LabeledSystem not able to read OUTCAR in some instances

[kimiaGF]

In the given code for parsing OUTCARs for multiple systems:

fs=glob('path/to/*/OUTCAR')  
ms=MultiSystems()

for f in fs:
    try:
        ls=LabeledSystem(f)
    except:
        print(f)
    if len(ls)>0:
        ms.append(ls)

I wanted to check one of the printed (exception) files and see why specifically LabeledSystem was not able to read it since I am losing a good amount of data this way. When testing one of these files manually with LabeledSystem('path/to/failed/OUTCAR'), I get the following error:

Traceback (most recent call last):

  File "/var/folders/5d/7cky48h14mg5gvzzj1hyml1r0000gn/T/ipykernel_74921/2208943671.py", line 1, in <module>
    ts = LabeledSystem('converged_data/B11-Cp-CBC/V71/OUTCAR')

  File "/Users/kimiaghaffari/opt/anaconda3/envs/ML/lib/python3.9/site-packages/dpdata/system.py", line 883, in __init__
    self.from_fmt(file_name, fmt, type_map=type_map, begin= begin, step=step, **kwargs)

  File "/Users/kimiaghaffari/opt/anaconda3/envs/ML/lib/python3.9/site-packages/dpdata/system.py", line 120, in from_fmt
    return self.from_fmt_obj(load_format(fmt), file_name, **kwargs)

  File "/Users/kimiaghaffari/opt/anaconda3/envs/ML/lib/python3.9/site-packages/dpdata/system.py", line 890, in from_fmt_obj
    data = fmtobj.from_labeled_system(file_name, **kwargs)

  File "/Users/kimiaghaffari/opt/anaconda3/envs/ML/lib/python3.9/site-packages/dpdata/plugins/vasp.py", line 65, in from_labeled_system
    = dpdata.vasp.outcar.get_frames(file_name, begin=begin, step=step)

  File "/Users/kimiaghaffari/opt/anaconda3/envs/ML/lib/python3.9/site-packages/dpdata/vasp/outcar.py", line 69, in get_frames
    coord, cell, energy, force, virial, is_converge = analyze_block(blk, ntot, nelm)

  File "/Users/kimiaghaffari/opt/anaconda3/envs/ML/lib/python3.9/site-packages/dpdata/vasp/outcar.py", line 119, in analyze_block
    tmp_v = [float(ss) for ss in ii.split()[2:8]]

  File "/Users/kimiaghaffari/opt/anaconda3/envs/ML/lib/python3.9/site-packages/dpdata/vasp/outcar.py", line 119, in <listcomp>
    tmp_v = [float(ss) for ss in ii.split()[2:8]]

ValueError: could not convert string to float: '4199.91072-16668.21343'

I've linked the OUTCAR that gives this error to this post if anyone wants to replicate this. Please let me know what could be the cause of this, whether it is the LabeledSystem function or the OUTCAR that is the issue.

V71.zip