Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:28 2013 Optimize a model with 360 rows, 4140 columns and 8380 nonzeros Presolve removed 60 rows and 40 columns Presolve time: 0.01s Presolved: 300 rows, 4100 columns, 8220 nonzeros Variable types: 4080 continuous, 20 integer (20 binary) Root relaxation: objective 4.642213e+04, 473 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46422.1265 0 3 - 46422.1265 - - 0s 0 0 46452.7299 0 3 - 46452.7299 - - 0s 0 0 46461.5437 0 3 - 46461.5437 - - 0s 0 0 46461.5437 0 3 - 46461.5437 - - 0s 0 0 46461.5437 0 3 - 46461.5437 - - 0s 0 0 46461.8421 0 3 - 46461.8421 - - 0s 0 0 46461.8421 0 3 - 46461.8421 - - 0s 0 0 46462.1382 0 3 - 46462.1382 - - 0s 0 0 46462.5971 0 3 - 46462.5971 - - 0s 0 0 46462.5971 0 3 - 46462.5971 - - 0s 0 0 46462.5971 0 3 - 46462.5971 - - 0s 0 0 46462.8519 0 3 - 46462.8519 - - 0s 0 0 46463.0045 0 3 - 46463.0045 - - 0s 0 0 46463.7407 0 3 - 46463.7407 - - 0s 0 0 46463.7517 0 3 - 46463.7517 - - 0s 0 0 46463.9142 0 3 - 46463.9142 - - 0s 0 0 46463.9156 0 3 - 46463.9156 - - 0s 0 0 46464.0729 0 3 - 46464.0729 - - 0s 0 0 46464.4419 0 3 - 46464.4419 - - 0s 0 0 46464.4535 0 3 - 46464.4535 - - 0s 0 0 46464.4535 0 3 - 46464.4535 - - 0s 0 0 46464.4535 0 3 - 46464.4535 - - 0s 0 0 46464.4535 0 3 - 46464.4535 - - 0s 0 0 46464.4535 0 3 - 46464.4535 - - 0s H 0 0 46719.242149 46464.4535 0.55% - 0s 0 2 46491.6157 0 2 46719.2421 46491.6157 0.49% - 0s Cutting planes: Flow cover: 12 Explored 4 nodes (1248 simplex iterations) in 0.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.671924214897e+04, best bound 4.671677558496e+04, gap 0.0053%