Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:36:16 2013 Optimize a model with 63358 rows, 62568 columns and 249798 nonzeros Presolve removed 79 rows and 0 columns Presolve time: 0.29s Presolved: 63279 rows, 62568 columns, 249719 nonzeros Variable types: 62489 continuous, 79 integer (79 binary) Root relaxation: objective 6.595160e+04, 7353 iterations, 4.58 seconds Total elapsed time = 5.17s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 65951.6012 0 60 - 65951.6012 - - 5s H 0 0 103451.00000 65951.6012 36.2% - 7s 0 0 84091.5126 0 12 103451.000 84091.5126 18.7% - 16s H 0 0 100466.00000 84091.5126 16.3% - 17s 0 0 87083.4622 0 11 100466.000 87083.4622 13.3% - 19s H 0 0 90608.000000 87083.4622 3.89% - 19s 0 0 87445.8738 0 3 90608.0000 87445.8738 3.49% - 20s H 0 0 89139.000000 87445.8738 1.90% - 21s H 0 0 87656.000000 87445.8738 0.24% - 21s 0 0 87463.6052 0 2 87656.0000 87463.6052 0.22% - 21s 0 0 87588.8045 0 2 87656.0000 87588.8045 0.08% - 22s 0 0 87655.1250 0 1 87656.0000 87655.1250 0.00% - 22s Cutting planes: Implied bound: 74 Explored 0 nodes (17750 simplex iterations) in 22.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.765600000000e+04, best bound 8.765512500000e+04, gap 0.0010%