Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:07:49 2013 Optimize a model with 748 rows, 46308 columns and 92548 nonzeros Presolve time: 0.07s Presolved: 748 rows, 46308 columns, 92548 nonzeros Variable types: 46240 continuous, 68 integer (68 binary) Root relaxation: objective 5.923845e+04, 1381 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59238.4521 0 13 - 59238.4521 - - 0s H 0 0 67698.000000 59238.4521 12.5% - 0s 0 0 59763.4765 0 10 67698.0000 59763.4765 11.7% - 0s H 0 0 67196.081511 59763.4765 11.1% - 0s H 0 0 66372.000000 59763.4765 10.0% - 0s 0 0 59811.2265 0 9 66372.0000 59811.2265 9.88% - 0s H 0 0 64944.955085 59811.2265 7.90% - 0s H 0 0 64189.000000 59811.2265 6.82% - 0s 0 0 59816.9153 0 7 64189.0000 59816.9153 6.81% - 0s H 0 0 62704.796723 59816.9153 4.61% - 0s H 0 0 61978.000000 59816.9153 3.49% - 0s 0 0 59818.3667 0 8 61978.0000 59818.3667 3.48% - 0s H 0 0 61974.000000 59818.3667 3.48% - 0s 0 0 59823.2829 0 8 61974.0000 59823.2829 3.47% - 0s 0 0 59823.3594 0 7 61974.0000 59823.3594 3.47% - 0s H 0 0 61953.000000 59823.3594 3.44% - 0s 0 0 59824.1374 0 7 61953.0000 59824.1374 3.44% - 0s 0 0 59824.8843 0 7 61953.0000 59824.8843 3.44% - 1s H 0 0 60173.000000 59824.8843 0.58% - 1s 0 0 59824.8843 0 13 60173.0000 59824.8843 0.58% - 1s 0 0 59824.8843 0 10 60173.0000 59824.8843 0.58% - 1s 0 0 59824.8843 0 9 60173.0000 59824.8843 0.58% - 1s 0 0 59824.8843 0 7 60173.0000 59824.8843 0.58% - 1s 0 0 59824.8843 0 7 60173.0000 59824.8843 0.58% - 1s 0 0 59824.8843 0 7 60173.0000 59824.8843 0.58% - 1s 0 0 59824.8843 0 7 60173.0000 59824.8843 0.58% - 1s 0 2 59833.3679 0 7 60173.0000 59833.3679 0.56% - 2s H 7 5 60016.000000 59918.6195 0.16% 32.7 2s H 8 5 60011.000000 59925.1250 0.14% 34.2 2s H 9 3 59950.000000 59927.0000 0.04% 31.6 2s * 11 3 10 59936.000000 59930.2948 0.01% 28.5 2s Cutting planes: Implied bound: 127 Flow cover: 9 Explored 12 nodes (3772 simplex iterations) in 2.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.993600000000e+04, best bound 5.993029484029e+04, gap 0.0095%