Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:46:43 2013 Optimize a model with 2310 rows, 441210 columns and 882210 nonzeros Presolve time: 1.42s Presolved: 2310 rows, 441210 columns, 882210 nonzeros Variable types: 441000 continuous, 210 integer (210 binary) Root relaxation: objective 4.330847e+05, 14363 iterations, 1.88 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 433084.749 0 9 - 433084.749 - - 3s H 0 0 471964.00000 433084.749 8.24% - 5s H 0 0 433685.00000 433084.749 0.14% - 6s 0 0 433230.106 0 5 433685.000 433230.106 0.10% - 7s 0 0 433230.106 0 9 433685.000 433230.106 0.10% - 9s 0 0 433230.106 0 5 433685.000 433230.106 0.10% - 10s 0 0 433231.977 0 6 433685.000 433231.977 0.10% - 10s 0 0 433234.633 0 4 433685.000 433234.633 0.10% - 11s 0 0 433235.729 0 3 433685.000 433235.729 0.10% - 11s 0 0 433235.729 0 3 433685.000 433235.729 0.10% - 11s 0 0 433235.729 0 3 433685.000 433235.729 0.10% - 11s 0 0 433235.729 0 3 433685.000 433235.729 0.10% - 12s 0 0 433235.729 0 3 433685.000 433235.729 0.10% - 12s 0 2 433239.005 0 3 433685.000 433239.005 0.10% - 13s H 10 10 433559.00000 433247.211 0.07% 29.0 14s 12 11 433513.159 12 1 433559.000 433247.211 0.07% 37.3 15s * 15 9 12 433523.00000 433247.211 0.06% 47.1 15s Cutting planes: Implied bound: 206 Flow cover: 10 Explored 42 nodes (27503 simplex iterations) in 19.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.335230000000e+05, best bound 4.335230000000e+05, gap 0.0%