Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:45:57 2013 Optimize a model with 1050 rows, 25650 columns and 52000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.22s Presolved: 950 rows, 25550 columns, 51650 nonzeros Variable types: 25350 continuous, 200 integer (200 binary) Root relaxation: objective 1.626233e+05, 1557 iterations, 0.12 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 162708.439 0 5 - 162708.439 - - 0s 0 0 162726.798 0 4 - 162726.798 - - 0s 0 0 162732.282 0 4 - 162732.282 - - 0s 0 0 162732.538 0 4 - 162732.538 - - 0s 0 0 162732.722 0 4 - 162732.722 - - 0s 0 0 162733.097 0 5 - 162733.097 - - 1s 0 0 162733.097 0 5 - 162733.097 - - 1s H 0 0 163649.33815 162733.097 0.56% - 1s 0 2 162737.572 0 5 163649.338 162737.572 0.56% - 1s H 27 7 162972.97336 162853.666 0.07% 14.7 2s * 51 5 12 162915.62300 162861.229 0.03% 9.4 2s Cutting planes: Flow cover: 18 Explored 69 nodes (2525 simplex iterations) in 2.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629156229963e+05, best bound 1.629146491511e+05, gap 0.0006%