Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:14:15 2013 Optimize a model with 572 rows, 27092 columns and 54132 nonzeros Presolve time: 0.04s Presolved: 572 rows, 27092 columns, 54132 nonzeros Variable types: 27040 continuous, 52 integer (52 binary) Root relaxation: objective 6.427626e+04, 1536 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 64276.2630 0 8 - 64276.2630 - - 0s H 0 0 67376.000000 64276.2630 4.60% - 0s 0 0 64411.4051 0 4 67376.0000 64411.4051 4.40% - 0s H 0 0 67049.000000 64411.4051 3.93% - 0s 0 0 64444.0469 0 4 67049.0000 64444.0469 3.89% - 0s 0 0 64451.3667 0 3 67049.0000 64451.3667 3.87% - 0s 0 0 64457.0740 0 2 67049.0000 64457.0740 3.87% - 0s H 0 0 66432.344694 64457.0740 2.97% - 0s H 0 0 65797.000000 64457.0740 2.04% - 0s 0 0 64457.0740 0 2 65797.0000 64457.0740 2.04% - 0s 0 0 64459.2634 0 2 65797.0000 64459.2634 2.03% - 0s 0 0 64459.2634 0 2 65797.0000 64459.2634 2.03% - 0s H 0 0 64660.000000 64459.2634 0.31% - 0s 0 0 64459.2634 0 2 64660.0000 64459.2634 0.31% - 0s 0 0 64459.2634 0 8 64660.0000 64459.2634 0.31% - 0s 0 0 64459.2634 0 4 64660.0000 64459.2634 0.31% - 0s 0 0 64459.2634 0 4 64660.0000 64459.2634 0.31% - 0s 0 0 64459.2634 0 3 64660.0000 64459.2634 0.31% - 0s 0 0 64459.2634 0 2 64660.0000 64459.2634 0.31% - 0s 0 0 64459.2634 0 2 64660.0000 64459.2634 0.31% - 0s 0 0 64459.2634 0 2 64660.0000 64459.2634 0.31% - 0s 0 0 64459.2634 0 2 64660.0000 64459.2634 0.31% - 1s 0 0 64459.2634 0 2 64660.0000 64459.2634 0.31% - 1s 0 2 64464.0039 0 2 64660.0000 64464.0039 0.30% - 1s Cutting planes: Implied bound: 55 Flow cover: 7 Explored 19 nodes (4391 simplex iterations) in 1.39 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%