Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:29 2013 Optimize a model with 1080 rows, 4840 columns and 11220 nonzeros Presolve removed 60 rows and 40 columns Presolve time: 0.03s Presolved: 1020 rows, 4800 columns, 10360 nonzeros Variable types: 4420 continuous, 380 integer (380 binary) Root relaxation: objective 3.573401e+04, 660 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35734.0139 0 3 - 35734.0139 - - 0s 0 0 35840.6978 0 6 - 35840.6978 - - 0s 0 0 35864.1540 0 5 - 35864.1540 - - 0s 0 0 35867.6797 0 6 - 35867.6797 - - 0s 0 0 35875.0303 0 5 - 35875.0303 - - 0s 0 0 35875.4201 0 5 - 35875.4201 - - 0s H 0 0 39465.280110 35875.4201 9.10% - 0s 0 2 35875.7719 0 5 39465.2801 35875.7719 9.10% - 0s H 23 20 36243.484190 36073.4376 0.47% 14.5 0s * 24 16 20 36179.480889 36073.4376 0.29% 15.0 0s * 52 13 17 36178.034623 36079.2042 0.27% 13.7 0s * 53 11 17 36175.956088 36079.2042 0.27% 13.5 0s * 54 9 16 36173.352826 36079.2042 0.26% 13.4 0s Cutting planes: Gomory: 3 Flow cover: 22 Explored 81 nodes (2057 simplex iterations) in 0.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.617335282586e+04, best bound 3.617335282586e+04, gap 0.0%