Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:54:01 2013 Optimize a model with 57150 rows, 56400 columns and 225150 nonzeros Presolve removed 75 rows and 0 columns Presolve time: 0.26s Presolved: 57075 rows, 56400 columns, 225075 nonzeros Variable types: 56325 continuous, 75 integer (75 binary) Root relaxation: objective 6.006602e+04, 6479 iterations, 3.72 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60066.0178 0 60 - 60066.0178 - - 4s H 0 0 101757.00000 60066.0178 41.0% - 7s 0 0 74503.7448 0 17 101757.000 74503.7448 26.8% - 14s H 0 0 89073.000000 74503.7448 16.4% - 15s 0 0 77541.6959 0 4 89073.0000 77541.6959 12.9% - 17s H 0 0 79982.551373 77541.6959 3.05% - 17s H 0 0 78929.000000 77541.6959 1.76% - 17s 0 0 77738.8690 0 3 78929.0000 77738.8690 1.51% - 17s 0 0 77787.4128 0 3 78929.0000 77787.4128 1.45% - 18s 0 2 77792.3846 0 3 78929.0000 77792.3846 1.44% - 19s 5 6 78021.3320 5 2 78929.0000 77950.5000 1.24% 259 20s H 9 7 78641.727273 77950.5000 0.88% 213 20s H 15 8 78584.857143 77950.5000 0.81% 196 21s * 18 7 18 78373.000000 77950.5000 0.54% 190 22s H 21 3 78165.000000 77960.8095 0.26% 181 22s H 22 3 78083.447368 77960.8095 0.16% 179 22s * 24 5 6 78066.000000 77960.8095 0.13% 169 22s Cutting planes: Implied bound: 72 Explored 33 nodes (18322 simplex iterations) in 22.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.806600000000e+04, best bound 7.806600000000e+04, gap 0.0%