Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:56:34 2013 Optimize a model with 13392 rows, 13032 columns and 51912 nonzeros Presolve removed 36 rows and 0 columns Presolve time: 0.06s Presolved: 13356 rows, 13032 columns, 51876 nonzeros Variable types: 12996 continuous, 36 integer (36 binary) Root relaxation: objective 3.066403e+04, 1497 iterations, 0.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 30664.0278 0 27 - 30664.0278 - - 0s H 0 0 34842.000000 30664.0278 12.0% - 0s 0 0 33470.3443 0 3 34842.0000 33470.3443 3.94% - 0s H 0 0 33652.680066 33470.3443 0.54% - 0s H 0 0 33504.000000 33470.3443 0.10% - 0s 0 0 33491.0000 0 2 33504.0000 33491.0000 0.04% - 0s H 0 0 33496.000000 33491.0000 0.01% - 0s 0 2 33491.4683 0 2 33496.0000 33491.4683 0.01% - 1s * 2 2 2 33493.000000 33492.4598 0.00% 9.0 1s Cutting planes: Implied bound: 25 Explored 3 nodes (2182 simplex iterations) in 1.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.349300000000e+04, best bound 3.349245977011e+04, gap 0.0016%