Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:16:26 2013 Optimize a model with 1700 rows, 26100 columns and 54050 nonzeros Presolve removed 200 rows and 150 columns Presolve time: 0.23s Presolved: 1500 rows, 25950 columns, 53250 nonzeros Variable types: 25500 continuous, 450 integer (450 binary) Root relaxation: objective 1.626233e+05, 2573 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 5 - 162623.326 - - 0s H 0 0 164012.11251 162623.326 0.85% - 0s 0 2 162628.974 0 5 164012.113 162628.974 0.84% - 0s H 12 8 162963.59997 162835.491 0.08% 26.1 1s H 15 8 162963.31703 162835.491 0.08% 21.6 1s H 19 11 162955.59735 162835.491 0.07% 17.9 1s H 29 18 162953.45749 162835.491 0.07% 13.0 1s * 33 15 25 162952.52641 162835.491 0.07% 12.5 1s H 42 10 162929.78574 162860.093 0.04% 13.6 1s H 46 11 162926.58309 162860.093 0.04% 13.1 1s * 50 9 15 162920.69863 162860.093 0.04% 12.9 1s * 54 7 14 162917.03806 162875.336 0.03% 12.8 1s Cutting planes: Implied bound: 5 Explored 62 nodes (3337 simplex iterations) in 1.53 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629170380581e+05, best bound 1.629017313329e+05, gap 0.0094%