Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:07:12 2013

Optimize a model with 23568 rows, 23088 columns and 92208 nonzeros
Presolve removed 571 rows and 0 columns
Presolve time: 0.14s
Presolved: 22997 rows, 23088 columns, 91066 nonzeros
Variable types: 23040 continuous, 48 integer (48 binary)

Root relaxation: objective 5.754075e+04, 4642 iterations, 0.45 seconds

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

     0     0 57540.7475    0    2          - 57540.7475     -      -    0s
H    0     0                    57722.000000 57540.7475  0.31%     -    0s
     0     0 57544.1253    0    4 57722.0000 57544.1253  0.31%     -    0s
     0     0 57544.3751    0    4 57722.0000 57544.3751  0.31%     -    0s
     0     0 57544.9717    0    4 57722.0000 57544.9717  0.31%     -    1s
     0     0 57544.9735    0    3 57722.0000 57544.9735  0.31%     -    1s
H    0     0                    57632.000000 57544.9735  0.15%     -    1s
     0     0     cutoff    0      57632.0000 57632.0000   0.0%     -    1s

Explored 0 nodes (6224 simplex iterations) in 1.98 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.763200000000e+04, best bound 5.763200000000e+04, gap 0.0%