Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:40 2013 Optimize a model with 14896 rows, 14516 columns and 57836 nonzeros Presolve removed 38 rows and 0 columns Presolve time: 0.06s Presolved: 14858 rows, 14516 columns, 57798 nonzeros Variable types: 14478 continuous, 38 integer (38 binary) Root relaxation: objective 3.102195e+04, 1531 iterations, 0.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 31021.9487 0 27 - 31021.9487 - - 0s H 0 0 36792.000000 31021.9487 15.7% - 0s 0 0 34203.2828 0 6 36792.0000 34203.2828 7.04% - 0s H 0 0 36741.451338 34203.2828 6.91% - 0s H 0 0 36127.000000 34203.2828 5.32% - 0s 0 0 34559.8554 0 3 36127.0000 34559.8554 4.34% - 0s H 0 0 35684.071611 34559.8554 3.15% - 0s H 0 0 35083.000000 34559.8554 1.49% - 0s H 0 0 34961.000000 34559.8554 1.15% - 1s 0 2 34592.9591 0 3 34961.0000 34592.9591 1.05% - 1s * 4 2 4 34915.000000 34830.8333 0.24% 57.5 1s Cutting planes: Implied bound: 31 Explored 7 nodes (2856 simplex iterations) in 1.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.491500000000e+04, best bound 3.491500000000e+04, gap 0.0%