Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:00:23 2013 Optimize a model with 18102 rows, 17682 columns and 70602 nonzeros Presolve removed 1107 rows and 0 columns Presolve time: 0.10s Presolved: 16995 rows, 17682 columns, 68388 nonzeros Variable types: 17640 continuous, 42 integer (42 binary) Root relaxation: objective 4.025933e+04, 2337 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40259.3333 0 2 - 40259.3333 - - 0s H 0 0 40376.000000 40259.3333 0.29% - 0s 0 0 40260.3182 0 3 40376.0000 40260.3182 0.29% - 0s 0 0 40260.5996 0 3 40376.0000 40260.5996 0.29% - 0s 0 0 40281.0112 0 2 40376.0000 40281.0112 0.24% - 0s 0 0 40350.4390 0 2 40376.0000 40350.4390 0.06% - 0s H 0 0 40369.000000 40350.4390 0.05% - 0s 0 0 40350.4390 0 2 40369.0000 40350.4390 0.05% - 1s 0 0 40360.2500 0 1 40369.0000 40360.2500 0.02% - 1s 0 0 40360.3279 0 2 40369.0000 40360.3279 0.02% - 1s Cutting planes: Gomory: 3 Explored 0 nodes (3049 simplex iterations) in 1.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.036900000000e+04, best bound 4.036900000000e+04, gap 0.0%