Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:51:47 2013 Optimize a model with 1300 rows, 31800 columns and 95650 nonzeros Presolve removed 50 rows and 1450 columns Presolve time: 0.15s Presolved: 1250 rows, 30350 columns, 90650 nonzeros Variable types: 30050 continuous, 300 integer (300 binary) Root relaxation: objective 1.749223e+05, 2163 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 174922.321 0 6 - 174922.321 - - 0s H 0 0 180433.36012 174922.321 3.05% - 0s 0 0 174936.131 0 6 180433.360 174936.131 3.05% - 0s 0 0 174943.779 0 6 180433.360 174943.779 3.04% - 0s H 0 0 179715.08369 174943.779 2.65% - 0s 0 0 174943.779 0 6 179715.084 174943.779 2.65% - 0s 0 0 174944.156 0 6 179715.084 174944.156 2.65% - 1s 0 0 174944.721 0 6 179715.084 174944.721 2.65% - 1s 0 0 174944.742 0 6 179715.084 174944.742 2.65% - 1s 0 0 174944.750 0 6 179715.084 174944.750 2.65% - 1s 0 0 174944.751 0 6 179715.084 174944.751 2.65% - 1s 0 0 174944.751 0 6 179715.084 174944.751 2.65% - 1s 0 2 174945.650 0 6 179715.084 174945.650 2.65% - 2s H 27 23 178752.46200 175072.361 2.06% 27.4 3s H 54 39 176650.61051 175072.361 0.89% 18.4 3s * 80 27 17 176348.93698 175097.603 0.71% 20.4 4s 137 33 175682.849 5 4 176348.937 175493.356 0.49% 26.6 5s * 202 64 23 176271.26267 175561.024 0.40% 24.3 5s * 244 49 22 176253.02075 175989.020 0.15% 23.2 6s H 292 11 176244.83739 176187.310 0.03% 20.3 6s * 364 4 11 176210.35534 176190.432 0.01% 16.9 6s Cutting planes: Flow cover: 10 Explored 366 nodes (9327 simplex iterations) in 6.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.762103553441e+05, best bound 1.761938965051e+05, gap 0.0093%