Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:51:09 2013 Optimize a model with 55648 rows, 54908 columns and 219188 nonzeros Presolve removed 74 rows and 0 columns Presolve time: 0.25s Presolved: 55574 rows, 54908 columns, 219114 nonzeros Variable types: 54834 continuous, 74 integer (74 binary) Root relaxation: objective 6.314264e+04, 6610 iterations, 4.61 seconds Total elapsed time = 5.12s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 63142.6380 0 58 - 63142.6380 - - 5s H 0 0 102688.00000 63142.6380 38.5% - 8s 0 0 79664.6814 0 8 102688.000 79664.6814 22.4% - 13s H 0 0 90554.291905 79664.6814 12.0% - 13s H 0 0 84098.000000 79664.6814 5.27% - 14s H 0 0 83989.000000 79664.6814 5.15% - 14s 0 0 81342.9238 0 9 83989.0000 81342.9238 3.15% - 15s 0 0 81466.4366 0 4 83989.0000 81466.4366 3.00% - 16s H 0 0 83954.000000 81466.4366 2.96% - 16s 0 0 81466.4366 0 4 83954.0000 81466.4366 2.96% - 17s H 0 0 83541.610925 81466.4366 2.48% - 18s H 0 0 83382.797439 81466.4366 2.30% - 18s H 0 0 83269.900826 81466.4366 2.17% - 18s H 0 0 81871.000000 81466.4366 0.49% - 19s 0 2 81466.5872 0 4 81871.0000 81466.5872 0.49% - 19s H 3 3 81727.534247 81569.2877 0.19% 145 19s H 4 4 81650.703704 81569.2877 0.10% 118 19s * 5 5 5 81581.000000 81569.2877 0.01% 103 19s Cutting planes: Implied bound: 65 Explored 8 nodes (14319 simplex iterations) in 19.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.158100000000e+04, best bound 8.157941848077e+04, gap 0.0019%