Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:37 2013 Optimize a model with 3438 rows, 3258 columns and 12978 nonzeros Presolve removed 293 rows and 0 columns Presolve time: 0.02s Presolved: 3145 rows, 3258 columns, 12392 nonzeros Variable types: 3240 continuous, 18 integer (18 binary) Root relaxation: objective 3.113800e+04, 553 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 31138.000000 31138.0000 0.0% - 0s Explored 0 nodes (553 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.113800000000e+04, best bound 3.113800000000e+04, gap 0.0%