Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:12:26 2013 Optimize a model with 561 rows, 26061 columns and 52071 nonzeros Presolve time: 0.04s Presolved: 561 rows, 26061 columns, 52071 nonzeros Variable types: 26010 continuous, 51 integer (51 binary) Root relaxation: objective 4.439720e+04, 858 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44397.2013 0 4 - 44397.2013 - - 0s H 0 0 45368.000000 44397.2013 2.14% - 0s 0 0 44706.5302 0 5 45368.0000 44706.5302 1.46% - 0s H 0 0 45286.000000 44706.5302 1.28% - 0s 0 0 44738.9346 0 6 45286.0000 44738.9346 1.21% - 0s 0 0 44740.4308 0 4 45286.0000 44740.4308 1.20% - 0s 0 0 44742.0863 0 3 45286.0000 44742.0863 1.20% - 0s 0 0 44742.0863 0 3 45286.0000 44742.0863 1.20% - 0s H 0 0 44833.000000 44742.0863 0.20% - 0s 0 0 44742.0863 0 4 44833.0000 44742.0863 0.20% - 0s 0 0 44742.0863 0 3 44833.0000 44742.0863 0.20% - 0s 0 0 44750.5558 0 4 44833.0000 44750.5558 0.18% - 0s 0 0 44754.3248 0 3 44833.0000 44754.3248 0.18% - 0s 0 0 44754.3608 0 3 44833.0000 44754.3608 0.18% - 0s 0 0 44754.5015 0 2 44833.0000 44754.5015 0.18% - 0s 0 0 44754.5015 0 2 44833.0000 44754.5015 0.18% - 0s 0 0 44754.5015 0 2 44833.0000 44754.5015 0.18% - 0s 0 0 44782.8534 0 4 44833.0000 44782.8534 0.11% - 0s 0 0 44788.0666 0 3 44833.0000 44788.0666 0.10% - 0s 0 0 44790.5604 0 2 44833.0000 44790.5604 0.09% - 0s 0 2 44791.8235 0 2 44833.0000 44791.8235 0.09% - 0s Cutting planes: Implied bound: 36 Flow cover: 2 Explored 5 nodes (1880 simplex iterations) in 0.82 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.483300000000e+04, best bound 4.483300000000e+04, gap 0.0%