YES TPA v.1.0 Result: TRS is terminating Default interpretations for symbols are not printed. For polynomial interpretations and semantic labelling over N\{0,1} defaults are 2 for constants, identity for unary symbols and x+y-2 for binary symbols. For semantic labelling over {0,1} (booleans) defaults are 0 for constants, identity for unary symbols and disjunction for binary symbols. [1] TRS loaded from input file: (1) dx(X) -> one (2) dx(a) -> zero (3) dx(plus(ALPHA,BETA)) -> plus(dx(ALPHA),dx(BETA)) (4) dx(times(ALPHA,BETA)) -> plus(times(BETA,dx(ALPHA)),times(ALPHA,dx(BETA))) (5) dx(minus(ALPHA,BETA)) -> minus(dx(ALPHA),dx(BETA)) (6) dx(neg(ALPHA)) -> neg(dx(ALPHA)) (7) dx(div(ALPHA,BETA)) -> minus(div(dx(ALPHA),BETA),times(ALPHA,div(dx(BETA),exp(BETA,two)))) (8) dx(ln(ALPHA)) -> div(dx(ALPHA),ALPHA) (9) dx(exp(ALPHA,BETA)) -> plus(times(BETA,times(exp(ALPHA,minus(BETA,one)),dx(ALPHA))),times(exp(ALPHA,BETA),times(ln(ALPHA),dx(BETA)))) [2] All the rules of this TRS can be oriented with RPO with the following precedence: Precedence: dx > one dx > zero dx > plus dx > times dx > minus dx > neg dx > div dx > exp dx > two dx > ln ../tpdb/TRS/Rubio/polo2.trs, 0.01, Y Couldn't open file <60>: 60: No such file or directory