Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:18:21 2012

Optimize a model with 607 rows, 539 columns and 2054 nonzeros
Presolve removed 0 rows and 10 columns
Presolve time: 0.00s
Presolved: 607 rows, 529 columns, 2044 nonzeros
Variable types: 0 continuous, 529 integer (528 binary)
Found heuristic solution: objective 119.0000000

Root relaxation: objective 0.000000e+00, 268 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  222  119.00000    0.00000   100%     -    0s
H    0     0                      82.0000000    0.00000   100%     -    0s
     0     0    0.47302    0  223   82.00000    0.47302  99.4%     -    0s
H    0     0                      66.0000000    0.47302  99.3%     -    0s
     0     0    1.00000    0  227   66.00000    1.00000  98.5%     -    0s
H    0     0                      60.0000000    1.00000  98.3%     -    0s
     0     0    1.00000    0  224   60.00000    1.00000  98.3%     -    0s
H    0     0                      58.0000000    1.00000  98.3%     -    0s
     0     0    1.00000    0  222   58.00000    1.00000  98.3%     -    0s
H    0     0                      53.0000000    1.00000  98.1%     -    0s
     0     2    1.00000    0  222   53.00000    1.00000  98.1%     -    0s
H   27    27                      51.0000000    3.88658  92.4%  60.0    0s
*   47    31              27      23.0000000    3.88658  83.1%  45.4    0s

Cutting planes:
  Gomory: 2
  Mod-K: 1

Explored 1256 nodes (36502 simplex iterations) in 1.93 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%