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Proof step 12 from proof is_obj-put-equiv (previous step)

r1 ∈ st, okval(val, ty), r1 -- mkfs(class, ty, fieldvar) ' ∈ st, okval(st[r1 -- mkfs(class, ty, fieldvar) '], ty) ⊦ class+∃(str, st[r1 -- _type] .type .class) ∧ ¬ is_abstract(st[r1 -- _type] .type .class) ∧ is_obj(r1, st[r1 -- mkfs(class, ty, fieldvar) ', val]) ↔ class+∃(str, st[r1 -- _type] .type .class) ∧ ¬ is_abstract(st[r1 -- _type] .type .class) ∧ is_obj(r1, st), ty = void_type

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 11:
r1 ∈ st, okval(val, ty), r1 -- mkfs(class, ty, fieldvar) ' ∈ st, okval(st[r1 -- mkfs(class, ty, fieldvar) '], ty), class+∃(str, st[r1 -- _type] .type .class) ⊦ ty = void_type, is_obj(r1, st[r1 -- mkfs(class, ty, fieldvar) ', val]) ↔ is_obj(r1, st), is_abstract(st[r1 -- _type] .type .class)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]