Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:33 2013 Optimize a model with 1080 rows, 4840 columns and 11220 nonzeros Presolve removed 60 rows and 40 columns Presolve time: 0.03s Presolved: 1020 rows, 4800 columns, 10360 nonzeros Variable types: 4420 continuous, 380 integer (380 binary) Root relaxation: objective 3.894400e+04, 785 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38944.0027 0 2 - 38944.0027 - - 0s 0 0 39048.7202 0 2 - 39048.7202 - - 0s 0 0 39048.7202 0 2 - 39048.7202 - - 0s 0 0 39053.3961 0 2 - 39053.3961 - - 0s 0 0 39056.3138 0 3 - 39056.3138 - - 0s 0 0 39061.0634 0 2 - 39061.0634 - - 0s 0 0 39063.1528 0 2 - 39063.1528 - - 0s 0 0 39063.1528 0 2 - 39063.1528 - - 0s H 0 0 42863.785437 39063.1528 8.87% - 0s 0 2 39065.9494 0 2 42863.7854 39065.9494 8.86% - 0s H 7 6 39258.033695 39157.1742 0.26% 10.1 0s H 8 5 39252.297257 39157.1742 0.24% 13.1 0s H 9 5 39252.122380 39157.1742 0.24% 12.0 0s * 10 5 10 39246.875698 39157.1742 0.23% 13.3 0s Cutting planes: Gomory: 1 Flow cover: 13 Explored 27 nodes (1164 simplex iterations) in 0.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.924687569829e+04, best bound 3.924687569829e+04, gap 0.0%