obtained WCE does not match the given error threshold! obtained_wce

[AmeZap05]

While I was testing the multilevel template, I've just notice that
If I ran the following command:

python3 main.py input/ver/adder_i4_o3.v -app=input/ver/adder_i4_o3.v --grid  -mode=4 -et=3 --partial -lpp=7 -pit=7  --clean --parallel --multilevel  -lv=2

with npl set to 1 (raw 810, template manager)

the programm will continue to approximate the circuit up to reach 0 area with wce = 4 even if et = 3.
On the other side if I ran the same command, but with npl set to 2, I obtain the following error:

ERROR!!! The obtained WCE does not match the given error threshold!
obtained_wce = 6 > ET = 1
ERROR!!! The obtained WCE does not match the given error threshold!
obtained_wce = 6 > ET = 1

notice that this append also for the shared template