Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:01:26 2013 Optimize a model with 902 rows, 67322 columns and 134562 nonzeros Presolve time: 0.10s Presolved: 902 rows, 67322 columns, 134562 nonzeros Variable types: 67240 continuous, 82 integer (82 binary) Root relaxation: objective 9.121569e+04, 2496 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 91215.6898 0 7 - 91215.6898 - - 0s H 0 0 94034.000000 91215.6898 3.00% - 0s H 0 0 91991.000000 91215.6898 0.84% - 0s 0 0 91543.9565 0 5 91991.0000 91543.9565 0.49% - 0s 0 0 91543.9565 0 7 91991.0000 91543.9565 0.49% - 0s 0 0 91544.7227 0 5 91991.0000 91544.7227 0.49% - 1s 0 0 91601.3241 0 6 91991.0000 91601.3241 0.42% - 1s 0 0 91608.7197 0 5 91991.0000 91608.7197 0.42% - 1s 0 0 91608.7197 0 5 91991.0000 91608.7197 0.42% - 1s 0 0 91608.7197 0 5 91991.0000 91608.7197 0.42% - 1s 0 0 91608.7197 0 5 91991.0000 91608.7197 0.42% - 1s 0 2 91612.8325 0 5 91991.0000 91612.8325 0.41% - 1s * 9 4 8 91919.000000 91764.5140 0.17% 74.8 2s Cutting planes: Implied bound: 118 Flow cover: 7 Explored 13 nodes (6442 simplex iterations) in 2.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.191900000000e+04, best bound 9.191900000000e+04, gap 0.0%