CaptureState.bpl(29,1): Error BP5003: A postcondition might not hold on this return path.
CaptureState.bpl(10,3): Related location: This is the postcondition that might not hold.
Execution trace:
    CaptureState.bpl(14,3): anon0
    CaptureState.bpl(18,5): anon4_Then
    CaptureState.bpl(26,5): anon3
*** MODEL
$mv_state_const -> 3
%lbl%@293 -> false
%lbl%+112 -> true
%lbl%+114 -> true
%lbl%+118 -> true
%lbl%+148 -> true
F -> T@FieldName!val!0
Heap -> T@[Ref,FieldName]Int!val!0
m -> **m
m@0 -> -276
m@1 -> -275
m@3 -> -275
r -> **r
r@0 -> -550
this -> T@Ref!val!0
x -> 719
y -> **y
Select_[Ref,FieldName]$int -> {
  T@[Ref,FieldName]Int!val!0 T@Ref!val!0 T@FieldName!val!0 -> -276
  else -> -276
}
tickleBool -> {
  true -> true
  false -> true
  else -> true
}
$mv_state -> {
  3 0 -> true
  3 1 -> true
  3 2 -> true
  3 5 -> true
  else -> true
}
*** STATE <initial>
  Heap -> T@[Ref,FieldName]Int!val!0
  this -> T@Ref!val!0
  x -> 719
  y -> **y
  r -> **r
  m -> **m
*** END_STATE
*** STATE top
*** END_STATE
*** STATE then
  m -> -276
*** END_STATE
*** STATE postUpdate0
  m -> -275
*** END_STATE
*** STATE end
  r -> -550
  m -> 7
*** END_STATE
*** END_MODEL

Boogie program verifier finished with 0 verified, 1 error