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Proof step 18 from proof validrefs-del-junkrefs (previous step)

fs = mkfs(class, ty0, fieldvar), is_referencevalue(st[r0 -- fs ']), fs ' ∈ instfields(st[r0 -- _type] .type .class), is_obj(str, r0, st), st[r0 -- _type] .type ≤ ty, junkrefs(str, st[r0 -- fs '] .refval ', ty0, st -- st[r0 -- fs '] .refval) ⊦ st[r0 -- fs '] .refval = r0, r0 = jvmref, junkref(str, r0, st), ∃ fs0. fs0 ' ∈ instfields(st[r0 -- _type] .type .class) ∧ is_referencevalue(st[r0 -- fs0 ']) ∧ st[r0 -- fs '] .refval = st[r0 -- fs0 '] .refval ∧ validrefs(str, st[r0 -- fs0 '] .refval ', fs0 .type, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 17:
is_referencevalue(st[r0 -- mkfs(class, ty0, fieldvar) ']), mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r0 -- _type] .type .class), is_obj(str, r0, st), st[r0 -- _type] .type ≤ ty, junkrefs(str, st[r0 -- mkfs(class, ty0, fieldvar) '] .refval ', ty0, st -- st[r0 -- mkfs(class, ty0, fieldvar) '] .refval) ⊦ st[r0 -- mkfs(class, ty0, fieldvar) '] .refval = r0, r0 = jvmref, junkref(str, r0, st), ∃ fs0. fs0 ' ∈ instfields(st[r0 -- _type] .type .class) ∧ is_referencevalue(st[r0 -- fs0 ']) ∧ st[r0 -- mkfs(class, ty0, fieldvar) '] .refval = st[r0 -- fs0 '] .refval ∧ validrefs(str, st[r0 -- fs0 '] .refval ', fs0 .type, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]