Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:19:04 2013 Optimize a model with 29808 rows, 29268 columns and 116748 nonzeros Presolve removed 54 rows and 0 columns Presolve time: 0.13s Presolved: 29754 rows, 29268 columns, 116694 nonzeros Variable types: 29214 continuous, 54 integer (54 binary) Root relaxation: objective 4.940011e+04, 4761 iterations, 2.53 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49400.1132 0 46 - 49400.1132 - - 2s H 0 0 71207.000000 49400.1132 30.6% - 4s 0 0 63253.0715 0 12 71207.0000 63253.0715 11.2% - 7s H 0 0 71169.123221 63253.0715 11.1% - 7s H 0 0 66507.000000 63253.0715 4.89% - 7s 0 0 65063.1520 0 3 66507.0000 65063.1520 2.17% - 7s H 0 0 65655.000000 65063.1520 0.90% - 7s 0 0 65063.4731 0 2 65655.0000 65063.4731 0.90% - 7s 0 2 65088.2979 0 2 65655.0000 65088.2979 0.86% - 8s * 12 3 11 65217.000000 65188.9000 0.04% 75.2 8s Cutting planes: Gomory: 2 Implied bound: 52 Explored 17 nodes (9583 simplex iterations) in 8.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.521700000000e+04, best bound 6.521116666667e+04, gap 0.0089%