Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:26 2012

Optimize a model with 860 rows, 58 columns and 1720 nonzeros
Presolve removed 601 rows and 0 columns
Presolve time: 0.01s
Presolved: 259 rows, 58 columns, 1569 nonzeros
Variable types: 0 continuous, 58 integer (58 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.905083e+00, 104 iterations, 0.00 seconds

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

     0     0    9.90508    0   50    6.00000    9.90508  65.1%     -    0s
H    0     0                       7.0000000    9.90508  41.5%     -    0s
     0     0    9.66933    0   53    7.00000    9.66933  38.1%     -    0s
     0     0    9.60794    0   53    7.00000    9.60794  37.3%     -    0s
     0     0    9.58349    0   54    7.00000    9.58349  36.9%     -    0s
     0     0    9.57347    0   54    7.00000    9.57347  36.8%     -    0s
     0     0    9.56227    0   54    7.00000    9.56227  36.6%     -    0s
     0     0    9.53599    0   54    7.00000    9.53599  36.2%     -    0s
     0     0    9.52417    0   54    7.00000    9.52417  36.1%     -    0s
     0     0    9.51951    0   54    7.00000    9.51951  36.0%     -    0s
     0     0    9.51944    0   54    7.00000    9.51944  36.0%     -    0s
     0     0    9.51936    0   54    7.00000    9.51936  36.0%     -    0s
     0     2    9.51901    0   54    7.00000    9.51901  36.0%     -    0s

Cutting planes:
  Clique: 21
  Zero half: 7

Explored 23 nodes (1142 simplex iterations) in 0.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%