Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:15:30 2012

Optimize a model with 225 rows, 163 columns and 723 nonzeros
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 225 rows, 162 columns, 722 nonzeros
Variable types: 0 continuous, 162 integer (161 binary)
Found heuristic solution: objective 53.0000000

Root relaxation: objective 0.000000e+00, 74 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   49   53.00000    0.00000   100%     -    0s
H    0     0                      48.0000000    0.00000   100%     -    0s
     0     0    0.48980    0   50   48.00000    0.48980  99.0%     -    0s
H    0     0                      47.0000000    0.48980  99.0%     -    0s
     0     0    1.00000    0   51   47.00000    1.00000  97.9%     -    0s
     0     0    1.07531    0   52   47.00000    1.07531  97.7%     -    0s
H    0     0                      32.0000000    1.07531  96.6%     -    0s
H    0     0                      30.0000000    1.07531  96.4%     -    0s
     0     0    1.10226    0   54   30.00000    1.10226  96.3%     -    0s
     0     0    1.13563    0   54   30.00000    1.13563  96.2%     -    0s
H    0     0                      28.0000000    1.13563  95.9%     -    0s
     0     2    1.16666    0   54   28.00000    1.16666  95.8%     -    0s
*   31    24              18      23.0000000    3.14126  86.3%  25.4    0s
*  138    75              11      22.0000000    7.37900  66.5%  27.9    0s
*  397   108              11      21.0000000   10.27864  51.1%  24.2    0s

Cutting planes:
  Gomory: 5
  Mod-K: 1

Explored 822 nodes (18026 simplex iterations) in 0.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%