Gurobi 5.0.1 (linux64) logging started Sun Dec  9 06:12:28 2012

Optimize a model with 570 rows, 540 columns and 1788 nonzeros
Presolve removed 21 rows and 12 columns
Presolve time: 0.01s
Presolved: 549 rows, 528 columns, 1740 nonzeros
Variable types: 351 continuous, 177 integer (177 binary)

Root relaxation: objective 4.937755e+04, 293 iterations, 0.00 seconds

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

     0     0 49377.5503    0  101          - 49377.5503     -      -    0s
H    0     0                    76404.000000 49377.5503  35.4%     -    0s
     0     0 58096.2543    0   23 76404.0000 58096.2543  24.0%     -    0s
     0     0 58442.4168    0   29 76404.0000 58442.4168  23.5%     -    0s
     0     0 58561.4800    0   33 76404.0000 58561.4800  23.4%     -    0s
     0     0 58642.7910    0   23 76404.0000 58642.7910  23.2%     -    0s
     0     0 58655.8474    0   23 76404.0000 58655.8474  23.2%     -    0s
H    0     0                    72610.000000 58655.8474  19.2%     -    0s
     0     2 58657.4689    0   23 72610.0000 58657.4689  19.2%     -    0s
H   27    27                    61732.000000 58671.8313  4.96%   5.0    0s
H   60    57                    59678.000000 58671.8313  1.69%   4.0    0s
*   61    55              58    59626.000000 58671.8313  1.60%   3.9    0s
H  698   352                    59621.000000 59041.9222  0.97%   6.5    0s
H 1244   312                    59538.000000 59266.9352  0.46%   6.0    0s
* 1601   238              69    59523.000000 59333.8792  0.32%   5.6    0s

Cutting planes:
  Gomory: 21
  Flow cover: 70
  Flow path: 35

Explored 2295 nodes (12436 simplex iterations) in 1.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.952300000000e+04, best bound 5.951799818345e+04, gap 0.0084%