data whileTestState  : Set where
  s1 : whileTestState
  s2 : whileTestState
  sf : whileTestState


whileTestStateP : whileTestState !$\rightarrow$! Envc !$\rightarrow$!  Set
whileTestStateP s1 env = (vari env !$\equiv$! 0) !$\wedge$! (varn env !$\equiv$! c10 env)
whileTestStateP s2 env = (varn env + vari env !$\equiv$! c10 env)
whileTestStateP sf env = (vari env !$\equiv$! c10 env)