Bug in DCS
Building D makes synthesis crash.
M = (a -> AUX), AUX = (b -> AUX | c -> AUX).
controllerSpec G1 = { reachability controllable = {a} marking = {b} }
controllerSpec G2 = { controllable = {a} marking = {b} }
controller ||C = M~{G1}. heuristic ||D = M~{G2}.