testActivePair fails

Summary from jenkins:

Running ./testActivePair -n 6 -r 1 -d 0 -f active
[00000.0] main: Seed used for RNG: 1709851327
Tolerances read from file
Checking all particles in the file.
No differences found
Tolerances read from file
Checking all particles in the file.
Relative difference larger than tolerance (2.400000e-03) for particle 17089, column h_dt:
    File 1:           a = -1.701384e-05
    File 2:           b = -1.692253e-05
Difference: |a-b|/|a+b| = 2.690624e-03

Accuracy test failed


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./configure --disable-optimization
gcc 7.3.0