mdp

module m
	s : [0..3];

	[] s=0 -> (s'=1);

	[] s=1 -> (s'=2);
	[a] s=1 -> 0.4:(s'=2) + 0.6:(s'=3);

	[b] s=2 -> (s'=1);

	[] s=3 -> (s'=3);
endmodule