YES ---- CR(R) ---- Hot decreasingness. R: -(+(x(),-(x()))) -> 0() +(x(),-(x())) -> 0() 0() -> -(0()) C: Label: [-(+(x(),-(x()))) -> 0()] = 1 [+(x(),-(x())) -> 0()] = 0 [0() -> -(0())] = 0