Gurobi 5.0.1 (linux64) logging started Sat Dec 8 10:29:53 2012 Optimize a model with 3255 rows, 3240 columns and 11830 nonzeros Presolve removed 427 rows and 115 columns Presolve time: 0.02s Presolved: 2828 rows, 3125 columns, 10961 nonzeros Variable types: 2787 continuous, 338 integer (338 binary) Root relaxation: objective 1.252650e+05, 530 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 125265.049 0 10 - 125265.049 - - 0s H 0 0 127192.00000 125265.049 1.51% - 0s 0 0 125401.421 0 15 127192.000 125401.421 1.41% - 0s 0 0 125504.205 0 20 127192.000 125504.205 1.33% - 0s 0 2 125504.496 0 20 127192.000 125504.496 1.33% - 0s H 27 23 126131.00000 125568.297 0.45% 3.5 0s * 35 26 29 126087.00000 125568.297 0.41% 3.7 0s H 54 25 125917.00000 125615.922 0.24% 3.6 0s * 56 21 24 125769.00000 125615.922 0.12% 3.7 0s Cutting planes: Gomory: 2 Flow cover: 9 Explored 241 nodes (1374 simplex iterations) in 0.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.257690000000e+05, best bound 1.257579148172e+05, gap 0.0088%