Qhull internal error

[robyngit]

During testing, I came across a Qhull internal error in 5 out of 7554 instances of converting geopackage files to b3dm tiles. The conversion consistently fails with the same input files, but I couldn't see anything out of the ordinary with them. The problem files are attached & plotted below, and an example of the error message is at the bottom:

Files that cause the Qhull error

qhull_error_files.zip

Plots of files that cause the Qhull error

Qhull error message

QH6332 Qhull precision warning: repartition point p1319 from f890 as a outside point above a hidden facet f890 dist 1.1e-05 nearest vertices 29
Qhull internal error (qh_partitioncoplanar): infinite loop due to recursive call to qh_partitionpoint.  Repartition point p1278 from f890 as a outside point dist 1.1e-05 nearest vertices 29
ERRONEOUS FACET:
- f890
    - flags: bottom simplicial
    - normal:   -0.3613  -0.1378   0.9222
    - offset:   -6359955
    - center: -2311152.708938068 -881576.959577709 5859236.765065852 
    - outside set(furthest p1278):
      p1375:  -2.311e+06 -8.816e+05 5.859e+06
      p1319:  -2.311e+06 -8.816e+05 5.859e+06
      p1319:  -2.311e+06 -8.816e+05 5.859e+06
      p1278:  -2.311e+06 -8.816e+05 5.859e+06
    - furthest distance= 1.1e-05
    - coplanar set(furthest p1375):
      p1375:  -2.311e+06 -8.816e+05 5.859e+06
      furthest distance= 9.3e-10
    - vertices: p1320(v173) p1430(v91) p1317(v9)
    - neighboring facets: f845 f891 f5162

While executing:  | qhull Qt
Options selected for Qhull 2018.0.1.r 2018/12/28:
  run-id 1494788778  Qtriangulate  _pre-merge  _zero-centrum
  _max-width 1.6e+02  Error-roundoff 7.4e-09  _one-merge 5.2e-08
  _near-inside 2.6e-07  Visible-distance 1.5e-08  U-max-coplanar 1.5e-08
  Width-outside 3e-08  _wide-facet 8.9e-08  _narrow-hull 3e-12
Last point added to hull was p697.  Last merge was #1156.

At error exit:

Convex hull of 1477 points in 3-d:

  Number of vertices: 1416
  Number of coplanar points: 6
  Number of facets: 2247
  Number of non-simplicial facets: 482

Statistics for:  | qhull Qt

  Number of points processed: 1420
  Number of hyperplanes created: 7369
  Number of distance tests for qhull: 59363
  Number of distance tests for merging: 54376
  Number of distance tests for checking: 0
  Number of merged facets: 1156
  Maximum distance of merged point above facet: 9.7e-08 (1.6x)
  Maximum distance of merged vertex below facet: -8.7e-08 (1.5x)