Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:23:07 2013 Optimize a model with 1870 rows, 289170 columns and 578170 nonzeros Presolve time: 1.02s Presolved: 1870 rows, 289170 columns, 578170 nonzeros Variable types: 289000 continuous, 170 integer (170 binary) Root relaxation: objective 2.612584e+05, 10530 iterations, 1.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 261258.423 0 4 - 261258.423 - - 2s H 0 0 272546.00000 261258.423 4.14% - 3s H 0 0 262616.00000 261258.423 0.52% - 3s 0 0 261316.780 0 5 262616.000 261316.780 0.49% - 4s 0 0 261316.780 0 4 262616.000 261316.780 0.49% - 5s 0 0 261317.278 0 5 262616.000 261317.278 0.49% - 6s 0 0 261328.931 0 4 262616.000 261328.931 0.49% - 6s 0 0 261329.930 0 4 262616.000 261329.930 0.49% - 6s 0 0 261331.270 0 3 262616.000 261331.270 0.49% - 6s 0 0 261331.309 0 4 262616.000 261331.309 0.49% - 7s 0 0 261331.309 0 4 262616.000 261331.309 0.49% - 7s 0 0 261331.309 0 4 262616.000 261331.309 0.49% - 7s 0 0 261331.309 0 4 262616.000 261331.309 0.49% - 8s 0 2 261350.104 0 4 262616.000 261350.104 0.48% - 9s 6 7 261526.529 6 3 262616.000 261426.385 0.45% 105 10s H 7 6 262614.00000 261426.385 0.45% 89.7 10s H 8 6 261631.00000 261426.385 0.08% 81.6 10s H 10 6 261607.00000 261426.385 0.07% 70.1 10s * 14 4 13 261569.00000 261426.385 0.05% 54.5 10s Cutting planes: Implied bound: 85 Flow cover: 4 Explored 17 nodes (17453 simplex iterations) in 10.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.615690000000e+05, best bound 2.615456000000e+05, gap 0.0089%