Gurobi 5.0.1 (linux64) logging started Sat Dec 8 10:25:07 2012 Optimize a model with 1095 rows, 1080 columns and 3560 nonzeros Presolve removed 91 rows and 56 columns Presolve time: 0.01s Presolved: 1004 rows, 1024 columns, 3339 nonzeros Variable types: 684 continuous, 340 integer (340 binary) Root relaxation: objective 9.933737e+04, 493 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 99337.3703 0 165 - 99337.3703 - - 0s H 0 0 158315.00000 99337.3703 37.3% - 0s H 0 0 157787.00000 99337.3703 37.0% - 0s 0 0 120022.209 0 33 157787.000 120022.209 23.9% - 0s 0 0 120505.795 0 13 157787.000 120505.795 23.6% - 0s 0 0 120647.272 0 6 157787.000 120647.272 23.5% - 0s 0 0 120655.287 0 2 157787.000 120655.287 23.5% - 0s H 0 0 120768.00000 120655.287 0.09% - 0s 0 2 120656.958 0 2 120768.000 120656.958 0.09% - 0s * 5 4 5 120690.00000 120658.836 0.03% 3.2 0s * 7 3 5 120688.00000 120658.836 0.02% 4.1 0s Cutting planes: Gomory: 16 Cover: 2 Implied bound: 1 Flow cover: 106 Flow path: 72 Explored 18 nodes (768 simplex iterations) in 0.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.206880000000e+05, best bound 1.206764753101e+05, gap 0.0095%