Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:27 2013 Optimize a model with 418 rows, 14478 columns and 28918 nonzeros Presolve time: 0.02s Presolved: 418 rows, 14478 columns, 28918 nonzeros Variable types: 14440 continuous, 38 integer (38 binary) Root relaxation: objective 3.709746e+04, 540 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37097.4576 0 5 - 37097.4576 - - 0s H 0 0 38665.000000 37097.4576 4.05% - 0s H 0 0 37950.000000 37097.4576 2.25% - 0s 0 0 37448.2536 0 6 37950.0000 37448.2536 1.32% - 0s H 0 0 37626.000000 37448.2536 0.47% - 0s 0 0 37467.5503 0 6 37626.0000 37467.5503 0.42% - 0s 0 0 37469.4472 0 2 37626.0000 37469.4472 0.42% - 0s 0 0 37470.5371 0 5 37626.0000 37470.5371 0.41% - 0s 0 0 37471.1418 0 2 37626.0000 37471.1418 0.41% - 0s 0 0 37471.1457 0 4 37626.0000 37471.1457 0.41% - 0s 0 0 37527.3061 0 6 37626.0000 37527.3061 0.26% - 0s 0 0 37551.1588 0 7 37626.0000 37551.1588 0.20% - 0s 0 0 37551.1588 0 7 37626.0000 37551.1588 0.20% - 0s 0 0 37559.0106 0 6 37626.0000 37559.0106 0.18% - 0s 0 0 37581.5628 0 6 37626.0000 37581.5628 0.12% - 0s 0 0 37593.5361 0 4 37626.0000 37593.5361 0.09% - 0s 0 0 37595.3514 0 2 37626.0000 37595.3514 0.08% - 0s H 0 0 37613.000000 37595.3514 0.05% - 0s 0 2 37598.0000 0 2 37613.0000 37598.0000 0.04% - 0s Cutting planes: Implied bound: 53 Flow cover: 3 Explored 4 nodes (1337 simplex iterations) in 0.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.761300000000e+04, best bound 3.761000000000e+04, gap 0.0080%