Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:58:56 2013 Optimize a model with 1400 rows, 200300 columns and 500400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.39s Presolved: 1300 rows, 200200 columns, 400300 nonzeros Variable types: 200200 continuous, 0 integer (0 binary) Root relaxation: objective 8.951303e+05, 9933 iterations, 1.07 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 0 2 895130.293 0 4 - 895130.293 - - 4s 3 5 899997.575 2 1 - 895454.809 - 280 5s 37 39 908558.937 19 2 - 896210.362 - 174 10s 101 103 941330.096 51 1 - 896210.362 - 104 15s 188 190 898687.288 94 1 - 896210.362 - 74.0 20s * 323 173 162 907246.20513 896210.362 1.22% 48.9 25s 482 294 900447.328 241 1 907246.205 896210.362 1.22% 33.6 30s * 630 46 315 900588.22407 896210.362 0.49% 26.2 34s 634 37 896582.089 3 1 900588.224 896210.362 0.49% 26.8 35s 783 46 cutoff 78 900588.224 896210.362 0.49% 24.8 40s * 941 8 10 896949.94038 896546.546 0.04% 22.6 44s * 952 4 12 896634.43616 896634.324 0.00% 22.7 44s Explored 953 nodes (31583 simplex iterations) in 44.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.966344361626e+05, best bound 8.966343243635e+05, gap 0.0000%