Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:43 2013 Optimize a model with 64 rows, 1064 columns and 11142 nonzeros Presolve removed 22 rows and 24 columns Presolve time: 0.03s Presolved: 42 rows, 1040 columns, 10096 nonzeros Variable types: 1022 continuous, 18 integer (18 binary) Root relaxation: objective 3.881594e+03, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3881.59364 0 3 - 3881.59364 - - 0s 0 0 3881.86365 0 3 - 3881.86365 - - 0s 0 0 3882.62282 0 3 - 3882.62282 - - 0s 0 0 3882.64485 0 3 - 3882.64485 - - 0s 0 0 3882.72171 0 4 - 3882.72171 - - 0s 0 0 3891.94431 0 3 - 3891.94431 - - 0s 0 0 3893.18119 0 3 - 3893.18119 - - 0s 0 0 3893.65715 0 3 - 3893.65715 - - 0s 0 0 3893.87059 0 3 - 3893.87059 - - 0s 0 0 3893.87059 0 3 - 3893.87059 - - 0s H 0 0 3893.9001087 3893.87059 0.00% - 0s Cutting planes: Implied bound: 1 Flow cover: 2 Explored 0 nodes (79 simplex iterations) in 0.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.893900108683e+03, best bound 3.893870593153e+03, gap 0.0008%