Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:45 2013 Optimize a model with 220 rows, 1380 columns and 3490 nonzeros Presolve removed 10 rows and 130 columns Presolve time: 0.00s Presolved: 210 rows, 1250 columns, 3290 nonzeros Variable types: 1210 continuous, 40 integer (40 binary) Root relaxation: objective 1.791602e+04, 116 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17916.0191 0 6 - 17916.0191 - - 0s 0 0 17925.3452 0 8 - 17925.3452 - - 0s 0 0 17925.4516 0 8 - 17925.4516 - - 0s 0 0 17925.4516 0 8 - 17925.4516 - - 0s H 0 0 17999.520498 17925.4516 0.41% - 0s 0 2 17943.2255 0 6 17999.5205 17943.2255 0.31% - 0s * 6 6 6 17983.774558 17963.2640 0.11% 9.5 0s Cutting planes: Gomory: 2 Flow cover: 5 Explored 13 nodes (295 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.798377455783e+04, best bound 1.798336776894e+04, gap 0.0023%