Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:38:54 2013 Optimize a model with 64880 rows, 64080 columns and 256080 nonzeros Presolve removed 4087 rows and 0 columns Presolve time: 0.41s Presolved: 60793 rows, 64080 columns, 247906 nonzeros Variable types: 64000 continuous, 80 integer (80 binary) Root relaxation: objective 1.009267e+05, 15384 iterations, 3.28 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 100926.705 0 4 - 100926.705 - - 3s H 0 0 101558.00000 100926.705 0.62% - 4s H 0 0 101398.00000 100926.705 0.46% - 4s 0 0 100927.349 0 5 101398.000 100927.349 0.46% - 4s 0 0 100927.384 0 5 101398.000 100927.384 0.46% - 4s 0 0 100927.392 0 6 101398.000 100927.392 0.46% - 5s 0 0 100927.397 0 5 101398.000 100927.397 0.46% - 6s 0 0 100927.397 0 4 101398.000 100927.397 0.46% - 10s 0 0 100928.400 0 5 101398.000 100928.400 0.46% - 10s 0 0 100928.439 0 6 101398.000 100928.439 0.46% - 10s 0 0 100928.499 0 5 101398.000 100928.499 0.46% - 11s 0 0 100928.499 0 5 101398.000 100928.499 0.46% - 11s 0 2 100931.030 0 5 101398.000 100931.030 0.46% - 12s H 2 2 101333.00000 100976.642 0.35% 53.5 12s H 4 4 101260.69231 101007.328 0.25% 96.5 12s H 6 5 101098.65217 101007.328 0.09% 86.8 13s * 14 5 10 101086.00000 101007.328 0.08% 55.6 13s * 19 2 10 101079.00000 101053.714 0.03% 54.3 13s * 20 0 6 101058.00000 101058.000 0.0% 51.6 13s Cutting planes: Gomory: 1 Flow cover: 8 Explored 21 nodes (23444 simplex iterations) in 13.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.010580000000e+05, best bound 1.010580000000e+05, gap 0.0%