Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:53:13 2013 Optimize a model with 74906 rows, 74046 columns and 295926 nonzeros Presolve removed 7580 rows and 0 columns Presolve time: 0.49s Presolved: 67326 rows, 74046 columns, 280766 nonzeros Variable types: 73960 continuous, 86 integer (86 binary) Root relaxation: objective 1.031928e+05, 16317 iterations, 4.22 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 103192.831 0 4 - 103192.831 - - 4s H 0 0 105214.00000 103192.831 1.92% - 5s H 0 0 103258.00000 103192.831 0.06% - 5s 0 0 103194.696 0 4 103258.000 103194.696 0.06% - 6s 0 0 103194.696 0 3 103258.000 103194.696 0.06% - 7s 0 0 103215.562 0 4 103258.000 103215.562 0.04% - 8s 0 0 103242.213 0 2 103258.000 103242.213 0.02% - 8s 0 2 103244.486 0 2 103258.000 103244.486 0.01% - 9s Cutting planes: Gomory: 1 Explored 4 nodes (21271 simplex iterations) in 9.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.032580000000e+05, best bound 1.032580000000e+05, gap 0.0%