Optimization : linprog function problem !!!

Hello!!! I'm writing a program to optimize an object function :

clc

f = [750 600 1400 1000 0 0 0 0 0 0]; % Object function

Aeq = [0 0 0 0 -1 0 0 -5 5 0; 0 0 0 0 0 -1 0 0 -10 10; 0 0 0 0 0 0 -1 -5 0 5 ; -1 -1 0 0 0 0 0 -10 5 5; 0 0 -1 0 0 0 0 5 -15 10; 0 0 0 -1 0 0 0 5 10 -15];

beq = [0;0;0;0.5;0.6;3];

LB = [0 0 0 0 -1.26 -1.30 -2.50 -pi -pi -pi];

UB = [1.40 2.85 .90 .85 1.26 1.30 2.50 pi pi pi];

[X,FVAL,EXITFLAG,OUTPUT,LAMBDA]=linprog(f,[],[],Aeq,beq,LB,UB)

THE RESULT I RECEIVE IS : 
Exiting: One or more of the residuals, duality gap, or total relative error
has stalled:
       the primal appears to be infeasible (and the dual unbounded).
       (The dual residual < TolFun=1.00e-008.)

X =

    0.1856
    0.0017
    0.0717
    0.0000
    0.5254
   -0.6682
    0.0678
    1.1334
    1.0669
    0.9517

FVAL =

240.5804

EXITFLAG =

    -2

OUTPUT =

      iterations: 7
       algorithm: 'large-scale: interior point'
    cgiterations: 0
         message: [1x209 char]

LAMBDA =

    ineqlin: [0x1 double]
      eqlin: [6x1 double]
      upper: [10x1 double]
      lower: [10x1 double]
It's not my hope, What is the error ??? and please tell me the solution for it.
Thank you very much

Answer 1

[Torsten]

Seems your constraints are such that your problem does not have a feasible point.

Best wishes

Torsten.