Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:29:32 2013 Optimize a model with 6600 rows, 110300 columns and 235500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.80s Presolved: 6500 rows, 110200 columns, 230400 nonzeros Variable types: 105200 continuous, 5000 integer (5000 binary) Root relaxation: objective 7.672886e+05, 10490 iterations, 1.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 767288.564 0 6 - 767288.564 - - 2s 0 0 767329.362 0 4 - 767329.362 - - 4s 0 0 767329.362 0 4 - 767329.362 - - 4s 0 0 767329.362 0 4 - 767329.362 - - 4s 0 0 767329.362 0 4 - 767329.362 - - 5s 0 0 767329.362 0 4 - 767329.362 - - 6s 0 0 767329.362 0 4 - 767329.362 - - 6s 0 0 767329.362 0 4 - 767329.362 - - 7s H 0 0 779352.98914 767329.362 1.54% - 8s 0 2 767329.362 0 4 779352.989 767329.362 1.54% - 11s 10 12 767981.814 5 2 779352.989 767812.496 1.48% 199 15s 24 25 770387.220 13 2 779352.989 767812.496 1.48% 232 20s 54 37 770967.363 34 4 779352.989 767812.496 1.48% 124 25s * 57 7 36 768348.43892 767812.496 0.07% 118 25s Cutting planes: Implied bound: 30 Flow cover: 7 Explored 75 nodes (21316 simplex iterations) in 26.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.683484389204e+05, best bound 7.683484389204e+05, gap 0.0%