Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:59:41 2013 Optimize a model with 1800 rows, 27150 columns and 57250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.21s Presolved: 1750 rows, 27100 columns, 56200 nonzeros Variable types: 26100 continuous, 1000 integer (1000 binary) Root relaxation: objective 2.252562e+05, 3338 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 225256.157 0 2 - 225256.157 - - 0s H 0 0 228387.57785 225256.157 1.37% - 0s 0 0 225296.037 0 2 228387.578 225296.037 1.35% - 0s 0 0 225299.762 0 2 228387.578 225299.762 1.35% - 0s 0 0 225311.611 0 4 228387.578 225311.611 1.35% - 0s H 0 0 227952.66891 225311.611 1.16% - 0s 0 0 225312.750 0 4 227952.669 225312.750 1.16% - 0s 0 0 225313.953 0 4 227952.669 225313.953 1.16% - 0s 0 0 225317.755 0 4 227952.669 225317.755 1.16% - 0s 0 0 225317.755 0 4 227952.669 225317.755 1.16% - 1s 0 0 225317.959 0 4 227952.669 225317.959 1.16% - 1s 0 0 225318.621 0 4 227952.669 225318.621 1.16% - 1s 0 0 225318.957 0 4 227952.669 225318.957 1.16% - 1s 0 0 225319.451 0 2 227952.669 225319.451 1.16% - 1s 0 0 225319.585 0 4 227952.669 225319.585 1.16% - 1s 0 0 225319.849 0 4 227952.669 225319.849 1.15% - 1s 0 0 225319.932 0 2 227952.669 225319.932 1.15% - 1s 0 0 225319.949 0 4 227952.669 225319.949 1.15% - 1s 0 0 225319.949 0 4 227952.669 225319.949 1.15% - 1s 0 2 225319.949 0 4 227952.669 225319.949 1.15% - 1s * 19 3 10 225915.15199 225915.152 0.0% 160 3s Cutting planes: Implied bound: 2 Flow cover: 15 Explored 20 nodes (8428 simplex iterations) in 3.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.259151519913e+05, best bound 2.259151519913e+05, gap 0.0%