Gurobi 5.0.1 (linux64) logging started Sat Dec 8 10:29:54 2012 Optimize a model with 3255 rows, 3240 columns and 11845 nonzeros Presolve removed 379 rows and 92 columns Presolve time: 0.02s Presolved: 2876 rows, 3148 columns, 11064 nonzeros Variable types: 2808 continuous, 340 integer (340 binary) Root relaxation: objective 1.217818e+05, 542 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 121781.754 0 14 - 121781.754 - - 0s H 0 0 123606.00000 121781.754 1.48% - 0s H 0 0 122866.00000 121781.754 0.88% - 0s 0 0 121839.416 0 24 122866.000 121839.416 0.84% - 0s 0 0 121851.538 0 24 122866.000 121851.538 0.83% - 0s 0 0 121865.195 0 23 122866.000 121865.195 0.81% - 0s 0 0 121872.192 0 24 122866.000 121872.192 0.81% - 0s 0 2 121887.804 0 24 122866.000 121887.804 0.80% - 0s * 59 40 54 122426.00000 121930.396 0.40% 5.4 0s H 88 51 122388.00000 121946.886 0.36% 5.0 0s * 112 65 46 122382.00000 121946.886 0.36% 4.6 0s H 142 45 122119.00000 121951.573 0.14% 4.6 0s H 209 55 122062.00000 121961.102 0.08% 5.0 0s * 211 50 28 122058.00000 121961.102 0.08% 5.0 0s * 279 66 25 122057.00000 121986.626 0.06% 4.6 0s * 313 55 17 122040.00000 121998.578 0.03% 4.7 0s * 377 19 17 122034.00000 122025.093 0.01% 4.6 0s Cutting planes: Gomory: 6 Flow cover: 12 Explored 378 nodes (2328 simplex iterations) in 0.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.220340000000e+05, best bound 1.220250927208e+05, gap 0.0073%