                         }
                     }
                 } // end if (processing neighbor)
-            
+
             // threads that need to do more looking set the still_searching flag
             __syncthreads();
             if (master && group == 0)

    unsigned int group = threadIdx.z;
    unsigned int offset = threadIdx.y;
    unsigned int group_size = blockDim.y;
    bool master = (offset == 0);
    unsigned int n_groups = blockDim.z;

    unsigned int err_count = 0;

                select*depletant_idx.getNumElements() + depletant_idx(depletant_type_a,depletant_type_b),
                timestep);

            overlap_checks += 2;

            // test depletant position and orientation
