Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:51 2013

Optimize a model with 420 rows, 4260 columns and 8800 nonzeros
Presolve removed 40 rows and 40 columns
Presolve time: 0.01s
Presolved: 380 rows, 4220 columns, 8660 nonzeros
Variable types: 4140 continuous, 80 integer (80 binary)

Root relaxation: objective 4.636776e+04, 437 iterations, 0.01 seconds

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

     0     0 46367.7551    0    2          - 46367.7551     -      -    0s
     0     0 46405.8203    0    2          - 46405.8203     -      -    0s
     0     0 46412.6120    0    2          - 46412.6120     -      -    0s
     0     0 46415.6273    0    2          - 46415.6273     -      -    0s
     0     0 46416.4611    0    2          - 46416.4611     -      -    0s
     0     0 46417.2187    0    2          - 46417.2187     -      -    0s
     0     0 46417.2187    0    2          - 46417.2187     -      -    0s
H    0     0                    46661.556328 46417.2187  0.52%     -    0s
     0     2 46527.0889    0    1 46661.5563 46527.0889  0.29%     -    0s
*    3     0               2    46650.426787 46650.4268   0.0%  35.0    0s

Cutting planes:
  Flow cover: 6

Explored 4 nodes (632 simplex iterations) in 0.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.665042678719e+04, best bound 4.665042678719e+04, gap 0.0%