Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:22:39 2013

Optimize a model with 9177 rows, 1444 columns and 28158 nonzeros
Presolve removed 1043 rows and 733 columns
Presolve time: 0.07s
Presolved: 8134 rows, 711 columns, 24997 nonzeros
Variable types: 17 continuous, 694 integer (694 binary)
Found heuristic solution: objective 26630.000000

Root relaxation: objective 1.996966e+04, 2348 iterations, 0.09 seconds

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

     0     0 19969.6556    0    9 26630.0000 19969.6556  25.0%     -    0s
H    0     0                    19985.000000 19969.6556  0.08%     -    0s
H    0     0                    19982.000000 19969.6556  0.06%     -    0s
H    0     0                    19979.000000 19969.6556  0.05%     -    0s
     0     0 19971.9818    0   19 19979.0000 19971.9818  0.04%     -    0s
     0     0 19971.9818    0    9 19979.0000 19971.9818  0.04%     -    0s
     0     0 19972.0162    0   20 19979.0000 19972.0162  0.03%     -    0s
     0     0 19972.8577    0   25 19979.0000 19972.8577  0.03%     -    0s
     0     2 19972.9567    0   25 19979.0000 19972.9567  0.03%     -    0s
H    5     5                    19977.000000 19973.2761  0.02%   0.0    0s

Cutting planes:
  Gomory: 4
  MIR: 15
  Zero half: 2

Explored 18 nodes (2753 simplex iterations) in 0.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.997700000000e+04, best bound 1.997700000000e+04, gap 0.0%