Possible sample files to check basic functionality

Hello everyone,
I downloaded and installed deepspeech
pip3 install deepspeech
and the model using
wget -c https://github.com/mozilla/DeepSpeech/releases/download/v0.4.1/deepspeech-0.4.1-models.tar.gz
To check if it is working I used self made and publicly available wav files, e.g. man_wb1.wav from https://github.com/EN10/DeepSpeech
The output is always the same:
jh186076@MUSJH186076-933 DeepSpeech (master) $ deepspeech --model models/output_graph.pbmm --alphabet models/alphabet.txt --lm models/lm.binary --trie models/trie --audio man1_wb.wav
Loading model from file models/output_graph.pbmm
TensorFlow: v1.12.0-10-ge232881c5a
DeepSpeech: v0.4.1-0-g0e40db6
2019-04-29 14:37:41.623082: I tensorflow/core/platform/cpu_feature_guard.cc:141] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2 FMA
Loaded model in 0.0102s.
Loading language model from files models/lm.binary models/trie
Loaded language model in 1.68s.
Running inference.

Inference took 3.477s for 8.208s audio file.

What am I doing wrong? Any help or advice how to further investigate this behaviour would be much appreciated.

Your console output is improperly formatted, can you fix that and explain what is wrong exactly ?