single precision fails for smallPoolFire3D

I am trying to run fireFoam on the tutorials/combustion/fireFoam/LES/smallPoolFire3D case in single precision. The case fails. I've attached a log file for both fireFoam and checkMesh (which also fails). I've also attached my etc/bashrc file. I am using OpenFOAM-v1806, commit 71942d682. For the record, smallPoolFire2D also fails.

log.checkMesh

log.fireFoam

bashrc

## Reattaching the author to the issue ticket: @kvm ##