Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:18:06 2013 Optimize a model with 1100 rows, 26900 columns and 57450 nonzeros Presolve removed 50 rows and 650 columns Presolve time: 0.08s Presolved: 1050 rows, 26250 columns, 56450 nonzeros Variable types: 26050 continuous, 200 integer (200 binary) Root relaxation: objective 1.715514e+05, 2226 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 171551.420 0 4 - 171551.420 - - 0s H 0 0 196851.25107 171551.420 12.9% - 0s 0 0 171553.825 0 2 196851.251 171553.825 12.9% - 0s 0 0 171553.825 0 2 196851.251 171553.825 12.9% - 0s 0 2 171559.206 0 2 196851.251 171559.206 12.8% - 0s * 9 3 9 171584.76124 171584.761 0.0% 25.4 0s Cutting planes: Flow cover: 1 Explored 10 nodes (2841 simplex iterations) in 0.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.715847612416e+05, best bound 1.715847612416e+05, gap 0.0%