Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:50:35 2013 Optimize a model with 560 rows, 6200 columns and 26500 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.04s Presolved: 540 rows, 6180 columns, 24480 nonzeros Variable types: 6040 continuous, 140 integer (140 binary) Root relaxation: objective 3.573401e+04, 450 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 9 - 35734.0139 - - 0s 0 0 35736.6527 0 9 - 35736.6527 - - 0s 0 0 35737.5620 0 9 - 35737.5620 - - 0s 0 0 35737.8570 0 9 - 35737.8570 - - 0s 0 0 35738.1695 0 9 - 35738.1695 - - 0s 0 0 35738.7687 0 11 - 35738.7687 - - 0s 0 0 35738.7687 0 11 - 35738.7687 - - 0s 0 0 35738.8219 0 11 - 35738.8219 - - 0s 0 0 35738.8219 0 11 - 35738.8219 - - 0s 0 0 35738.8219 0 11 - 35738.8219 - - 0s H 0 0 36254.107425 35738.8219 1.42% - 0s 0 2 35803.9601 0 11 36254.1074 35803.9601 1.24% - 0s * 17 9 16 36178.483421 36004.9064 0.48% 16.2 0s * 30 7 14 36175.683193 36170.6070 0.01% 14.2 0s Cutting planes: Flow cover: 11 Explored 37 nodes (1344 simplex iterations) in 0.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.617568319306e+04, best bound 3.617343977492e+04, gap 0.0062%