Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:07:57 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 7.306028e+04, 1768 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 73060.2811 0 7 - 73060.2811 - - 0s H 0 0 75458.000000 73060.2811 3.18% - 0s H 0 0 73904.000000 73060.2811 1.14% - 0s 0 0 73427.1933 0 6 73904.0000 73427.1933 0.65% - 0s 0 0 73460.9664 0 6 73904.0000 73460.9664 0.60% - 0s 0 0 73466.2034 0 5 73904.0000 73466.2034 0.59% - 0s 0 0 73466.5558 0 5 73904.0000 73466.5558 0.59% - 0s 0 0 73467.4787 0 4 73904.0000 73467.4787 0.59% - 0s 0 0 73468.4935 0 4 73904.0000 73468.4935 0.59% - 0s 0 0 73470.5942 0 5 73904.0000 73470.5942 0.59% - 0s 0 0 73471.3856 0 5 73904.0000 73471.3856 0.59% - 0s 0 0 73473.8221 0 4 73904.0000 73473.8221 0.58% - 0s 0 0 73473.8397 0 4 73904.0000 73473.8397 0.58% - 0s 0 0 73473.8397 0 4 73904.0000 73473.8397 0.58% - 1s 0 0 73473.8715 0 4 73904.0000 73473.8715 0.58% - 1s H 0 0 73570.000000 73473.8715 0.13% - 1s 0 0 73473.8715 0 6 73570.0000 73473.8715 0.13% - 1s 0 0 73473.8715 0 5 73570.0000 73473.8715 0.13% - 1s 0 0 73478.0250 0 5 73570.0000 73478.0250 0.13% - 1s 0 0 73480.5170 0 4 73570.0000 73480.5170 0.12% - 1s 0 0 73485.3973 0 5 73570.0000 73485.3973 0.11% - 1s 0 0 73486.1983 0 4 73570.0000 73486.1983 0.11% - 1s 0 0 73486.9894 0 3 73570.0000 73486.9894 0.11% - 1s 0 0 73486.9894 0 3 73570.0000 73486.9894 0.11% - 1s 0 0 73486.9894 0 3 73570.0000 73486.9894 0.11% - 1s 0 0 73487.5681 0 3 73570.0000 73487.5681 0.11% - 1s 0 0 73490.3028 0 3 73570.0000 73490.3028 0.11% - 1s 0 0 73491.4444 0 2 73570.0000 73491.4444 0.11% - 1s H 0 0 73539.000000 73491.4444 0.06% - 2s H 0 0 73526.000000 73491.4444 0.05% - 2s 0 0 73526.0000 0 1 73526.0000 73526.0000 0.0% - 2s Cutting planes: Implied bound: 72 Flow cover: 4 Explored 1 nodes (3520 simplex iterations) in 2.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.352600000000e+04, best bound 7.352600000000e+04, gap 0.0%