/usr/include/palabos/atomicBlock/ is in libplb-dev 1.5~r1+repack1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/palabos/atomicBlock/atomicBlock2D.h
/usr/include/palabos/atomicBlock/atomicBlock3D.h
/usr/include/palabos/atomicBlock/atomicBlockOperations2D.h
/usr/include/palabos/atomicBlock/atomicBlockOperations3D.h
/usr/include/palabos/atomicBlock/atomicBlockSerializer2D.h
/usr/include/palabos/atomicBlock/atomicBlockSerializer3D.h
/usr/include/palabos/atomicBlock/atomicContainerBlock2D.h
/usr/include/palabos/atomicBlock/atomicContainerBlock3D.h
/usr/include/palabos/atomicBlock/blockLattice2D.h
/usr/include/palabos/atomicBlock/blockLattice2D.hh
/usr/include/palabos/atomicBlock/blockLattice3D.h
/usr/include/palabos/atomicBlock/blockLattice3D.hh
/usr/include/palabos/atomicBlock/dataField2D.h
/usr/include/palabos/atomicBlock/dataField2D.hh
/usr/include/palabos/atomicBlock/dataField3D.h
/usr/include/palabos/atomicBlock/dataField3D.hh
/usr/include/palabos/atomicBlock/dataProcessingFunctional2D.h
/usr/include/palabos/atomicBlock/dataProcessingFunctional2D.hh
/usr/include/palabos/atomicBlock/dataProcessingFunctional3D.h
/usr/include/palabos/atomicBlock/dataProcessingFunctional3D.hh
/usr/include/palabos/atomicBlock/dataProcessor2D.h
/usr/include/palabos/atomicBlock/dataProcessor3D.h
/usr/include/palabos/atomicBlock/dataProcessorWrapper2D.h
/usr/include/palabos/atomicBlock/dataProcessorWrapper2D.hh
/usr/include/palabos/atomicBlock/dataProcessorWrapper3D.h
/usr/include/palabos/atomicBlock/dataProcessorWrapper3D.hh
/usr/include/palabos/atomicBlock/headers2D.h
/usr/include/palabos/atomicBlock/headers2D.hh
/usr/include/palabos/atomicBlock/headers3D.h
/usr/include/palabos/atomicBlock/headers3D.hh
/usr/include/palabos/atomicBlock/reductiveDataProcessingFunctional2D.h
/usr/include/palabos/atomicBlock/reductiveDataProcessingFunctional2D.hh
/usr/include/palabos/atomicBlock/reductiveDataProcessingFunctional3D.h
/usr/include/palabos/atomicBlock/reductiveDataProcessingFunctional3D.hh
/usr/include/palabos/atomicBlock/reductiveDataProcessorWrapper2D.h
/usr/include/palabos/atomicBlock/reductiveDataProcessorWrapper2D.hh
/usr/include/palabos/atomicBlock/reductiveDataProcessorWrapper3D.h
/usr/include/palabos/atomicBlock/reductiveDataProcessorWrapper3D.hh