VTK mesh redistribution with default partitionRefinement (segmentatation fault)

Describe the bug
Running GEOS in serial providing the mesh as VTK produces segmentation fault if the number of partitioning refinement iterations (partitionRefinement) is not 0 (default value 1).

To Reproduce
See incompressible single-phase flow example below.

@francoishamon, @klevzoff, @untereiner : have you observed this behavior before?

<?xml version="1.0" ?>

<Problem>
  <Solvers
    gravityVector="{ 0.0, 0.0, 0.0 }">
    <SinglePhaseFVM
      name="SinglePhaseFlow"
      logLevel="1"
      discretization="singlePhaseTPFA"
      targetRegions="{ Domain }">
      <NonlinearSolverParameters
        newtonTol="1.0e-6"
        newtonMaxIter="8"/>
      <LinearSolverParameters
        directParallel="0"/>
    </SinglePhaseFVM>
  </Solvers>

  <Mesh>
    <VTKMesh
      name="mesh"
      partitionRefinement="1"
      file="mesh.vtk"/>
  </Mesh>

  <Events
    maxTime="1.0">
    <PeriodicEvent
      name="outputs"
      timeFrequency="1.0"
      target="/Outputs/vtkOutput"/>

    <PeriodicEvent
      name="solverApplications"
      forceDt="1.0"
      target="/Solvers/SinglePhaseFlow"/>

  </Events>

  <NumericalMethods>
    <FiniteVolume>
      <TwoPointFluxApproximation
        name="singlePhaseTPFA"/>
    </FiniteVolume>
  </NumericalMethods>

  <ElementRegions>
    <CellElementRegion
      name="Domain"
      cellBlocks="{ 0_hexahedra, 1_hexahedra, 2_hexahedra }"
      materialList="{ water, rock }"/>
  </ElementRegions>

  <Constitutive>
    <CompressibleSinglePhaseFluid
      name="water"
      defaultDensity="1000"
      defaultViscosity="0.001"
      referencePressure="0.0"
      compressibility="0.0"
      viscosibility="0.0"/>

    <CompressibleSolidConstantPermeability
      name="rock"
      solidModelName="nullSolid"
      porosityModelName="rockPorosity"
      permeabilityModelName="rockPerm"/>

    <NullModel
      name="nullSolid"/>

    <PressurePorosity
      name="rockPorosity"
      defaultReferencePorosity="0.05"
      referencePressure="0.0"
      compressibility="0.0"/>

    <ConstantPermeability
      name="rockPerm"
      permeabilityComponents="{ 1.0e-15, 1.0e-15, 1.0e-15 }"/>
  </Constitutive>

  <FieldSpecifications>

   <FieldSpecification
      name="sourceTerm"
      objectPath="ElementRegions/Domain/0_hexahedra"
      fieldName="pressure"
      scale="5e6"
      setNames="{ all }"/>

   <FieldSpecification
      name="sinkTerm"
      objectPath="ElementRegions/Domain/2_hexahedra"
      fieldName="pressure"
      scale="-5e6"
      setNames="{ all }"/>
  </FieldSpecifications>

  <Outputs>
    <VTK
      name="vtkOutput"/>
  </Outputs>
</Problem>

# vtk DataFile Version 5.0
vtk domain
ASCII
DATASET STRUCTURED_POINTS

FIELD FieldData 1
CellLabels 2 3 string
0
injector
1
domain
2 
producer

DIMENSIONS 6 6 2
ORIGIN 0 0 0
SPACING 1 1 1

CELL_DATA 25
SCALARS attribute int 1
LOOKUP_TABLE default
0 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 2