VARIABLES T P E

SUBTYPE T Producer<P>
SUBTYPE P Producer<E>
SUBTYPE E Producer<P>

type parameter bounds:
T <: Producer<P>*, <: Producer<Producer<E>>*, <: Producer<Producer<Producer<P>>>*
P <: Producer<E>*
E <: Producer<P>*

status:
-hasCannotCaptureTypesError: false
-hasConflictingConstraints: false
-hasContradiction: false
-hasErrorInConstrainingTypes: false
-hasTypeConstructorMismatch: false
-hasTypeInferenceIncorporationError: false
-hasUnknownParameters: true
-hasViolatedUpperBound: false
-isSuccessful: false

result:
T=???
P=???
E=???