Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:37:46 2013 Optimize a model with 37942 rows, 37332 columns and 148962 nonzeros Presolve removed 61 rows and 0 columns Presolve time: 0.16s Presolved: 37881 rows, 37332 columns, 148901 nonzeros Variable types: 37271 continuous, 61 integer (61 binary) Root relaxation: objective 5.169148e+04, 4819 iterations, 2.51 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 51691.4806 0 49 - 51691.4806 - - 2s H 0 0 75192.000000 51691.4806 31.3% - 4s 0 0 61803.7306 0 5 75192.0000 61803.7306 17.8% - 7s H 0 0 66730.261798 61803.7306 7.38% - 7s H 0 0 65461.000000 61803.7306 5.59% - 7s 0 0 62928.3127 0 7 65461.0000 62928.3127 3.87% - 8s 0 0 62965.1034 0 7 65461.0000 62965.1034 3.81% - 8s H 0 0 65157.000000 62965.1034 3.36% - 8s 0 0 62969.8869 0 3 65157.0000 62969.8869 3.36% - 8s 0 0 62969.8869 0 3 65157.0000 62969.8869 3.36% - 9s 0 2 62984.6410 0 3 65157.0000 62984.6410 3.33% - 9s 3 5 63191.0437 3 3 65157.0000 63116.1170 3.13% 282 10s H 4 4 63957.479452 63116.1170 1.32% 212 10s H 6 5 63888.979730 63116.1170 1.21% 171 10s * 11 6 10 63329.000000 63116.1170 0.34% 135 10s H 14 1 63250.647887 63116.1170 0.21% 107 10s * 17 1 5 63181.000000 63181.0000 0.0% 114 11s Cutting planes: Implied bound: 54 Explored 18 nodes (11425 simplex iterations) in 11.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.318100000000e+04, best bound 6.318100000000e+04, gap 0.0%