Carpet Plotter Warnings in 2D

In 2D, I get the following warnings all the time. Can you take a look at it:
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./ExaHyPE/exahype/plotters/Carpet/FiniteVolume2Carpet.cpp:202:8: warning: unused variable ‘isNotInAnyGhostLayer’ [-Wunused-variable]
>    bool isNotInAnyGhostLayer = tarch::la::allSmaller(icell,numberOfCellsPerAxis+ghostLayerWidth) &&  tarch::la::allGreater(icell,ghostLayerWidth-1);
>         ^~~~~~~~~~~~~~~~~~~~
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./ExaHyPE/exahype/plotters/Carpet/FiniteVolume2Carpet.cpp:205:8: warning: unused variable ‘isNotInCornerGhostLayer’ [-Wunused-variable]
>    bool isNotInCornerGhostLayer = !(tarch::la::allSmaller(icell, ghostLayerWidth) || tarch::la::allGreater(icell, numberOfCellsPerAxis+ghostLayerWidth));
>         ^~~~~~~~~~~~~~~~~~~~~~~
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./ExaHyPE/exahype/plotters/Carpet/FiniteVolume2Carpet.cpp:207:8: warning: unused variable ‘justIgnoreTheCornerProblem’ [-Wunused-variable]
>    bool justIgnoreTheCornerProblem = true;
>         ^~~~~~~~~~~~~~~~~~~~~~~~~~
> In file included from /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./Peano/peano/../tarch/la/Vector.h:177:0,
>                  from /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./ExaHyPE/exahype/parser/Parser.h:33,
>                  from /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./ExaHyPE/exahype/plotters/Plotter.h:21,
>                  from /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./ExaHyPE/exahype/plotters/Carpet/FiniteVolume2Carpet.h:19,
>                  from /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./ExaHyPE/exahype/plotters/Carpet/FiniteVolume2Carpet.cpp:16:
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./Peano/peano/../tarch/la/Vector.cpph: In member function ‘void exahype::plotters::FiniteVolume2Carpet::interpolateCartesianSlicedVertexPatch(const tarch::la::Vector<2, double>&, const tarch::la::Vector<2, double>&, double*, double*, double, const exahype::plotters::CartesianSlicer&)’:
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./Peano/peano/../tarch/la/Vector.cpph:31:10: warning: array subscript is above array bounds [-Warray-bounds]
>    _values[2] = value2;
>    ~~~~~~~^
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./Peano/peano/../tarch/la/Vector.cpph:31:10: warning: array subscript is above array bounds [-Warray-bounds]
>    _values[2] = value2;
>    ~~~~~~~^
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./Peano/peano/../tarch/la/Vector.cpph:31:10: warning: array subscript is above array bounds [-Warray-bounds]
>    _values[2] = value2;
>    ~~~~~~~^
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./Peano/peano/../tarch/la/Vector.cpph:31:10: warning: array subscript is above array bounds [-Warray-bounds]
>    _values[2] = value2;
>    ~~~~~~~^
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./Peano/peano/../tarch/la/Vector.cpph:31:10: warning: array subscript is above array bounds [-Warray-bounds]
>    _values[2] = value2;
>    ~~~~~~~^
> /home/dominic/dev/codes/c/upstream/ExaHyPE-Engine/./Peano/peano/../tarch/la/Vector.cpph:31:10: warning: array subscript is above array bounds [-Warray-bounds]
>    _values[2] = value2;
>    ~~~~~~~^
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Carpet Plotter Warnings in 2D
