Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:14:56 2013

Optimize a model with 91963 rows, 6724 columns and 279046 nonzeros
Presolve removed 4301 rows and 3365 columns
Presolve time: 0.84s
Presolved: 87662 rows, 3359 columns, 266934 nonzeros
Variable types: 50 continuous, 3309 integer (3309 binary)
Found heuristic solution: objective 135954.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   37943    9.0008407e+04   0.000000e+00   9.759825e+05      5s
   40823    9.1435464e+04   0.000000e+00   0.000000e+00      6s
   40823    9.1435464e+04   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 9.143546e+04, 40823 iterations, 5.54 seconds

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

     0     0 91435.4636    0   15 135954.000 91435.4636  32.7%     -    6s
H    0     0                    91454.000000 91435.4636  0.02%     -    6s
H    0     0                    91447.000000 91435.4636  0.01%     -    7s
     0     0 91435.7705    0   49 91447.0000 91435.7705  0.01%     -    7s
     0     0 91435.7705    0   14 91447.0000 91435.7705  0.01%     -    7s
H    0     0                    91446.000000 91435.7705  0.01%     -    7s
     0     0 91435.7705    0   44 91446.0000 91435.7705  0.01%     -    8s
     0     2 91435.8137    0   44 91446.0000 91435.8137  0.01%     -    8s
H    8     6                    91442.000000 91436.0418  0.01%   0.0    8s

Cutting planes:
  Gomory: 2
  MIR: 22
  Zero half: 3

Explored 8 nodes (50647 simplex iterations) in 8.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.144200000000e+04, best bound 9.143700000000e+04, gap 0.0055%