Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:19:48 2013 Optimize a model with 1100 rows, 25850 columns and 53800 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.17s Presolved: 1050 rows, 25800 columns, 53250 nonzeros Variable types: 25600 continuous, 200 integer (200 binary) Root relaxation: objective 2.208160e+05, 1690 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 12 - 220815.985 - - 0s 0 0 220896.360 0 9 - 220896.360 - - 0s 0 0 220928.451 0 12 - 220928.451 - - 0s 0 0 220928.451 0 12 - 220928.451 - - 0s 0 0 220939.417 0 12 - 220939.417 - - 0s 0 0 220941.721 0 12 - 220941.721 - - 0s 0 0 220942.249 0 12 - 220942.249 - - 0s 0 0 220942.659 0 12 - 220942.659 - - 0s 0 0 220943.908 0 9 - 220943.908 - - 0s 0 0 220943.908 0 10 - 220943.908 - - 0s 0 0 220945.387 0 12 - 220945.387 - - 1s 0 0 220945.971 0 12 - 220945.971 - - 1s 0 0 220946.175 0 12 - 220946.175 - - 1s 0 0 220946.249 0 12 - 220946.249 - - 1s 0 0 220946.249 0 12 - 220946.249 - - 1s H 0 0 236050.11836 220946.249 6.40% - 1s 0 2 220947.798 0 12 236050.118 220947.798 6.40% - 1s H 27 10 221544.54001 221115.892 0.19% 35.9 2s * 43 9 40 221515.96527 221115.892 0.18% 23.9 2s H 54 5 221476.77211 221414.985 0.03% 29.8 2s Cutting planes: Flow cover: 16 Explored 58 nodes (4758 simplex iterations) in 2.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214767721057e+05, best bound 2.214566366067e+05, gap 0.0091%