Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:23:00 2013 Optimize a model with 3400 rows, 102200 columns and 208100 nonzeros Presolve removed 400 rows and 300 columns Presolve time: 0.43s Presolved: 3000 rows, 101900 columns, 206500 nonzeros Variable types: 101000 continuous, 900 integer (900 binary) Root relaxation: objective 8.951303e+05, 9068 iterations, 0.86 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 895130.293 0 4 - 895130.293 - - 1s H 0 0 1022485.5503 895130.293 12.5% - 1s H 0 0 900789.75719 895130.293 0.63% - 2s 0 2 895183.470 0 4 900789.757 895183.470 0.62% - 3s 13 14 895778.849 13 1 900789.757 895778.849 0.56% 53.7 5s H 27 11 898344.07806 896132.324 0.25% 38.0 7s H 28 11 898026.86403 896132.324 0.21% 37.6 7s * 56 9 6 896949.94038 896476.541 0.05% 61.8 9s 60 5 896549.236 10 3 896949.940 896549.236 0.04% 64.5 10s * 65 3 14 896634.43616 896613.796 0.00% 63.5 10s Explored 66 nodes (13196 simplex iterations) in 10.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.966344361626e+05, best bound 8.966137959975e+05, gap 0.0023%