Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:06:06 2013 Optimize a model with 517 rows, 22137 columns and 44227 nonzeros Presolve time: 0.03s Presolved: 517 rows, 22137 columns, 44227 nonzeros Variable types: 22090 continuous, 47 integer (47 binary) Root relaxation: objective 5.915651e+04, 1007 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59156.5056 0 10 - 59156.5056 - - 0s H 0 0 61231.000000 59156.5056 3.39% - 0s H 0 0 60637.000000 59156.5056 2.44% - 0s 0 0 59641.7778 0 2 60637.0000 59641.7778 1.64% - 0s 0 0 59656.6395 0 5 60637.0000 59656.6395 1.62% - 0s 0 0 59660.2784 0 2 60637.0000 59660.2784 1.61% - 0s 0 0 59666.2974 0 2 60637.0000 59666.2974 1.60% - 0s 0 0 59666.4926 0 2 60637.0000 59666.4926 1.60% - 0s H 0 0 60571.000000 59666.4926 1.49% - 0s 0 0 59666.6875 0 3 60571.0000 59666.6875 1.49% - 0s 0 0 59667.7099 0 3 60571.0000 59667.7099 1.49% - 0s H 0 0 59739.000000 59667.7099 0.12% - 0s 0 0 59667.7099 0 10 59739.0000 59667.7099 0.12% - 0s 0 0 59667.7099 0 2 59739.0000 59667.7099 0.12% - 0s 0 0 59667.7099 0 4 59739.0000 59667.7099 0.12% - 0s 0 0 59667.7099 0 2 59739.0000 59667.7099 0.12% - 0s 0 0 59667.7099 0 2 59739.0000 59667.7099 0.12% - 0s 0 0 59667.7099 0 3 59739.0000 59667.7099 0.12% - 0s 0 2 59667.7099 0 3 59739.0000 59667.7099 0.12% - 0s Cutting planes: Implied bound: 72 Flow cover: 4 Explored 3 nodes (2686 simplex iterations) in 0.82 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.973900000000e+04, best bound 5.973304761905e+04, gap 0.0100%