Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:19:28 2013 Optimize a model with 770 rows, 49070 columns and 98070 nonzeros Presolve time: 0.07s Presolved: 770 rows, 49070 columns, 98070 nonzeros Variable types: 49000 continuous, 70 integer (70 binary) Root relaxation: objective 7.492709e+04, 1737 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 74927.0922 0 8 - 74927.0922 - - 0s H 0 0 79589.000000 74927.0922 5.86% - 0s H 0 0 75306.000000 74927.0922 0.50% - 0s 0 0 75199.3443 0 5 75306.0000 75199.3443 0.14% - 0s 0 0 75199.3443 0 8 75306.0000 75199.3443 0.14% - 0s 0 0 75199.3443 0 5 75306.0000 75199.3443 0.14% - 0s 0 0 75208.1825 0 3 75306.0000 75208.1825 0.13% - 0s 0 0 75214.9860 0 4 75306.0000 75214.9860 0.12% - 0s 0 0 75215.7155 0 3 75306.0000 75215.7155 0.12% - 0s 0 0 75215.7155 0 3 75306.0000 75215.7155 0.12% - 0s 0 0 75215.7155 0 3 75306.0000 75215.7155 0.12% - 0s 0 0 75215.8982 0 3 75306.0000 75215.8982 0.12% - 0s 0 0 75218.2535 0 2 75306.0000 75218.2535 0.12% - 1s 0 0 75220.8942 0 1 75306.0000 75220.8942 0.11% - 1s 0 2 75224.3791 0 1 75306.0000 75224.3791 0.11% - 1s Cutting planes: Implied bound: 41 Flow cover: 2 Explored 6 nodes (3795 simplex iterations) in 1.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.530600000000e+04, best bound 7.530600000000e+04, gap 0.0%