Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:53:08 2013 Optimize a model with 1300 rows, 27950 columns and 71100 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.14s Presolved: 1250 rows, 27900 columns, 68550 nonzeros Variable types: 27600 continuous, 300 integer (300 binary) Root relaxation: objective 2.252562e+05, 3028 iterations, 0.13 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 225289.333 0 6 - 225289.333 - - 0s 0 0 225290.045 0 6 - 225290.045 - - 0s 0 0 225290.519 0 6 - 225290.519 - - 0s 0 0 225290.519 0 6 - 225290.519 - - 0s 0 0 225292.652 0 6 - 225292.652 - - 0s 0 0 225292.652 0 6 - 225292.652 - - 0s 0 0 225292.652 0 6 - 225292.652 - - 0s 0 0 225292.652 0 6 - 225292.652 - - 0s 0 0 225292.652 0 6 - 225292.652 - - 1s 0 0 225292.652 0 6 - 225292.652 - - 1s H 0 0 228999.49598 225292.652 1.62% - 1s 0 2 225292.652 0 6 228999.496 225292.652 1.62% - 1s * 11 4 11 225915.15199 225907.011 0.00% 79.8 2s Cutting planes: Flow cover: 7 Explored 12 nodes (5264 simplex iterations) in 2.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.259151519913e+05, best bound 2.259070110937e+05, gap 0.0036%