Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:50:02 2013 Optimize a model with 560 rows, 9300 columns and 48300 nonzeros Presolve removed 20 rows and 1140 columns Presolve time: 0.07s Presolved: 540 rows, 8160 columns, 44300 nonzeros Variable types: 8020 continuous, 140 integer (140 binary) Root relaxation: objective 3.573401e+04, 457 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35734.0139 0 12 - 35734.0139 - - 0s 0 0 35736.5488 0 12 - 35736.5488 - - 0s 0 0 35737.0372 0 12 - 35737.0372 - - 0s 0 0 35737.0715 0 12 - 35737.0715 - - 0s 0 0 35738.0932 0 12 - 35738.0932 - - 0s 0 0 35738.4203 0 12 - 35738.4203 - - 0s 0 0 35738.5269 0 12 - 35738.5269 - - 0s 0 0 35738.5682 0 12 - 35738.5682 - - 0s 0 0 35738.5682 0 12 - 35738.5682 - - 0s 0 0 35738.8054 0 12 - 35738.8054 - - 0s 0 0 35738.8054 0 12 - 35738.8054 - - 0s 0 0 35738.8054 0 12 - 35738.8054 - - 0s 0 0 35738.8054 0 12 - 35738.8054 - - 0s 0 0 35738.8054 0 12 - 35738.8054 - - 0s H 0 0 38275.900395 35738.8054 6.63% - 1s 0 2 35738.8054 0 12 38275.9004 35738.8054 6.63% - 1s * 24 15 20 36186.704546 36005.1083 0.50% 17.4 1s H 27 13 36181.823584 36005.1083 0.49% 15.8 1s * 44 12 15 36179.936545 36167.8492 0.03% 13.7 1s * 46 12 15 36179.915357 36167.8492 0.03% 13.1 1s * 55 7 13 36173.469392 36170.1956 0.01% 11.3 1s Cutting planes: Flow cover: 12 Explored 56 nodes (2014 simplex iterations) in 1.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.617346939151e+04, best bound 3.617019555443e+04, gap 0.0091%