Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:18:02 2013 Optimize a model with 1100 rows, 26900 columns and 57450 nonzeros Presolve removed 50 rows and 650 columns Presolve time: 0.08s Presolved: 1050 rows, 26250 columns, 56450 nonzeros Variable types: 26050 continuous, 200 integer (200 binary) Root relaxation: objective 2.208160e+05, 1781 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 8 - 220815.985 - - 0s 0 0 220896.231 0 6 - 220896.231 - - 0s 0 0 220928.805 0 8 - 220928.805 - - 0s 0 0 220934.185 0 6 - 220934.185 - - 0s 0 0 220942.298 0 8 - 220942.298 - - 0s 0 0 220943.649 0 8 - 220943.649 - - 0s 0 0 220950.887 0 8 - 220950.887 - - 0s 0 0 220951.096 0 8 - 220951.096 - - 0s 0 0 220951.682 0 6 - 220951.682 - - 0s 0 0 220954.965 0 6 - 220954.965 - - 0s 0 0 220955.914 0 8 - 220955.914 - - 0s 0 0 220956.829 0 8 - 220956.829 - - 0s 0 0 220956.871 0 8 - 220956.871 - - 0s 0 0 220956.871 0 8 - 220956.871 - - 0s 0 0 220956.871 0 8 - 220956.871 - - 0s H 0 0 236050.11836 220956.871 6.39% - 1s 0 2 220958.805 0 8 236050.118 220958.805 6.39% - 1s H 27 16 221985.63641 221135.807 0.38% 27.6 1s * 65 21 9 221926.77343 221196.700 0.33% 27.7 2s * 76 9 13 221476.77211 221226.452 0.11% 27.2 2s * 88 0 15 221475.77318 221475.773 0.0% 28.0 2s Cutting planes: Flow cover: 20 Explored 89 nodes (5075 simplex iterations) in 2.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214757731774e+05, best bound 2.214757731774e+05, gap 0.0%