Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:31 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 3.863442e+04, 645 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38634.4203 0 7 - 38634.4203 - - 0s H 0 0 40502.000000 38634.4203 4.61% - 0s 0 0 38801.2553 0 8 40502.0000 38801.2553 4.20% - 0s H 0 0 39799.000000 38801.2553 2.51% - 0s 0 0 38862.7415 0 3 39799.0000 38862.7415 2.35% - 0s H 0 0 39746.833333 38862.7415 2.22% - 0s H 0 0 39054.000000 38862.7415 0.49% - 0s 0 0 38876.3917 0 4 39054.0000 38876.3917 0.45% - 0s 0 0 38877.0906 0 3 39054.0000 38877.0906 0.45% - 0s 0 0 38880.2714 0 3 39054.0000 38880.2714 0.44% - 0s 0 0 38880.2714 0 3 39054.0000 38880.2714 0.44% - 0s 0 0 38881.1262 0 3 39054.0000 38881.1262 0.44% - 0s H 0 0 38938.000000 38881.1262 0.15% - 0s 0 0 38881.1262 0 5 38938.0000 38881.1262 0.15% - 0s 0 0 38881.1262 0 4 38938.0000 38881.1262 0.15% - 0s 0 0 38881.1262 0 6 38938.0000 38881.1262 0.15% - 0s 0 0 38883.2180 0 3 38938.0000 38883.2180 0.14% - 0s 0 0 38884.0214 0 2 38938.0000 38884.0214 0.14% - 0s 0 0 38884.0214 0 2 38938.0000 38884.0214 0.14% - 0s 0 0 38895.6981 0 4 38938.0000 38895.6981 0.11% - 0s 0 0 38895.7143 0 1 38938.0000 38895.7143 0.11% - 0s 0 2 38898.1538 0 1 38938.0000 38898.1538 0.10% - 0s * 4 0 2 38908.000000 38908.0000 0.0% 24.5 0s Cutting planes: Implied bound: 56 Flow cover: 2 Explored 5 nodes (1819 simplex iterations) in 0.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.890800000000e+04, best bound 3.890800000000e+04, gap 0.0%