Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:15:22 2012

Optimize a model with 243 rows, 172 columns and 777 nonzeros
Presolve time: 0.00s
Presolved: 243 rows, 172 columns, 777 nonzeros
Variable types: 0 continuous, 172 integer (172 binary)
Found heuristic solution: objective 56.0000000

Root relaxation: objective 0.000000e+00, 79 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    0.00000    0   51   56.00000    0.00000   100%     -    0s
H    0     0                      43.0000000    0.00000   100%     -    0s
H    0     0                      40.0000000    0.00000   100%     -    0s
     0     0    0.53105    0   52   40.00000    0.53105  98.7%     -    0s
     0     0    1.20910    0   55   40.00000    1.20910  97.0%     -    0s
     0     0    1.21314    0   56   40.00000    1.21314  97.0%     -    0s
     0     2    1.23294    0   56   40.00000    1.23294  96.9%     -    0s
*   27    27              18      32.0000000    3.53977  88.9%  30.8    0s
*  112    67              17      29.0000000    7.60458  73.8%  25.3    0s
*  550   161              17      28.0000000   15.57143  44.4%  21.9    0s
* 1068   159              27      27.0000000   17.48889  35.2%  21.3    0s
* 1288    68              25      26.0000000   19.55556  24.8%  21.1    0s

Explored 1509 nodes (31125 simplex iterations) in 0.90 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%