Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:30:14 2013 Optimize a model with 35459 rows, 34869 columns and 139299 nonzeros Presolve removed 1725 rows and 0 columns Presolve time: 0.21s Presolved: 33734 rows, 34869 columns, 135849 nonzeros Variable types: 34810 continuous, 59 integer (59 binary) Root relaxation: objective 6.315106e+04, 6304 iterations, 0.82 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 63151.0608 0 2 - 63151.0608 - - 1s H 0 0 63871.000000 63151.0608 1.13% - 1s 0 0 63151.2872 0 3 63871.0000 63151.2872 1.13% - 1s 0 0 63151.2872 0 2 63871.0000 63151.2872 1.13% - 3s 0 0 63151.2872 0 3 63871.0000 63151.2872 1.13% - 3s 0 2 63159.0968 0 3 63871.0000 63159.0968 1.11% - 4s H 2 2 63482.000000 63209.6849 0.43% 85.0 4s H 3 3 63461.000000 63291.7455 0.27% 116 4s H 4 4 63403.090909 63291.7455 0.18% 88.0 4s H 6 6 63388.433962 63291.7455 0.15% 77.3 4s * 7 6 7 63341.000000 63291.7455 0.08% 79.0 4s 11 4 cutoff 5 63341.0000 63305.5529 0.06% 62.2 5s Cutting planes: Gomory: 1 Explored 15 nodes (11479 simplex iterations) in 5.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.334100000000e+04, best bound 6.333835013477e+04, gap 0.0042%