Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:19:28 2013 Optimize a model with 69886 rows, 69056 columns and 275726 nonzeros Presolve removed 83 rows and 0 columns Presolve time: 0.32s Presolved: 69803 rows, 69056 columns, 275643 nonzeros Variable types: 68973 continuous, 83 integer (83 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7803 7.0920597e+04 1.409810e+04 0.000000e+00 5s 9268 7.1461571e+04 0.000000e+00 0.000000e+00 8s Root relaxation: objective 7.146157e+04, 9268 iterations, 8.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 71461.5711 0 66 - 71461.5711 - - 9s H 0 0 145596.00000 71461.5711 50.9% - 15s 0 0 100925.582 0 14 145596.000 100925.582 30.7% - 31s H 0 0 131456.29875 100925.582 23.2% - 31s H 0 0 114887.00000 100925.582 12.2% - 31s 0 0 107700.019 0 6 114887.000 107700.019 6.26% - 33s H 0 0 113576.00000 107700.019 5.17% - 33s 0 0 108857.710 0 5 113576.000 108857.710 4.15% - 35s H 0 0 109452.00000 108857.710 0.54% - 36s 0 0 108925.963 0 3 109452.000 108925.963 0.48% - 36s 0 2 108956.255 0 3 109452.000 108956.255 0.45% - 39s 1 3 108992.161 1 3 109452.000 108992.161 0.42% 234 40s * 10 3 4 109407.00000 109192.782 0.20% 277 41s Cutting planes: Implied bound: 81 Explored 23 nodes (28886 simplex iterations) in 42.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.094070000000e+05, best bound 1.094070000000e+05, gap 0.0%