Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:52:13 2012

Optimize a model with 674 rows, 116 columns and 1348 nonzeros
Presolve removed 256 rows and 0 columns
Presolve time: 0.00s
Presolved: 418 rows, 116 columns, 1045 nonzeros
Variable types: 0 continuous, 116 integer (116 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.954167e+01, 264 iterations, 0.00 seconds

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

     0     0   39.54167    0  112   29.00000   39.54167  36.4%     -    0s
H    0     0                      31.0000000   39.54167  27.6%     -    0s
     0     0   38.98533    0  110   31.00000   38.98533  25.8%     -    0s
     0     0   38.84798    0  111   31.00000   38.84798  25.3%     -    0s
     0     0   38.57171    0  112   31.00000   38.57171  24.4%     -    0s
     0     0   38.30278    0  112   31.00000   38.30278  23.6%     -    0s
     0     0   38.19984    0  114   31.00000   38.19984  23.2%     -    0s
     0     0   38.13874    0  112   31.00000   38.13874  23.0%     -    0s
     0     0   38.11761    0  112   31.00000   38.11761  23.0%     -    0s
     0     0   38.11389    0  113   31.00000   38.11389  22.9%     -    0s
     0     0   38.11389    0  113   31.00000   38.11389  22.9%     -    0s
H    0     0                      32.0000000   38.11389  19.1%     -    0s
     0     2   38.11316    0  113   32.00000   38.11316  19.1%     -    0s

Explored 2255 nodes (53554 simplex iterations) in 1.97 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%