Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:58:46 2013 Optimize a model with 1200 rows, 28550 columns and 66550 nonzeros Presolve removed 50 rows and 1250 columns Presolve time: 0.09s Presolved: 1150 rows, 27300 columns, 64550 nonzeros Variable types: 27050 continuous, 250 integer (250 binary) Root relaxation: objective 2.252562e+05, 2669 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 225256.157 0 3 - 225256.157 - - 0s 0 0 225292.554 0 3 - 225292.554 - - 0s 0 0 225295.013 0 6 - 225295.013 - - 0s 0 0 225313.387 0 6 - 225313.387 - - 0s 0 0 225313.431 0 6 - 225313.431 - - 0s 0 0 225313.831 0 6 - 225313.831 - - 0s 0 0 225314.153 0 6 - 225314.153 - - 0s 0 0 225314.392 0 6 - 225314.392 - - 0s 0 0 225315.471 0 6 - 225315.471 - - 0s 0 0 225318.094 0 6 - 225318.094 - - 0s 0 0 225318.094 0 6 - 225318.094 - - 1s 0 0 225318.400 0 3 - 225318.400 - - 1s 0 0 225318.773 0 6 - 225318.773 - - 1s 0 0 225319.023 0 6 - 225319.023 - - 1s 0 0 225319.023 0 6 - 225319.023 - - 1s H 0 0 227952.66891 225319.023 1.16% - 1s 0 2 225319.023 0 6 227952.669 225319.023 1.16% - 1s * 10 4 10 225915.15199 225896.011 0.01% 100 2s Cutting planes: Flow cover: 11 Explored 11 nodes (5533 simplex iterations) in 2.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.259151519913e+05, best bound 2.258960110937e+05, gap 0.0085%