Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:41:39 2013 Optimize a model with 54166 rows, 53436 columns and 213306 nonzeros Presolve removed 73 rows and 0 columns Presolve time: 0.24s Presolved: 54093 rows, 53436 columns, 213233 nonzeros Variable types: 53363 continuous, 73 integer (73 binary) Root relaxation: objective 6.062496e+04, 6317 iterations, 3.92 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60624.9643 0 54 - 60624.9643 - - 4s H 0 0 98819.000000 60624.9643 38.7% - 8s 0 0 76317.4001 0 15 98819.0000 76317.4001 22.8% - 15s H 0 0 87604.000000 76317.4001 12.9% - 16s 0 0 80928.3228 0 8 87604.0000 80928.3228 7.62% - 18s 0 0 81475.5666 0 4 87604.0000 81475.5666 7.00% - 19s 0 0 81503.2413 0 3 87604.0000 81503.2413 6.96% - 19s H 0 0 85800.752101 81503.2413 5.01% - 19s H 0 0 85216.000000 81503.2413 4.36% - 19s 0 2 81517.7693 0 3 85216.0000 81517.7693 4.34% - 20s H 3 3 83228.809416 81596.7493 1.96% 144 21s H 4 4 82862.644293 81599.8077 1.52% 117 21s H 10 9 82771.529412 81599.8077 1.42% 131 22s H 20 11 82036.000000 81599.8077 0.53% 146 23s H 27 10 81979.000000 81599.8077 0.46% 126 24s H 30 6 81850.000000 81622.0208 0.28% 140 24s H 32 6 81790.123810 81664.8511 0.15% 154 24s * 33 6 5 81766.000000 81664.8511 0.12% 155 24s * 35 2 5 81708.000000 81673.9535 0.04% 148 25s Cutting planes: Implied bound: 69 Explored 38 nodes (20144 simplex iterations) in 25.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.170800000000e+04, best bound 8.170800000000e+04, gap 0.0%