Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:51:57 2013 Optimize a model with 1300 rows, 31800 columns and 95650 nonzeros Presolve removed 50 rows and 1450 columns Presolve time: 0.12s Presolved: 1250 rows, 30350 columns, 90650 nonzeros Variable types: 30050 continuous, 300 integer (300 binary) Root relaxation: objective 2.246016e+05, 2035 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 224601.597 0 3 - 224601.597 - - 0s H 0 0 225670.68569 224601.597 0.47% - 0s 0 0 224601.597 0 3 225670.686 224601.597 0.47% - 0s 0 0 224601.597 0 3 225670.686 224601.597 0.47% - 0s 0 0 224601.597 0 3 225670.686 224601.597 0.47% - 0s 0 0 224601.597 0 3 225670.686 224601.597 0.47% - 0s 0 0 224601.597 0 3 225670.686 224601.597 0.47% - 1s 0 0 224601.597 0 3 225670.686 224601.597 0.47% - 1s H 0 0 225286.67636 224601.597 0.30% - 1s 0 2 224601.597 0 3 225286.676 224601.597 0.30% - 1s * 5 0 4 224847.24808 224847.248 0.0% 81.4 1s Cutting planes: Flow cover: 3 Explored 6 nodes (3811 simplex iterations) in 1.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.248472480793e+05, best bound 2.248472480793e+05, gap 0.0%