Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:22:57 2013 Optimize a model with 1800 rows, 100600 columns and 201700 nonzeros Presolve removed 400 rows and 300 columns Presolve time: 0.52s Presolved: 1400 rows, 100300 columns, 200900 nonzeros Variable types: 100200 continuous, 100 integer (100 binary) Root relaxation: objective 9.053666e+05, 4637 iterations, 0.74 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 905366.638 0 2 - 905366.638 - - 1s H 0 0 925632.03755 905366.638 2.19% - 1s H 0 0 920500.71831 905366.638 1.64% - 1s 0 2 905424.232 0 2 920500.718 905424.232 1.64% - 3s H 1 1 909727.78973 905424.232 0.47% 0.0 3s H 2 2 909438.75873 905802.203 0.40% 128 3s H 4 4 908786.96175 906272.749 0.28% 127 4s H 6 6 908217.12581 906272.749 0.21% 125 4s H 7 6 908201.40149 906272.749 0.21% 113 4s * 8 5 8 907923.98716 906272.749 0.18% 106 4s 11 3 906520.968 1 1 907923.987 906520.968 0.15% 126 5s Explored 32 nodes (8763 simplex iterations) in 8.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.079239871585e+05, best bound 9.079239871585e+05, gap 0.0%