NO

Prover = TRS(tech=GUIDED_UNF, nb_unfoldings=unlimited, unfold_variables=true, strategy=LEFTMOST_NE)

** BEGIN proof argument **
The following rule was generated while unfolding the analyzed TRS:
[iteration = 2] f(g(_0,_1),_0,g(_0,_1)) -> f(g(_0,_1),_0,g(_0,_1))
Let l be the left-hand side and r be the right-hand side of this rule.
Let p = epsilon, theta1 = {} and theta2 = {}.
We have r|p = f(g(_0,_1),_0,g(_0,_1)) and theta2(theta1(l)) = theta1(r|p).
Hence, the term theta1(l) = f(g(_0,_1),_0,g(_0,_1)) loops w.r.t. the analyzed TRS.
** END proof argument **

** BEGIN proof description **
## Searching for a generalized rewrite rule
(a rule whose right-hand side contains a variable
that does not occur in the left-hand side)...
No generalized rewrite rule found!

## Searching for a loop by unfolding (unfolding of variable subterms: ON)...
# Iteration 0: no loop detected, 1 unfolded rule generated.
# Iteration 1: no loop detected, 5 unfolded rules generated.
# Iteration 2: loop detected, 1 unfolded rule generated.
Here is the successful unfolding. Let IR be the TRS under analysis.
L0 = f^#(g(_0,_1),_0,_2) -> f^#(_2,_2,_2) is in U_IR^0.
Let p0 = [0].
The subterm at position p0 in the left-hand side of the rule of L0 unifies with
the subterm at position p0 in the right-hand side of the rule of L0.
==> L1 = f^#(g(_0,_1),_0,g(_0,_1)) -> f^#(g(_0,_1),g(_0,_1),g(_0,_1)) is in U_IR^1.
Let p1 = [1].
We unfold the rule of L1 forwards at position p1
with the rule g(_0,_1) -> _0.
==> L2 = f^#(g(_0,_1),_0,g(_0,_1)) -> f^#(g(_0,_1),_0,g(_0,_1)) is in U_IR^2.

** END proof description **

Proof stopped at iteration 2
Number of unfolded rules generated by this proof = 7
Number of unfolded rules generated by all the parallel proofs = 7