Problem:    
Rows:       13
Columns:    21 (18 integer, 0 binary)
Non-zeros:  33
Status:     INTEGER OPTIMAL
Objective:  obj = -3035 (MINimum)

   No.   Row name        Activity     Lower bound   Upper bound
------ ------------    ------------- ------------- -------------
     1 r.4                       500                         500 
     2 r.5                       200           200               
     3 r.6                       240           240               
     4 r.7                         0                           0 
     5 r.8                      6000                        6000 
     6 r.9                       250           200               
     7 r.10                      250           240               
     8 r.11                        0                           0 
     9 r.12                     5000                        6000 
    10 r.13                      200           200               
    11 r.14                      260           240               
    12 r.15                        0                           0 
    13 r.16                     4000                        6000 

   No. Column name       Activity     Lower bound   Upper bound
------ ------------    ------------- ------------- -------------
     1 x1                        100             0               
     2 x2                        150             0               
     3 x3                        250             0               
     4 w11          *              1             0               
     5 y11          *              0             0               
     6 w21          *              3             0               
     7 y21          *              0             0               
     8 w31          *             60             0               
     9 w41          *              0             0               
    10 w12          *              0             0               
    11 y12          *              0             0               
    12 w22          *              2             0               
    13 y22          *              0             0               
    14 w32          *             50             0               
    15 w42          *              0             0               
    16 w13          *              0             0               
    17 y13          *              0             0               
    18 w23          *              1             0               
    19 y23          *              0             0               
    20 w33          *             40             0               
    21 w43          *              0             0               

Integer feasibility conditions:

KKT.PE: max.abs.err = 0.00e+000 on row 0
        max.rel.err = 0.00e+000 on row 0
        High quality

KKT.PB: max.abs.err = 0.00e+000 on row 0
        max.rel.err = 0.00e+000 on row 0
        High quality

End of output