 ' + r ', ty, st -- r), st[r0 -- _type] .type ≤ ty, is_obj(str, r0, st) ∨ is_array(str, r0, st) ⊦ r0 = jvmref, r = r0, validrefs(str, r0 ' + r ', ty, st), junkref(str, r0, st)

User applied rule case distinction

And obtained the following new goals

Proof step 23:
is_obj(str, r0, st), junkrefs(str, r0 ' + r ', ty, st -- r), st[r0 -- _type] .type ≤ ty ⊦ r0 = jvmref, r = r0, validrefs(str, r0 ' + r ', ty, st), junkref(str, r0, st)
Proof step 40:
is_array(str, r0, st), junkrefs(str, r0 ' + r ', ty, st -- r), st[r0 -- _type] .type ≤ ty ⊦ r0 = jvmref, r = r0, validrefs(str, r0 ' + r ', ty, st), junkref(str, r0, st)

Rule argument

[CASEDARG : pos: left 3, ()]

Additional information

[[CONCRETESIMPRULES : ()]]