Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:23:01 2013 Optimize a model with 1400 rows, 120300 columns and 260400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.21s Presolved: 1300 rows, 120200 columns, 240300 nonzeros Variable types: 120200 continuous, 0 integer (0 binary) Root relaxation: objective 7.672886e+05, 8997 iterations, 0.62 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 767288.564 0 3 - 767288.564 - - 1s 0 2 767288.564 0 3 - 767288.564 - - 4s 3 5 767838.591 2 1 - 767330.517 - 251 5s * 53 9 27 768348.87818 767812.496 0.07% 84.1 8s Explored 73 nodes (13808 simplex iterations) in 8.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.683488781772e+05, best bound 7.683488781772e+05, gap 0.0%