Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:49:55 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 3.839329e+04, 462 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38393.2919 0 8 - 38393.2919 - - 0s 0 0 38396.3100 0 8 - 38396.3100 - - 0s 0 0 38396.8171 0 7 - 38396.8171 - - 0s 0 0 38398.5499 0 8 - 38398.5499 - - 0s 0 0 38399.0789 0 8 - 38399.0789 - - 0s 0 0 38399.1381 0 8 - 38399.1381 - - 0s 0 0 38399.5866 0 12 - 38399.5866 - - 0s 0 0 38400.0179 0 12 - 38400.0179 - - 0s 0 0 38400.3409 0 8 - 38400.3409 - - 0s 0 0 38401.1145 0 12 - 38401.1145 - - 0s 0 0 38402.1035 0 11 - 38402.1035 - - 0s 0 0 38402.6778 0 15 - 38402.6778 - - 0s 0 0 38402.8869 0 12 - 38402.8869 - - 0s 0 0 38403.0225 0 11 - 38403.0225 - - 0s 0 0 38403.3252 0 15 - 38403.3252 - - 0s 0 0 38403.5345 0 15 - 38403.5345 - - 0s 0 0 38403.5345 0 15 - 38403.5345 - - 0s H 0 0 42281.134610 38403.5345 9.17% - 1s 0 2 38403.7967 0 15 42281.1346 38403.7967 9.17% - 1s * 33 16 30 38638.424823 38514.9107 0.32% 8.5 1s * 43 8 14 38634.717943 38631.2484 0.01% 7.2 1s Cutting planes: Flow cover: 9 Explored 44 nodes (1031 simplex iterations) in 1.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.863471794296e+04, best bound 3.863124844249e+04, gap 0.0090%