Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:25:52 2013 Optimize a model with 968 rows, 77528 columns and 154968 nonzeros Presolve time: 0.13s Presolved: 968 rows, 77528 columns, 154968 nonzeros Variable types: 77440 continuous, 88 integer (88 binary) Root relaxation: objective 1.062716e+05, 3012 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 106271.561 0 8 - 106271.561 - - 0s H 0 0 111665.00000 106271.561 4.83% - 0s H 0 0 107202.00000 106271.561 0.87% - 0s 0 0 106550.489 0 5 107202.000 106550.489 0.61% - 0s 0 0 106550.489 0 8 107202.000 106550.489 0.61% - 1s 0 0 106552.997 0 5 107202.000 106552.997 0.61% - 1s 0 0 106571.531 0 6 107202.000 106571.531 0.59% - 1s 0 0 106578.570 0 5 107202.000 106578.570 0.58% - 1s 0 0 106579.335 0 4 107202.000 106579.335 0.58% - 1s 0 0 106579.540 0 4 107202.000 106579.540 0.58% - 1s 0 2 106593.082 0 4 107202.000 106593.082 0.57% - 2s H 7 5 107168.00000 106641.186 0.49% 94.0 2s * 16 6 12 107156.00000 106641.186 0.48% 59.6 2s * 31 9 15 106860.00000 106648.966 0.20% 47.8 2s * 49 3 10 106846.00000 106747.557 0.09% 47.1 3s Cutting planes: Implied bound: 175 Flow cover: 4 Explored 53 nodes (8868 simplex iterations) in 3.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.068460000000e+05, best bound 1.068460000000e+05, gap 0.0%