Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:41 2013

Optimize a model with 64 rows, 1064 columns and 11142 nonzeros
Presolve removed 22 rows and 23 columns
Presolve time: 0.04s
Presolved: 42 rows, 1041 columns, 10098 nonzeros
Variable types: 1023 continuous, 18 integer (18 binary)

Root relaxation: objective 7.444602e+03, 12 iterations, 0.00 seconds

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

     0     0 7444.60178    0    3          - 7444.60178     -      -    0s
     0     0 7445.84795    0    3          - 7445.84795     -      -    0s
     0     0 7456.83115    0    3          - 7456.83115     -      -    0s
     0     0 7458.29253    0    3          - 7458.29253     -      -    0s
     0     0 7458.85488    0    3          - 7458.85488     -      -    0s
     0     0 7459.10706    0    3          - 7459.10706     -      -    0s
     0     0 7459.10706    0    3          - 7459.10706     -      -    0s
     0     0 7459.10706    0    3          - 7459.10706     -      -    0s
     0     0 7459.11145    0    5          - 7459.11145     -      -    0s
     0     0 7459.11253    0    4          - 7459.11253     -      -    0s
     0     0 7459.11502    0    5          - 7459.11502     -      -    0s
     0     0 7459.11763    0    5          - 7459.11763     -      -    0s
     0     0 7459.11763    0    5          - 7459.11763     -      -    0s
H    0     0                    7539.1302881 7459.11763  1.06%     -    0s
     0     2 7459.11812    0    5 7539.13029 7459.11812  1.06%     -    0s
*    3     3               3    7459.1541736 7459.15417   0.0%   3.7    0s

Cutting planes:
  Cover: 1
  Implied bound: 1
  Flow cover: 3

Explored 4 nodes (94 simplex iterations) in 0.36 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.459154173588e+03, best bound 7.459154173588e+03, gap 0.0%