Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:36 2013

Optimize a model with 29316 rows, 3136 columns and 89376 nonzeros
Presolve removed 2319 rows and 1584 columns
Presolve time: 0.18s
Presolved: 26997 rows, 1552 columns, 82369 nonzeros
Variable types: 26 continuous, 1526 integer (1526 binary)
Found heuristic solution: objective 65712.000000

Root relaxation: objective 4.952632e+04, 11438 iterations, 0.75 seconds

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

     0     0 49526.3206    0   12 65712.0000 49526.3206  24.6%     -    1s
H    0     0                    49539.000000 49526.3206  0.03%     -    1s
H    0     0                    49538.000000 49526.3206  0.02%     -    1s
     0     0 49527.1334    0   28 49538.0000 49527.1334  0.02%     -    1s
     0     0 49527.1334    0   10 49538.0000 49527.1334  0.02%     -    1s
H    0     0                    49536.000000 49527.1334  0.02%     -    1s
     0     0 49527.3990    0   35 49536.0000 49527.3990  0.02%     -    1s
     0     2 49527.8607    0   33 49536.0000 49527.8607  0.02%     -    1s
H    1     2                    49534.000000 49527.8607  0.01%  19.0    1s
H  238    84                    49531.000000 49528.4047  0.01%  17.1    1s

Cutting planes:
  Gomory: 8
  Cover: 4
  Clique: 2
  MIR: 28
  Zero half: 7
  Mod-K: 1

Explored 238 nodes (17646 simplex iterations) in 2.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.953100000000e+04, best bound 4.952900000000e+04, gap 0.0040%