Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:23 2013 Optimize a model with 28 rows, 146 columns and 388 nonzeros Presolve removed 22 rows and 24 columns Presolve time: 0.00s Presolved: 6 rows, 122 columns, 242 nonzeros Variable types: 122 continuous, 0 integer (0 binary) Root relaxation: objective 4.810927e+03, 8 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4810.92679 0 2 - 4810.92679 - - 0s 0 2 4810.92679 0 2 - 4810.92679 - - 0s * 21 5 11 4831.3249010 4831.08121 0.01% 1.5 0s Explored 22 nodes (39 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.831324901037e+03, best bound 4.831081209324e+03, gap 0.0050%