Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:27:51 2013 Optimize a model with 638 rows, 33698 columns and 67338 nonzeros Presolve time: 0.05s Presolved: 638 rows, 33698 columns, 67338 nonzeros Variable types: 33640 continuous, 58 integer (58 binary) Root relaxation: objective 6.695361e+04, 1782 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66953.6070 0 6 - 66953.6070 - - 0s H 0 0 71157.000000 66953.6070 5.91% - 0s 0 0 67188.1232 0 4 71157.0000 67188.1232 5.58% - 0s 0 0 67216.2040 0 4 71157.0000 67216.2040 5.54% - 0s H 0 0 70663.000000 67216.2040 4.88% - 0s 0 0 67216.6198 0 4 70663.0000 67216.6198 4.88% - 0s H 0 0 70651.000000 67216.6198 4.86% - 0s 0 0 67216.9730 0 4 70651.0000 67216.9730 4.86% - 0s H 0 0 70536.000000 67216.9730 4.71% - 0s 0 0 67224.4610 0 4 70536.0000 67224.4610 4.69% - 0s 0 0 67224.4610 0 4 70536.0000 67224.4610 4.69% - 0s 0 0 67224.4610 0 4 70536.0000 67224.4610 4.69% - 0s 0 0 67225.5082 0 4 70536.0000 67225.5082 4.69% - 0s 0 0 67227.3210 0 4 70536.0000 67227.3210 4.69% - 0s 0 0 67227.3210 0 4 70536.0000 67227.3210 4.69% - 0s 0 0 67227.3210 0 4 70536.0000 67227.3210 4.69% - 0s H 0 0 67548.000000 67227.3210 0.47% - 1s 0 0 67227.3210 0 5 67548.0000 67227.3210 0.47% - 1s 0 0 67227.3210 0 4 67548.0000 67227.3210 0.47% - 1s 0 0 67235.0066 0 4 67548.0000 67235.0066 0.46% - 1s 0 0 67238.0957 0 4 67548.0000 67238.0957 0.46% - 1s 0 0 67238.1621 0 4 67548.0000 67238.1621 0.46% - 1s 0 0 67238.1621 0 4 67548.0000 67238.1621 0.46% - 1s 0 0 67238.1621 0 4 67548.0000 67238.1621 0.46% - 1s 0 2 67269.7595 0 4 67548.0000 67269.7595 0.41% - 1s * 7 4 6 67527.000000 67410.7461 0.17% 65.3 1s Cutting planes: Implied bound: 63 Flow cover: 13 Explored 23 nodes (4706 simplex iterations) in 1.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.752700000000e+04, best bound 6.752700000000e+04, gap 0.0%