Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:03:30 2013 Optimize a model with 145320 rows, 144120 columns and 576120 nonzeros Presolve removed 11273 rows and 0 columns Presolve time: 1.27s Presolved: 134047 rows, 144120 columns, 553574 nonzeros Variable types: 144000 continuous, 120 integer (120 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20129 1.4811610e+05 1.500850e+04 0.000000e+00 5s 27859 1.6248450e+05 1.952065e+02 0.000000e+00 10s 28190 1.6250260e+05 0.000000e+00 0.000000e+00 11s Root relaxation: objective 1.625026e+05, 28190 iterations, 10.51 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162502.603 0 4 - 162502.603 - - 12s H 0 0 167708.00000 162502.603 3.10% - 13s H 0 0 164857.00000 162502.603 1.43% - 13s H 0 0 163771.00000 162502.603 0.77% - 14s 0 0 162502.634 0 4 163771.000 162502.634 0.77% - 15s 0 0 162502.634 0 4 163771.000 162502.634 0.77% - 24s 0 0 162503.099 0 4 163771.000 162503.099 0.77% - 25s 0 0 162503.099 0 4 163771.000 162503.099 0.77% - 26s 0 2 162503.277 0 4 163771.000 162503.277 0.77% - 29s 2 5 162584.686 2 6 163771.000 162584.686 0.72% 194 30s H 4 4 162781.08108 162592.012 0.12% 110 30s H 5 4 162717.45455 162632.110 0.05% 137 30s * 10 4 9 162661.00000 162632.110 0.02% 81.3 30s Cutting planes: Gomory: 1 Flow cover: 4 Explored 12 nodes (45051 simplex iterations) in 31.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.626610000000e+05, best bound 1.626468266025e+05, gap 0.0087%