Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:18:27 2013 Optimize a model with 1300 rows, 26150 columns and 53750 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.15s Presolved: 1200 rows, 26050 columns, 53400 nonzeros Variable types: 25600 continuous, 450 integer (450 binary) Root relaxation: objective 1.626233e+05, 1971 iterations, 0.06 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 0 0 162707.849 0 5 - 162707.849 - - 0s 0 0 162725.314 0 5 - 162725.314 - - 0s 0 0 162726.349 0 5 - 162726.349 - - 0s 0 0 162730.554 0 4 - 162730.554 - - 0s 0 0 162731.141 0 4 - 162731.141 - - 0s 0 0 162732.375 0 4 - 162732.375 - - 0s 0 0 162732.414 0 4 - 162732.414 - - 0s 0 0 162732.871 0 4 - 162732.871 - - 0s 0 0 162733.569 0 4 - 162733.569 - - 0s 0 0 162733.769 0 4 - 162733.769 - - 0s 0 0 162733.769 0 4 - 162733.769 - - 0s 0 0 162733.769 0 4 - 162733.769 - - 1s 0 0 162733.769 0 4 - 162733.769 - - 1s H 0 0 163703.36360 162733.769 0.59% - 1s 0 2 162733.841 0 4 163703.364 162733.841 0.59% - 1s H 27 12 163067.72076 162844.530 0.14% 14.4 1s H 54 9 162933.76086 162844.530 0.05% 8.4 2s * 97 20 15 162917.03806 162857.150 0.04% 7.0 2s Cutting planes: Flow cover: 25 Explored 128 nodes (3491 simplex iterations) in 2.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629170380581e+05, best bound 1.629009122693e+05, gap 0.0099%