Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:28:01 2013 Optimize a model with 2400 rows, 103200 columns and 208100 nonzeros Presolve removed 200 rows and 300 columns Presolve time: 0.41s Presolved: 2200 rows, 102900 columns, 205800 nonzeros Variable types: 102000 continuous, 900 integer (900 binary) Root relaxation: objective 7.543716e+05, 8579 iterations, 0.61 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 4 - 754371.571 - - 1s H 0 0 846215.37606 754371.571 10.9% - 1s 0 0 754454.564 0 3 846215.376 754454.564 10.8% - 1s 0 0 754494.217 0 5 846215.376 754494.217 10.8% - 1s 0 0 754510.150 0 4 846215.376 754510.150 10.8% - 2s 0 0 754514.683 0 4 846215.376 754514.683 10.8% - 2s 0 0 754519.356 0 4 846215.376 754519.356 10.8% - 2s 0 0 754527.608 0 4 846215.376 754527.608 10.8% - 3s 0 0 754529.731 0 4 846215.376 754529.731 10.8% - 3s 0 0 754529.731 0 4 846215.376 754529.731 10.8% - 4s 0 0 754529.752 0 4 846215.376 754529.752 10.8% - 4s 0 0 754529.916 0 4 846215.376 754529.916 10.8% - 5s 0 0 754529.916 0 4 846215.376 754529.916 10.8% - 6s 0 2 754543.828 0 4 846215.376 754543.828 10.8% - 7s 13 15 754975.036 12 1 846215.376 754793.427 10.8% 81.1 10s H 27 23 759977.59202 754793.427 0.68% 63.3 13s 33 28 755490.998 32 2 759977.592 754793.427 0.68% 64.1 15s * 46 11 45 755679.58081 754793.427 0.12% 57.9 17s 70 14 755235.506 24 1 755679.581 754825.838 0.11% 62.1 20s 138 17 755038.659 3 1 755679.581 754949.477 0.10% 40.8 25s 179 21 755598.968 4 1 755679.581 755103.692 0.08% 50.6 30s Cutting planes: Flow cover: 42 Explored 212 nodes (21765 simplex iterations) in 33.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556795808113e+05, best bound 7.556051263542e+05, gap 0.0099%