Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:56:01 2013 Optimize a model with 2700 rows, 27100 columns and 58050 nonzeros Presolve removed 150 rows and 100 columns Presolve time: 0.21s Presolved: 2550 rows, 27000 columns, 55900 nonzeros Variable types: 26050 continuous, 950 integer (950 binary) Root relaxation: objective 2.252562e+05, 4418 iterations, 0.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 225256.157 0 1 - 225256.157 - - 0s 0 0 225292.554 0 1 - 225292.554 - - 0s 0 0 225296.130 0 1 - 225296.130 - - 0s 0 0 225315.480 0 1 - 225315.480 - - 0s H 0 0 229917.33791 225315.480 2.00% - 0s 0 0 225316.402 0 2 229917.338 225316.402 2.00% - 0s H 0 0 227952.66891 225316.402 1.16% - 1s 0 0 225319.526 0 1 227952.669 225319.526 1.16% - 1s 0 0 225321.381 0 1 227952.669 225321.381 1.15% - 1s 0 0 225322.786 0 2 227952.669 225322.786 1.15% - 1s 0 0 225323.631 0 2 227952.669 225323.631 1.15% - 1s 0 0 225323.683 0 2 227952.669 225323.683 1.15% - 1s 0 0 225324.028 0 1 227952.669 225324.028 1.15% - 1s 0 0 225324.947 0 1 227952.669 225324.947 1.15% - 1s 0 0 225324.947 0 1 227952.669 225324.947 1.15% - 1s 0 0 225325.066 0 1 227952.669 225325.066 1.15% - 1s 0 0 225325.098 0 1 227952.669 225325.098 1.15% - 1s 0 2 225376.441 0 1 227952.669 225376.441 1.13% - 1s H 5 4 225938.04489 225852.407 0.04% 120 2s * 9 2 8 225915.15199 225852.407 0.03% 86.1 2s Cutting planes: Flow cover: 15 Explored 11 nodes (5350 simplex iterations) in 2.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.259151519913e+05, best bound 2.258956360683e+05, gap 0.0086%