Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:37:12 2013 Optimize a model with 64880 rows, 64080 columns and 256080 nonzeros Presolve removed 3571 rows and 0 columns Presolve time: 0.41s Presolved: 61309 rows, 64080 columns, 248938 nonzeros Variable types: 64000 continuous, 80 integer (80 binary) Root relaxation: objective 9.590819e+04, 13885 iterations, 3.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 95908.1909 0 4 - 95908.1909 - - 3s H 0 0 97817.000000 95908.1909 1.95% - 3s 0 0 95908.5193 0 6 97817.0000 95908.5193 1.95% - 4s H 0 0 97663.275862 95908.5193 1.80% - 6s H 0 0 96424.000000 95908.5193 0.53% - 6s 0 0 95908.5193 0 4 96424.0000 95908.5193 0.53% - 9s 0 0 95908.5301 0 6 96424.0000 95908.5301 0.53% - 10s 0 0 95908.5301 0 6 96424.0000 95908.5301 0.53% - 10s 0 2 95909.0895 0 6 96424.0000 95909.0895 0.53% - 12s H 3 3 96284.243902 95952.2252 0.34% 82.0 12s H 6 5 96104.291667 96020.5779 0.09% 121 13s * 7 3 6 96092.000000 96020.5779 0.07% 120 13s Cutting planes: Gomory: 2 Flow cover: 8 Explored 12 nodes (22611 simplex iterations) in 13.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.609200000000e+04, best bound 9.609200000000e+04, gap 0.0%