Gurobi 5.0.1 (linux64) logging started Mon Feb 4 20:00:10 2013 Optimize a model with 366275 rows, 16900 columns and 1106950 nonzeros Presolve removed 16864 rows and 8519 columns Presolve time: 5.08s Presolved: 349411 rows, 8381 columns, 1056231 nonzeros Variable types: 63 continuous, 8318 integer (8318 binary) Found heuristic solution: objective 348642.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 11564 2.0578161e+05 0.000000e+00 1.403600e+09 5s 24780 2.0790658e+05 0.000000e+00 1.103015e+09 10s 39648 2.1471733e+05 0.000000e+00 5.201064e+08 15s 58655 2.1910479e+05 0.000000e+00 1.017739e+09 20s 74354 2.2335192e+05 0.000000e+00 6.546208e+07 25s 92540 2.2929433e+05 0.000000e+00 4.031408e+08 30s 107428 2.3534991e+05 0.000000e+00 1.017373e+08 35s 122300 2.4188119e+05 0.000000e+00 4.164522e+07 40s 132462 2.4700374e+05 0.000000e+00 0.000000e+00 44s 132462 2.4700374e+05 0.000000e+00 0.000000e+00 44s Root relaxation: objective 2.470037e+05, 132462 iterations, 44.15 seconds Total elapsed time = 50.42s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 247003.736 0 20 348642.000 247003.736 29.2% - 51s H 0 0 247015.00000 247003.736 0.00% - 51s Explored 0 nodes (132662 simplex iterations) in 51.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.470150000000e+05, best bound 2.470040000000e+05, gap 0.0045%