Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:17:06 2013 Optimize a model with 800 rows, 25400 columns and 50850 nonzeros Presolve removed 100 rows and 150 columns Presolve time: 0.07s Presolved: 700 rows, 25250 columns, 50500 nonzeros Variable types: 25200 continuous, 50 integer (50 binary) Root relaxation: objective 1.626233e+05, 2134 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 5 - 162623.326 - - 0s H 0 0 173948.67734 162623.326 6.51% - 0s H 0 0 163774.06075 162623.326 0.70% - 0s 0 0 162694.905 0 5 163774.061 162694.905 0.66% - 0s 0 0 162716.415 0 6 163774.061 162716.415 0.65% - 0s 0 0 162727.431 0 5 163774.061 162727.431 0.64% - 0s 0 0 162731.137 0 4 163774.061 162731.137 0.64% - 0s 0 0 162731.455 0 4 163774.061 162731.455 0.64% - 0s 0 0 162731.800 0 4 163774.061 162731.800 0.64% - 0s 0 0 162731.940 0 4 163774.061 162731.940 0.64% - 0s 0 0 162731.985 0 4 163774.061 162731.985 0.64% - 0s 0 0 162732.587 0 4 163774.061 162732.587 0.64% - 0s 0 0 162732.962 0 4 163774.061 162732.962 0.64% - 1s 0 0 162733.148 0 4 163774.061 162733.148 0.64% - 1s 0 0 162733.633 0 4 163774.061 162733.633 0.64% - 1s 0 0 162734.437 0 4 163774.061 162734.437 0.63% - 1s 0 0 162734.437 0 4 163774.061 162734.437 0.63% - 1s 0 0 162736.573 0 4 163774.061 162736.573 0.63% - 1s 0 0 162736.743 0 4 163774.061 162736.743 0.63% - 1s 0 0 162736.743 0 4 163774.061 162736.743 0.63% - 1s 0 0 162736.743 0 4 163774.061 162736.743 0.63% - 1s H 0 0 163537.80026 162736.743 0.49% - 1s 0 2 162737.351 0 4 163537.800 162737.351 0.49% - 1s * 12 3 10 162910.04610 162863.320 0.03% 28.3 2s * 14 2 11 162887.15892 162863.320 0.01% 24.8 2s Cutting planes: Flow cover: 24 Explored 16 nodes (3104 simplex iterations) in 2.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.628871589165e+05, best bound 1.628859752393e+05, gap 0.0007%