Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:48:16 2013 Optimize a model with 66501 rows, 65691 columns and 262521 nonzeros Presolve removed 3461 rows and 0 columns Presolve time: 0.43s Presolved: 63040 rows, 65691 columns, 255599 nonzeros Variable types: 65610 continuous, 81 integer (81 binary) Root relaxation: objective 9.955811e+04, 15348 iterations, 3.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 99558.1092 0 3 - 99558.1092 - - 4s H 0 0 101132.00000 99558.1092 1.56% - 4s H 0 0 100256.00000 99558.1092 0.70% - 4s 0 0 99560.2824 0 4 100256.000 99560.2824 0.69% - 4s 0 0 99560.2824 0 4 100256.000 99560.2824 0.69% - 5s 0 0 99560.2824 0 4 100256.000 99560.2824 0.69% - 6s 0 0 99560.2824 0 4 100256.000 99560.2824 0.69% - 6s 0 2 99562.8521 0 4 100256.000 99562.8521 0.69% - 9s 2 4 99756.9499 1 3 100256.000 99756.9499 0.50% 476 10s H 13 9 100238.00000 99791.1161 0.45% 195 11s H 14 9 100224.00000 99791.1161 0.43% 186 12s * 15 8 13 100176.00000 99791.1161 0.38% 175 12s H 21 8 100042.38710 99808.3919 0.23% 159 12s * 26 8 9 99968.000000 99808.3919 0.16% 150 12s Cutting planes: Gomory: 1 Flow cover: 7 Explored 36 nodes (20141 simplex iterations) in 13.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.996800000000e+04, best bound 9.996445762712e+04, gap 0.0035%