I don't understand how you came up with the calculation for ravailk, but the sum of all the sizes is leading to a number greater than the total number of columns (position 2) in x.
The result of this calculation is 100000816 while the total number of columns in x is indicated in the top of the error message (1865 here, but it appears to change every run).
floor(Numtk+size(ttransij,2)+ size(texeij,2)+ size(D_Cloud,2)+size(F_Cloud,2)+...
size(MuRSU,2)+size(MaxNumtk,2)+size(E,2)+size(DPrc,2)+size(pc,2)+size(Muc,2)+...
size(Mui,2)+size(Muk,2)+size(B,2)+size(pi)+size(pm,2)+size(W,2)+size(Wfog,2)+...
size(t,2)+size(T,2)+size(cdk,2)+size(j,2)+size(i,2)+size(TasksperVehicle,2)+...
size(NTotal,2)+size(Numv,2)+size(Numtk,2)+size(TijPrime,2)+size(loop1,2)+...
size(Fprime,2)+size(PhikPrime,2)+size(D,2)+size(F,2)+Numv)
It is also interesting that the result is a 1x2 vector. It is probably supposed to be a scalar. You can fix that by replacing size(pi) with size(pi,2).
