Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:14:30 2013 Optimize a model with 27664 rows, 27144 columns and 108264 nonzeros Presolve removed 52 rows and 0 columns Presolve time: 0.12s Presolved: 27612 rows, 27144 columns, 108212 nonzeros Variable types: 27092 continuous, 52 integer (52 binary) Root relaxation: objective 4.901586e+04, 4436 iterations, 1.97 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49015.8572 0 46 - 49015.8572 - - 2s H 0 0 70862.000000 49015.8572 30.8% - 3s 0 0 63293.6226 0 6 70862.0000 63293.6226 10.7% - 5s H 0 0 69596.774287 63293.6226 9.06% - 5s H 0 0 66025.000000 63293.6226 4.14% - 5s H 0 0 65755.000000 63293.6226 3.74% - 5s 0 0 64386.3513 0 4 65755.0000 64386.3513 2.08% - 5s H 0 0 65685.000000 64386.3513 1.98% - 5s 0 0 64417.7308 0 3 65685.0000 64417.7308 1.93% - 5s 0 0 64445.4537 0 2 65685.0000 64445.4537 1.89% - 5s H 0 0 65566.000000 64445.4537 1.71% - 6s H 0 0 65217.000000 64445.4537 1.18% - 6s 0 0 64459.2634 0 2 65217.0000 64459.2634 1.16% - 6s H 0 0 64660.000000 64459.2634 0.31% - 6s 0 2 64463.5957 0 2 64660.0000 64463.5957 0.30% - 6s Cutting planes: Gomory: 1 Implied bound: 52 Explored 14 nodes (10116 simplex iterations) in 7.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.466000000000e+04, best bound 6.466000000000e+04, gap 0.0%