Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:46:47 2013 Optimize a model with 2200 rows, 101700 columns and 207600 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.27s Presolved: 2100 rows, 101600 columns, 206500 nonzeros Variable types: 101200 continuous, 400 integer (400 binary) Root relaxation: objective 7.543716e+05, 5737 iterations, 0.47 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 12 - 754371.571 - - 0s H 0 0 846215.37606 754371.571 10.9% - 1s 0 0 754450.794 0 12 846215.376 754450.794 10.8% - 1s 0 0 754486.964 0 9 846215.376 754486.964 10.8% - 2s H 0 0 757344.98223 754486.964 0.38% - 2s 0 0 754510.701 0 15 757344.982 754510.701 0.37% - 2s 0 0 754519.032 0 12 757344.982 754519.032 0.37% - 3s 0 0 754519.680 0 12 757344.982 754519.680 0.37% - 3s 0 0 754520.291 0 12 757344.982 754520.291 0.37% - 4s 0 0 754524.236 0 12 757344.982 754524.236 0.37% - 4s 0 0 754524.236 0 12 757344.982 754524.236 0.37% - 4s 0 0 754527.204 0 12 757344.982 754527.204 0.37% - 5s 0 0 754527.277 0 12 757344.982 754527.277 0.37% - 5s 0 0 754529.517 0 12 757344.982 754529.517 0.37% - 6s 0 0 754529.517 0 12 757344.982 754529.517 0.37% - 7s H 0 0 757290.12120 754529.517 0.36% - 8s 0 2 754529.517 0 12 757290.121 754529.517 0.36% - 8s 6 7 754849.118 6 3 757290.121 754672.992 0.35% 167 10s H 27 12 755707.46733 754672.992 0.14% 78.8 13s * 31 11 28 755679.58081 754672.992 0.13% 69.5 13s 53 26 755469.562 20 3 755679.581 754787.835 0.12% 61.8 15s 124 1 cutoff 6 755679.581 755636.703 0.01% 65.3 20s Cutting planes: Flow cover: 35 Explored 125 nodes (16809 simplex iterations) in 20.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556795808113e+05, best bound 7.556367027981e+05, gap 0.0057%