Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:13:28 2013 Optimize a model with 759 rows, 47679 columns and 95289 nonzeros Presolve time: 0.07s Presolved: 759 rows, 47679 columns, 95289 nonzeros Variable types: 47610 continuous, 69 integer (69 binary) Root relaxation: objective 7.390874e+04, 1794 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 73908.7444 0 11 - 73908.7444 - - 0s H 0 0 80030.000000 73908.7444 7.65% - 0s H 0 0 75683.000000 73908.7444 2.34% - 0s 0 0 74473.1660 0 7 75683.0000 74473.1660 1.60% - 0s 0 0 74545.5326 0 7 75683.0000 74545.5326 1.50% - 0s 0 0 74561.1293 0 7 75683.0000 74561.1293 1.48% - 0s 0 0 74572.7253 0 6 75683.0000 74572.7253 1.47% - 0s 0 0 74573.7133 0 7 75683.0000 74573.7133 1.47% - 0s 0 0 74573.7355 0 6 75683.0000 74573.7355 1.47% - 0s 0 0 74574.7380 0 8 75683.0000 74574.7380 1.46% - 0s H 0 0 74753.000000 74574.7380 0.24% - 1s 0 0 74574.7380 0 11 74753.0000 74574.7380 0.24% - 1s 0 0 74574.7380 0 6 74753.0000 74574.7380 0.24% - 1s 0 0 74574.7380 0 5 74753.0000 74574.7380 0.24% - 1s 0 0 74578.9370 0 6 74753.0000 74578.9370 0.23% - 1s 0 0 74588.8194 0 6 74753.0000 74588.8194 0.22% - 1s 0 0 74589.9955 0 6 74753.0000 74589.9955 0.22% - 1s 0 0 74589.9955 0 6 74753.0000 74589.9955 0.22% - 1s 0 0 74590.7229 0 6 74753.0000 74590.7229 0.22% - 1s 0 0 74598.3440 0 5 74753.0000 74598.3440 0.21% - 1s 0 2 74607.0042 0 5 74753.0000 74607.0042 0.20% - 2s Cutting planes: Implied bound: 116 Flow cover: 5 Explored 18 nodes (4805 simplex iterations) in 2.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.475300000000e+04, best bound 7.475300000000e+04, gap 0.0%