Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:46 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 3.839202e+04, 500 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38392.0210 0 7 - 38392.0210 - - 0s H 0 0 39958.000000 38392.0210 3.92% - 0s H 0 0 39588.000000 38392.0210 3.02% - 0s 0 0 38781.6050 0 4 39588.0000 38781.6050 2.04% - 0s H 0 0 39517.000000 38781.6050 1.86% - 0s 0 0 38798.6261 0 4 39517.0000 38798.6261 1.82% - 0s H 0 0 39408.000000 38798.6261 1.55% - 0s 0 0 38801.6198 0 4 39408.0000 38801.6198 1.54% - 0s 0 0 38807.3214 0 5 39408.0000 38807.3214 1.52% - 0s H 0 0 39014.000000 38807.3214 0.53% - 0s 0 0 38808.2855 0 5 39014.0000 38808.2855 0.53% - 0s H 0 0 38976.000000 38808.2855 0.43% - 0s 0 0 38808.9225 0 4 38976.0000 38808.9225 0.43% - 0s 0 0 38808.9312 0 4 38976.0000 38808.9312 0.43% - 0s 0 0 38809.1153 0 4 38976.0000 38809.1153 0.43% - 0s 0 0 38809.3960 0 3 38976.0000 38809.3960 0.43% - 0s 0 0 38809.4182 0 3 38976.0000 38809.4182 0.43% - 0s H 0 0 38812.000000 38809.4182 0.01% - 0s Cutting planes: Implied bound: 33 Flow cover: 6 Explored 0 nodes (619 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.881200000000e+04, best bound 3.880941818182e+04, gap 0.0067%