Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:59 2013 Optimize a model with 12670 rows, 12320 columns and 49070 nonzeros Presolve removed 35 rows and 0 columns Presolve time: 0.05s Presolved: 12635 rows, 12320 columns, 49035 nonzeros Variable types: 12285 continuous, 35 integer (35 binary) Root relaxation: objective 2.879981e+04, 1476 iterations, 0.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28799.8128 0 27 - 28799.8128 - - 0s H 0 0 33685.000000 28799.8128 14.5% - 0s 0 0 31506.8750 0 1 33685.0000 31506.8750 6.47% - 0s H 0 0 32138.625000 31506.8750 1.97% - 0s H 0 0 32056.000000 31506.8750 1.71% - 0s H 0 0 31523.000000 31506.8750 0.05% - 0s Cutting planes: Implied bound: 25 Explored 0 nodes (1981 simplex iterations) in 0.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.152300000000e+04, best bound 3.152300000000e+04, gap 0.0%