This is BibTeX, Version 0.99d (TeX Live 2022)
Capacity: max_strings=200000, hash_size=200000, hash_prime=170003
The top-level auxiliary file: paper.aux
The style file: IEEEtran.bst
Illegal, another \bibstyle command---line 53 of file paper.aux
 : \bibstyle
 :          {plain}
I'm skipping whatever remains of this command
Reallocated singl_function (elt_size=4) to 100 items from 50.
Reallocated singl_function (elt_size=4) to 100 items from 50.
Reallocated singl_function (elt_size=4) to 100 items from 50.
Reallocated wiz_functions (elt_size=4) to 6000 items from 3000.
Reallocated singl_function (elt_size=4) to 100 items from 50.
Database file #1: refs.bib
-- IEEEtran.bst version 1.14 (2015/08/26) by Michael Shell.
-- http://www.michaelshell.org/tex/ieeetran/bibtex/
-- See the "IEEEtran_bst_HOWTO.pdf" manual for usage information.

Done.
You've used 11 entries,
            4087 wiz_defined-function locations,
            888 strings with 9008 characters,
and the built_in function-call counts, 6667 in all, are:
= -- 561
> -- 112
< -- 37
+ -- 60
- -- 20
* -- 310
:= -- 1112
add.period$ -- 24
call.type$ -- 11
change.case$ -- 12
chr.to.int$ -- 81
cite$ -- 11
duplicate$ -- 514
empty$ -- 568
format.name$ -- 25
if$ -- 1525
int.to.chr$ -- 0
int.to.str$ -- 11
missing$ -- 85
newline$ -- 64
num.names$ -- 11
pop$ -- 197
preamble$ -- 1
purify$ -- 0
quote$ -- 2
skip$ -- 529
stack$ -- 0
substring$ -- 220
swap$ -- 365
text.length$ -- 10
text.prefix$ -- 0
top$ -- 5
type$ -- 11
warning$ -- 0
while$ -- 27
width$ -- 13
write$ -- 133
(There was 1 error message)