Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:20:36 2013 Optimize a model with 605 rows, 30305 columns and 60555 nonzeros Presolve time: 0.04s Presolved: 605 rows, 30305 columns, 60555 nonzeros Variable types: 30250 continuous, 55 integer (55 binary) Root relaxation: objective 6.524621e+04, 1279 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 65246.2149 0 7 - 65246.2149 - - 0s H 0 0 67062.000000 65246.2149 2.71% - 0s H 0 0 66205.000000 65246.2149 1.45% - 0s 0 0 65820.0331 0 5 66205.0000 65820.0331 0.58% - 0s 0 0 65831.4078 0 6 66205.0000 65831.4078 0.56% - 0s 0 0 65831.4078 0 7 66205.0000 65831.4078 0.56% - 0s 0 0 65831.4078 0 5 66205.0000 65831.4078 0.56% - 0s 0 0 65831.4078 0 6 66205.0000 65831.4078 0.56% - 0s 0 0 65837.8330 0 4 66205.0000 65837.8330 0.55% - 0s 0 0 65837.8330 0 4 66205.0000 65837.8330 0.55% - 0s 0 0 65837.8860 0 4 66205.0000 65837.8860 0.55% - 0s H 0 0 65954.000000 65837.8860 0.18% - 0s 0 2 65900.1786 0 3 65954.0000 65900.1786 0.08% - 0s Cutting planes: Implied bound: 120 Flow cover: 7 Explored 5 nodes (3397 simplex iterations) in 0.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.595400000000e+04, best bound 6.595400000000e+04, gap 0.0%