Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:25 2013 Optimize a model with 264 rows, 5784 columns and 11544 nonzeros Presolve time: 0.01s Presolved: 264 rows, 5784 columns, 11544 nonzeros Variable types: 5760 continuous, 24 integer (24 binary) Root relaxation: objective 1.849953e+04, 223 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18499.5321 0 5 - 18499.5321 - - 0s H 0 0 18787.000000 18499.5321 1.53% - 0s 0 0 18651.7662 0 2 18787.0000 18651.7662 0.72% - 0s H 0 0 18683.000000 18651.7662 0.17% - 0s 0 0 18654.5926 0 1 18683.0000 18654.5926 0.15% - 0s 0 0 18654.5926 0 1 18683.0000 18654.5926 0.15% - 0s 0 0 18654.5926 0 1 18683.0000 18654.5926 0.15% - 0s 0 0 18654.6531 0 1 18683.0000 18654.6531 0.15% - 0s 0 2 18656.3881 0 1 18683.0000 18656.3881 0.14% - 0s * 2 0 1 18660.000000 18660.0000 0.0% 1.5 0s Cutting planes: Implied bound: 22 Flow cover: 1 Explored 3 nodes (290 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.866000000000e+04, best bound 1.866000000000e+04, gap 0.0%