Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:56:58 2013 Optimize a model with 57150 rows, 56400 columns and 225150 nonzeros Presolve removed 75 rows and 0 columns Presolve time: 0.26s Presolved: 57075 rows, 56400 columns, 225075 nonzeros Variable types: 56325 continuous, 75 integer (75 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7223 6.6734733e+04 2.000037e-01 0.000000e+00 5s 7230 6.6734733e+04 0.000000e+00 0.000000e+00 5s Root relaxation: objective 6.673473e+04, 7230 iterations, 5.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66734.7329 0 57 - 66734.7329 - - 5s H 0 0 112544.00000 66734.7329 40.7% - 8s 0 0 84539.6056 0 17 112544.000 84539.6056 24.9% - 18s H 0 0 96695.000000 84539.6056 12.6% - 19s 0 0 90752.8261 0 10 96695.0000 90752.8261 6.15% - 22s 0 0 91545.1655 0 6 96695.0000 91545.1655 5.33% - 24s H 0 0 94609.000000 91545.1655 3.24% - 24s 0 0 91695.6512 0 2 94609.0000 91695.6512 3.08% - 25s H 0 0 93126.833333 91695.6512 1.54% - 25s H 0 0 92769.000000 91695.6512 1.16% - 25s H 0 0 92218.000000 91695.6512 0.57% - 26s 0 2 91696.0040 0 2 92218.0000 91696.0040 0.57% - 27s 19 7 91937.6800 17 1 92218.0000 91862.7593 0.39% 156 30s H 22 6 92046.000000 91862.7593 0.20% 144 30s * 54 0 21 92032.000000 92032.0000 0.0% 107 32s Cutting planes: Implied bound: 74 Explored 55 nodes (24236 simplex iterations) in 32.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.203200000000e+04, best bound 9.203200000000e+04, gap 0.0%