Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:25:27 2013 Optimize a model with 781 rows, 50481 columns and 100891 nonzeros Presolve time: 0.07s Presolved: 781 rows, 50481 columns, 100891 nonzeros Variable types: 50410 continuous, 71 integer (71 binary) Root relaxation: objective 8.820044e+04, 2488 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 88200.4386 0 8 - 88200.4386 - - 0s H 0 0 90187.000000 88200.4386 2.20% - 0s H 0 0 88813.000000 88200.4386 0.69% - 0s 0 0 88630.0502 0 5 88813.0000 88630.0502 0.21% - 0s 0 0 88630.0502 0 8 88813.0000 88630.0502 0.21% - 0s 0 0 88630.0502 0 5 88813.0000 88630.0502 0.21% - 0s 0 0 88656.9609 0 7 88813.0000 88656.9609 0.18% - 0s 0 0 88669.3234 0 4 88813.0000 88669.3234 0.16% - 0s 0 0 88669.7106 0 3 88813.0000 88669.7106 0.16% - 1s 0 0 88673.4354 0 3 88813.0000 88673.4354 0.16% - 1s 0 0 88673.4354 0 3 88813.0000 88673.4354 0.16% - 1s 0 0 88673.4354 0 3 88813.0000 88673.4354 0.16% - 1s 0 0 88673.4354 0 3 88813.0000 88673.4354 0.16% - 1s 0 2 88684.1296 0 3 88813.0000 88684.1296 0.15% - 1s * 10 5 9 88805.000000 88717.1835 0.10% 47.1 1s Cutting planes: Implied bound: 102 Explored 30 nodes (7147 simplex iterations) in 1.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.880500000000e+04, best bound 8.880300232929e+04, gap 0.0022%