YES
0 QTRS
↳1 QTRSRRRProof (⇔, 0 ms)
↳2 QTRS
↳3 RisEmptyProof (⇔, 0 ms)
↳4 YES
*(x, *(y, z)) → *(*(x, y), z)
*(x, x) → x
With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly:
POL(*(x1, x2)) = 2 + x1 + 2·x2
*(x, *(y, z)) → *(*(x, y), z)
*(x, x) → x