Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:40:51 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 simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7150 6.5952840e+04 2.010466e+03 0.000000e+00 5s 7534 6.6022306e+04 0.000000e+00 0.000000e+00 6s Root relaxation: objective 6.602231e+04, 7534 iterations, 5.77 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66022.3060 0 58 - 66022.3060 - - 6s H 0 0 118048.00000 66022.3060 44.1% - 11s 0 0 81383.1841 0 13 118048.000 81383.1841 31.1% - 18s H 0 0 103532.77938 81383.1841 21.4% - 18s H 0 0 97635.000000 81383.1841 16.6% - 18s 0 0 86881.3818 0 7 97635.0000 86881.3818 11.0% - 21s H 0 0 96895.976875 86881.3818 10.3% - 21s H 0 0 94046.000000 86881.3818 7.62% - 21s H 0 0 92099.000000 86881.3818 5.67% - 21s 0 0 87095.6476 0 5 92099.0000 87095.6476 5.43% - 21s H 0 0 91513.000000 87095.6476 4.83% - 21s H 0 0 87338.000000 87095.6476 0.28% - 21s 0 0 87095.8783 0 4 87338.0000 87095.8783 0.28% - 22s 0 0 87282.7693 0 3 87338.0000 87282.7693 0.06% - 22s 0 0 87294.2572 0 2 87338.0000 87294.2572 0.05% - 23s Cutting planes: Implied bound: 69 Explored 0 nodes (16295 simplex iterations) in 23.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.733800000000e+04, best bound 8.733800000000e+04, gap 0.0%