Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:15:08 2013 Optimize a model with 60214 rows, 59444 columns and 237314 nonzeros Presolve removed 77 rows and 0 columns Presolve time: 0.27s Presolved: 60137 rows, 59444 columns, 237237 nonzeros Variable types: 59367 continuous, 77 integer (77 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 6641 6.3151474e+04 2.537924e+05 0.000000e+00 5s 7497 6.3462302e+04 0.000000e+00 0.000000e+00 7s Root relaxation: objective 6.346230e+04, 7497 iterations, 6.95 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 63462.3021 0 60 - 63462.3021 - - 7s H 0 0 98709.000000 63462.3021 35.7% - 12s 0 0 82574.6594 0 16 98709.0000 82574.6594 16.3% - 20s H 0 0 95643.000000 82574.6594 13.7% - 21s 0 0 86485.0031 0 4 95643.0000 86485.0031 9.58% - 23s H 0 0 89863.939609 86485.0031 3.76% - 23s H 0 0 88954.000000 86485.0031 2.78% - 23s 0 0 86604.2734 0 6 88954.0000 86604.2734 2.64% - 24s H 0 0 86880.000000 86604.2734 0.32% - 24s 0 0 86678.4803 0 4 86880.0000 86678.4803 0.23% - 24s 0 2 86683.9262 0 4 86880.0000 86683.9262 0.23% - 26s * 7 3 7 86867.000000 86842.0000 0.03% 151 26s Cutting planes: Implied bound: 74 MIR: 1 Explored 11 nodes (17668 simplex iterations) in 26.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.686700000000e+04, best bound 8.686700000000e+04, gap 0.0%