Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:18:18 2013 Optimize a model with 594 rows, 29214 columns and 58374 nonzeros Presolve time: 0.04s Presolved: 594 rows, 29214 columns, 58374 nonzeros Variable types: 29160 continuous, 54 integer (54 binary) Root relaxation: objective 5.926487e+04, 1100 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59264.8731 0 8 - 59264.8731 - - 0s H 0 0 61386.000000 59264.8731 3.46% - 0s H 0 0 60015.000000 59264.8731 1.25% - 0s 0 0 59636.7086 0 3 60015.0000 59636.7086 0.63% - 0s 0 0 59662.1591 0 6 60015.0000 59662.1591 0.59% - 0s 0 0 59666.2793 0 3 60015.0000 59666.2793 0.58% - 0s 0 0 59666.5585 0 4 60015.0000 59666.5585 0.58% - 0s 0 0 59666.7479 0 3 60015.0000 59666.7479 0.58% - 0s 0 0 59666.7479 0 8 60015.0000 59666.7479 0.58% - 0s 0 0 59666.7479 0 3 60015.0000 59666.7479 0.58% - 0s 0 0 59666.7479 0 6 60015.0000 59666.7479 0.58% - 0s 0 0 59666.7479 0 3 60015.0000 59666.7479 0.58% - 0s 0 0 59666.7479 0 4 60015.0000 59666.7479 0.58% - 0s 0 0 59666.7479 0 4 60015.0000 59666.7479 0.58% - 0s 0 2 59666.9494 0 4 60015.0000 59666.9494 0.58% - 1s * 8 4 8 59916.000000 59666.9494 0.42% 23.4 1s Cutting planes: Implied bound: 121 Flow cover: 6 Explored 15 nodes (3311 simplex iterations) in 1.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.991600000000e+04, best bound 5.991263481360e+04, gap 0.0056%