Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:11:40 2013 Optimize a model with 1320 rows, 144120 columns and 288120 nonzeros Presolve time: 0.30s Presolved: 1320 rows, 144120 columns, 288120 nonzeros Variable types: 144000 continuous, 120 integer (120 binary) Root relaxation: objective 1.599500e+05, 4698 iterations, 0.25 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 159949.990 0 7 - 159949.990 - - 0s H 0 0 166364.00000 159949.990 3.86% - 0s H 0 0 161766.00000 159949.990 1.12% - 1s 0 0 160606.464 0 6 161766.000 160606.464 0.72% - 1s 0 0 160606.464 0 7 161766.000 160606.464 0.72% - 2s 0 0 160613.367 0 6 161766.000 160613.367 0.71% - 3s 0 0 160655.609 0 6 161766.000 160655.609 0.69% - 3s 0 0 160668.151 0 5 161766.000 160668.151 0.68% - 3s 0 0 160672.528 0 5 161766.000 160672.528 0.68% - 3s 0 0 160673.049 0 4 161766.000 160673.049 0.68% - 3s 0 0 160673.049 0 4 161766.000 160673.049 0.68% - 3s 0 0 160673.067 0 5 161766.000 160673.067 0.68% - 4s 0 0 160673.252 0 5 161766.000 160673.252 0.68% - 4s 0 2 160685.027 0 5 161766.000 160685.027 0.67% - 5s H 10 9 161128.00000 160897.846 0.14% 144 6s * 14 11 11 161110.00000 160897.846 0.13% 115 6s * 23 10 8 161036.00000 160919.012 0.07% 95.8 6s Cutting planes: Implied bound: 179 Flow cover: 13 Explored 41 nodes (12894 simplex iterations) in 7.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.610360000000e+05, best bound 1.610343920705e+05, gap 0.0010%