Z3 version 4.4.1 gives semingly incorrect model

[sdasgup3]

With the following Z3 query:

(declare-const A (_ BitVec 64))
(declare-const B (_ BitVec 64))
(push)  
(assert

(>= (+ (bv2int A) (bv2int B)) (^ 2 32))
)  
(check-sat)
(get-model)
(pop)

With Z3 version 4.4.1, I am getting a model like

sat
(model 
  (define-fun A () (_ BitVec 64)
    #x0000000000000000)
  (define-fun B () (_ BitVec 64)
    #x0000000000000000)
)

With version Z3 version 4.5.1 I am getting correct interpretation.
Is this fixed as per #250 ? Or there is something I am doing wrong.

[NikolajBjorner]

There is no support for (very) old versions of Z3. Use newer versions where the models are correct.