Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:52:30 2013

Optimize a model with 11521 rows, 1681 columns and 35301 nonzeros
Presolve removed 1183 rows and 848 columns
Presolve time: 0.08s
Presolved: 10338 rows, 833 columns, 31849 nonzeros
Variable types: 22 continuous, 811 integer (811 binary)
Found heuristic solution: objective 26265.000000

Root relaxation: objective 1.940562e+04, 4743 iterations, 0.19 seconds

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

     0     0 19405.6154    0   10 26265.0000 19405.6154  26.1%     -    0s
H    0     0                    19421.000000 19405.6154  0.08%     -    0s
H    0     0                    19420.000000 19405.6154  0.07%     -    0s
     0     0 19406.3333    0   15 19420.0000 19406.3333  0.07%     -    0s
     0     0 19406.3333    0    9 19420.0000 19406.3333  0.07%     -    0s
H    0     0                    19419.000000 19406.3333  0.07%     -    0s
H    0     0                    19418.000000 19406.3333  0.06%     -    0s
     0     0 19406.3333    0   22 19418.0000 19406.3333  0.06%     -    0s
     0     2 19406.3333    0   19 19418.0000 19406.3333  0.06%     -    0s
H    1     2                    19414.000000 19406.3333  0.04%  42.0    0s
H   10     7                    19413.000000 19407.7817  0.03%   4.2    0s
H  230    72                    19412.000000 19409.3614  0.01%  14.9    0s

Cutting planes:
  Gomory: 5
  Cover: 2
  Implied bound: 2
  MIR: 55
  Zero half: 17

Explored 515 nodes (13004 simplex iterations) in 0.94 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.941200000000e+04, best bound 1.941100000000e+04, gap 0.0052%