Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:44:34 2013 Optimize a model with 693 rows, 39753 columns and 79443 nonzeros Presolve time: 0.06s Presolved: 693 rows, 39753 columns, 79443 nonzeros Variable types: 39690 continuous, 63 integer (63 binary) Root relaxation: objective 7.692720e+04, 1740 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 76927.1998 0 6 - 76927.1998 - - 0s H 0 0 78518.000000 76927.1998 2.03% - 0s 0 0 77010.6000 0 1 78518.0000 77010.6000 1.92% - 0s H 0 0 77586.266667 77010.6000 0.74% - 0s H 0 0 77243.000000 77010.6000 0.30% - 0s 0 0 77010.6000 0 6 77243.0000 77010.6000 0.30% - 0s H 0 0 77221.000000 77010.6000 0.27% - 0s 0 0 77010.6000 0 1 77221.0000 77010.6000 0.27% - 0s 0 0 77010.6000 0 1 77221.0000 77010.6000 0.27% - 0s 0 2 77011.2696 0 1 77221.0000 77011.2696 0.27% - 0s H 4 3 77155.789474 77022.5263 0.17% 17.8 0s * 12 5 9 77133.000000 77027.2784 0.14% 28.8 0s H 27 6 77091.000000 77043.8000 0.06% 29.9 1s Cutting planes: Implied bound: 69 Flow cover: 1 Explored 33 nodes (4011 simplex iterations) in 1.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.709100000000e+04, best bound 7.709100000000e+04, gap 0.0%