Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:37:01 2013 Optimize a model with 671 rows, 37271 columns and 74481 nonzeros Presolve time: 0.05s Presolved: 671 rows, 37271 columns, 74481 nonzeros Variable types: 37210 continuous, 61 integer (61 binary) Root relaxation: objective 6.110033e+04, 1355 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61100.3316 0 8 - 61100.3316 - - 0s H 0 0 64783.000000 61100.3316 5.68% - 0s H 0 0 61821.000000 61100.3316 1.17% - 0s 0 0 61297.1525 0 4 61821.0000 61297.1525 0.85% - 0s 0 0 61316.3050 0 3 61821.0000 61316.3050 0.82% - 0s 0 0 61319.3535 0 4 61821.0000 61319.3535 0.81% - 0s 0 0 61322.3317 0 4 61821.0000 61322.3317 0.81% - 0s 0 0 61323.1933 0 4 61821.0000 61323.1933 0.81% - 0s 0 0 61323.3294 0 4 61821.0000 61323.3294 0.81% - 0s 0 0 61323.3294 0 4 61821.0000 61323.3294 0.81% - 0s H 0 0 61434.000000 61323.3294 0.18% - 0s 0 0 61323.3294 0 6 61434.0000 61323.3294 0.18% - 0s 0 0 61357.2456 0 3 61434.0000 61357.2456 0.12% - 0s 0 0 61376.2069 0 2 61434.0000 61376.2069 0.09% - 0s 0 0 61378.0455 0 2 61434.0000 61378.0455 0.09% - 0s 0 0 61380.0269 0 2 61434.0000 61380.0269 0.09% - 1s 0 0 61380.0269 0 2 61434.0000 61380.0269 0.09% - 1s 0 0 61380.9703 0 3 61434.0000 61380.9703 0.09% - 1s 0 0 61381.6507 0 3 61434.0000 61381.6507 0.09% - 1s 0 0 61381.6507 0 3 61434.0000 61381.6507 0.09% - 1s 0 0 61384.4091 0 1 61434.0000 61384.4091 0.08% - 1s 0 2 61385.0000 0 1 61434.0000 61385.0000 0.08% - 1s * 4 1 3 61425.000000 61397.0906 0.05% 25.8 1s Cutting planes: Implied bound: 41 Flow cover: 1 Explored 7 nodes (3157 simplex iterations) in 1.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.142500000000e+04, best bound 6.142500000000e+04, gap 0.0%