Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:56 2013 Optimize a model with 440 rows, 16040 columns and 32040 nonzeros Presolve time: 0.02s Presolved: 440 rows, 16040 columns, 32040 nonzeros Variable types: 16000 continuous, 40 integer (40 binary) Root relaxation: objective 4.322426e+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 43224.2607 0 10 - 43224.2607 - - 0s H 0 0 44613.000000 43224.2607 3.11% - 0s H 0 0 44083.000000 43224.2607 1.95% - 0s 0 0 43670.0260 0 3 44083.0000 43670.0260 0.94% - 0s H 0 0 43737.000000 43670.0260 0.15% - 0s 0 0 43678.5128 0 1 43737.0000 43678.5128 0.13% - 0s H 0 0 43726.000000 43678.5128 0.11% - 0s 0 0 43679.8952 0 3 43726.0000 43679.8952 0.11% - 0s 0 0 43681.0769 0 1 43726.0000 43681.0769 0.10% - 0s 0 0 43681.3714 0 2 43726.0000 43681.3714 0.10% - 0s 0 0 43681.3846 0 1 43726.0000 43681.3846 0.10% - 0s 0 0 43681.3846 0 1 43726.0000 43681.3846 0.10% - 0s * 0 0 0 43682.000000 43682.0000 0.0% - 0s Cutting planes: Implied bound: 48 Flow cover: 1 Explored 0 nodes (805 simplex iterations) in 0.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.368200000000e+04, best bound 4.368200000000e+04, gap 0.0%