YES
(ignored inputs)COMMENT doi:10.1145/2528934 [109] Example 3.5
Rewrite Rules:
   [ a -> b,
     a -> f(a),
     f(?x) -> ?x ]
Apply Direct Methods...
Inner CPs:
   [  ]
Outer CPs:
   [ b = f(a) ]
Overlay, check Innermost Termination...
unknown Innermost Terminating
unknown Knuth & Bendix
Linear
Development Closed
Direct Methods: CR

Combined result: CR
502.trs: Success(CR)
(0 msec.)