Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:10:40 2013 Optimize a model with 1400 rows, 38250 columns and 150750 nonzeros Presolve removed 50 rows and 2850 columns Presolve time: 0.21s Presolved: 1350 rows, 35400 columns, 140750 nonzeros Variable types: 35050 continuous, 350 integer (350 binary) Root relaxation: objective 1.626233e+05, 2078 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 20 - 162623.326 - - 0s 0 0 162645.353 0 20 - 162645.353 - - 0s 0 0 162648.734 0 20 - 162648.734 - - 0s 0 0 162650.989 0 20 - 162650.989 - - 1s 0 0 162650.989 0 20 - 162650.989 - - 1s 0 0 162650.989 0 20 - 162650.989 - - 1s 0 0 162650.989 0 20 - 162650.989 - - 1s 0 0 162650.989 0 20 - 162650.989 - - 1s 0 0 162650.989 0 20 - 162650.989 - - 2s H 0 0 164674.73366 162650.989 1.23% - 2s 0 2 162650.989 0 20 164674.734 162650.989 1.23% - 2s H 27 18 162944.34410 162783.427 0.10% 24.7 3s * 40 19 34 162923.02775 162783.427 0.09% 19.2 3s H 108 29 162919.62568 162860.832 0.04% 11.9 4s * 125 33 23 162918.18485 162862.497 0.03% 10.7 4s 234 33 162893.620 22 4 162918.185 162881.051 0.02% 8.0 5s Cutting planes: Flow cover: 10 Explored 293 nodes (5585 simplex iterations) in 5.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629181848492e+05, best bound 1.629049651929e+05, gap 0.0081%