Data-based synthesis should support state/event exclusion plant invariants.

Data synthesis supports state/event exclusion requirement invariants, but not the plant equivalent.

Why do we want this?

Plant invariants are a nice way to model physical interactions between components:

plant def Cylinder():
  controllable c_extend, c_retract, c_stop;
  location Idle:
    initial; marked;
    edge c_extend  goto Extending;
    edge c_retract goto Retracting;
  location Extending:
    edge c_stop goto Idle;
  location Retracting:
    edge c_stop goto Idle;
end

plant def Sensor():
  uncontrollable u_on, u_off;
  location Off:
    initial; marked;
    edge u_on goto On;
  location On:
    initial; marked;
    edge u_off goto Off;
end

Cylinder1 : Cylinder();
SensorExtended : Sensor();
SensorRetracted: Sensor();

plant SensorExtended.u_on  needs Cylinder1.Extending;
plant SensorExtended.u_off needs Cylinder1.Retracting;

plant SensorRetracted.u_on  needs Cylinder1.Retracting;
plant SensorRetracted.u_off needs Cylinder1.Extending;

How can we do this?

The method convertPlantReqAuts linearizes the automata. When the edge guards are converted, the plant invariants can be added in the guards of the original/uncontrolled system, no additional/special work is needed. Haven't yet checked which simplification w.r.t. the supervisor should be added.

Remarks

1. It is possible to first do a cif2cif transformation to convert state/event plant invariants to a plant automaton and then do synthesis. Personally, I think we should be able to support these without first doing a conversion.
2. We also do not support state plant invariants. However, implementing these might be more involved and should be a separate issue.