Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:19:10 2013 Optimize a model with 2400 rows, 107100 columns and 233100 nonzeros Presolve removed 100 rows and 2500 columns Presolve time: 0.31s Presolved: 2300 rows, 104600 columns, 229100 nonzeros Variable types: 104100 continuous, 500 integer (500 binary) Root relaxation: objective 9.481640e+05, 5447 iterations, 0.45 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 948163.962 0 12 - 948163.962 - - 0s 0 0 948321.135 0 12 - 948321.135 - - 1s 0 0 948359.808 0 12 - 948359.808 - - 1s 0 0 948366.436 0 12 - 948366.436 - - 1s 0 0 948372.757 0 12 - 948372.757 - - 2s 0 0 948377.341 0 12 - 948377.341 - - 2s 0 0 948378.273 0 12 - 948378.273 - - 2s 0 0 948379.645 0 12 - 948379.645 - - 3s 0 0 948379.645 0 12 - 948379.645 - - 3s 0 0 948380.248 0 12 - 948380.248 - - 3s 0 0 948380.309 0 12 - 948380.309 - - 4s 0 0 948380.309 0 12 - 948380.309 - - 5s H 0 0 983075.33122 948380.309 3.53% - 5s 0 2 948380.741 0 12 983075.331 948380.741 3.53% - 6s 21 23 949775.191 18 3 983075.331 948481.766 3.52% 116 10s H 27 24 953296.75246 948481.766 0.51% 94.6 11s * 51 27 45 950554.24931 948481.766 0.22% 61.5 14s 54 28 948642.607 2 6 950554.249 948592.467 0.21% 66.1 15s 84 34 949970.497 6 5 950554.249 948835.514 0.18% 107 20s * 119 32 29 950276.23626 949324.965 0.10% 109 23s 136 25 950263.773 15 2 950276.236 949571.074 0.07% 111 25s 225 40 950146.852 17 3 950276.236 949696.669 0.06% 74.4 30s Cutting planes: Flow cover: 22 Explored 349 nodes (25984 simplex iterations) in 33.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.502762362556e+05, best bound 9.501818943297e+05, gap 0.0099%