Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:02:07 2013

Optimize a model with 19844 rows, 19404 columns and 77484 nonzeros
Presolve removed 740 rows and 0 columns
Presolve time: 0.10s
Presolved: 19104 rows, 19404 columns, 76004 nonzeros
Variable types: 19360 continuous, 44 integer (44 binary)

Root relaxation: objective 5.496823e+04, 4118 iterations, 0.33 seconds

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

     0     0 54968.2333    0    2          - 54968.2333     -      -    0s
H    0     0                    55003.000000 54968.2333  0.06%     -    0s
H    0     0                    54995.000000 54968.2333  0.05%     -    0s
     0     0 54968.6373    0    3 54995.0000 54968.6373  0.05%     -    0s
     0     0 54968.6373    0    3 54995.0000 54968.6373  0.05%     -    0s
     0     0 54969.4376    0    2 54995.0000 54969.4376  0.05%     -    0s
     0     0 54969.5178    0    2 54995.0000 54969.5178  0.05%     -    0s
     0     0 54971.1335    0    2 54995.0000 54971.1335  0.04%     -    1s
     0     0 54971.8409    0    2 54995.0000 54971.8409  0.04%     -    1s
     0     0 54974.0000    0    1 54995.0000 54974.0000  0.04%     -    1s
     0     0 54974.0000    0    1 54995.0000 54974.0000  0.04%     -    1s
     0     0 54974.0000    0    1 54995.0000 54974.0000  0.04%     -    1s
     0     0 54974.0000    0    1 54995.0000 54974.0000  0.04%     -    1s

Cutting planes:
  Gomory: 1

Explored 0 nodes (5099 simplex iterations) in 1.53 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.499500000000e+04, best bound 5.499500000000e+04, gap 0.0%