Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:52:27 2013 Optimize a model with 57075 rows, 56325 columns and 225075 nonzeros Presolve removed 1134 rows and 0 columns Presolve time: 0.36s Presolved: 55941 rows, 56325 columns, 222807 nonzeros Variable types: 56250 continuous, 75 integer (75 binary) Root relaxation: objective 9.169565e+04, 12516 iterations, 2.65 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 91695.6512 0 2 - 91695.6512 - - 3s H 0 0 92218.000000 91695.6512 0.57% - 3s 0 0 91696.4077 0 4 92218.0000 91696.4077 0.57% - 3s 0 0 91696.6854 0 4 92218.0000 91696.6854 0.57% - 4s 0 2 91698.9905 0 4 92218.0000 91698.9905 0.56% - 6s H 16 6 92046.000000 91862.7593 0.20% 117 7s * 17 6 16 92032.000000 91862.7593 0.18% 111 7s Cutting planes: Gomory: 1 Flow cover: 2 Explored 42 nodes (15933 simplex iterations) in 8.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.203200000000e+04, best bound 9.203200000000e+04, gap 0.0%