Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:39:25 2013 Optimize a model with 1400 rows, 102300 columns and 206400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.26s Presolved: 1300 rows, 102200 columns, 204300 nonzeros Variable types: 102200 continuous, 0 integer (0 binary) Root relaxation: objective 9.053666e+05, 7739 iterations, 1.07 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 927917.55197 905366.638 2.43% - 3s 0 2 905366.638 0 2 927917.552 905366.638 2.43% - 7s 4 6 905802.203 2 1 927917.552 905802.203 2.38% 404 10s 19 21 922939.541 10 2 927917.552 906347.749 2.32% 267 15s * 53 13 27 908013.94925 906347.749 0.18% 130 19s 58 12 907652.586 4 1 908013.949 906347.749 0.18% 128 20s 84 16 907950.228 6 1 908013.949 907557.024 0.05% 118 25s Explored 136 nodes (18999 simplex iterations) in 28.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.080139492532e+05, best bound 9.079362137297e+05, gap 0.0086%