ifort 14: warning #13003: message verification failed for: 25216; reverting to internal message

sh-4.1$ ifort --version
ifort (IFORT) 14.0.0 20130728
Copyright (C) 1985-2013 Intel Corporation. All rights reserved.

sh-4.1$ cat 4a.f90
implicit none
real :: r(3,2)[2,*]
r = this_image() * &
reshape((/ 1,2,3,4,5,6 /),(/ 3,2 /))
if ( this_image() .eq. 1 ) &
sync images (3)
if ( this_image() .eq. 3) then
sync images (1)
r(1,1) = r(1,2)[1,1]
end if
write (*,"(a,i0,a,6f4.0)") "image ", &
this_image(), ": r=", r
end
sh-4.1$ ifort -coarray -warn all 4a.f90
warning #13003: message verification failed for: 25216; reverting to internal message
sh-4.1$

What does this warning mean?

Thanks

Anton