Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:17 2013

Optimize a model with 27775 rows, 3025 columns and 84700 nonzeros
Presolve removed 6017 rows and 1622 columns
Presolve time: 0.19s
Presolved: 21758 rows, 1403 columns, 66259 nonzeros
Variable types: 19 continuous, 1384 integer (1384 binary)
Found heuristic solution: objective 54781.000000

Root relaxation: objective 4.769345e+04, 5070 iterations, 0.30 seconds

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

     0     0 47693.4498    0    9 54781.0000 47693.4498  12.9%     -    0s
H    0     0                    47707.000000 47693.4498  0.03%     -    0s
H    0     0                    47703.000000 47693.4498  0.02%     -    0s
     0     0 47694.3706    0   20 47703.0000 47694.3706  0.02%     -    0s
     0     0 47694.3706    0   10 47703.0000 47694.3706  0.02%     -    0s
H    0     0                    47702.000000 47694.3706  0.02%     -    0s
H    0     0                    47701.000000 47694.3706  0.01%     -    0s
     0     0 47694.4556    0   29 47701.0000 47694.4556  0.01%     -    0s
     0     1 47694.4561    0   29 47701.0000 47694.4561  0.01%     -    0s

Cutting planes:
  Gomory: 7
  Cover: 1
  MIR: 11
  Zero half: 6

Explored 5 nodes (6578 simplex iterations) in 0.99 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.770100000000e+04, best bound 4.769800000000e+04, gap 0.0063%