Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:49 2013 Optimize a model with 385 rows, 12285 columns and 24535 nonzeros Presolve time: 0.02s Presolved: 385 rows, 12285 columns, 24535 nonzeros Variable types: 12250 continuous, 35 integer (35 binary) Root relaxation: objective 3.705656e+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 37056.5636 0 5 - 37056.5636 - - 0s H 0 0 38005.000000 37056.5636 2.50% - 0s 0 0 37290.1466 0 5 38005.0000 37290.1466 1.88% - 0s 0 0 37309.7446 0 4 38005.0000 37309.7446 1.83% - 0s H 0 0 37449.000000 37309.7446 0.37% - 0s 0 0 37312.2070 0 4 37449.0000 37312.2070 0.37% - 0s 0 0 37312.8987 0 4 37449.0000 37312.8987 0.36% - 0s 0 0 37314.3376 0 4 37449.0000 37314.3376 0.36% - 0s 0 0 37315.6199 0 4 37449.0000 37315.6199 0.36% - 0s 0 0 37315.6199 0 4 37449.0000 37315.6199 0.36% - 0s 0 0 37315.6199 0 4 37449.0000 37315.6199 0.36% - 0s 0 2 37326.1122 0 4 37449.0000 37326.1122 0.33% - 0s Cutting planes: Implied bound: 54 Flow cover: 6 Explored 5 nodes (959 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.744900000000e+04, best bound 3.744900000000e+04, gap 0.0%