Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:20:57 2013 Optimize a model with 61776 rows, 60996 columns and 243516 nonzeros Presolve removed 78 rows and 0 columns Presolve time: 0.28s Presolved: 61698 rows, 60996 columns, 243438 nonzeros Variable types: 60918 continuous, 78 integer (78 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7106 6.5314203e+04 3.591073e+01 0.000000e+00 5s 7234 6.5318554e+04 0.000000e+00 0.000000e+00 5s Root relaxation: objective 6.531855e+04, 7234 iterations, 5.43 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 65318.5537 0 57 - 65318.5537 - - 6s H 0 0 106050.00000 65318.5537 38.4% - 10s 0 0 78317.2611 0 12 106050.000 78317.2611 26.2% - 19s H 0 0 97454.000000 78317.2611 19.6% - 19s 0 0 83231.6059 0 8 97454.0000 83231.6059 14.6% - 23s H 0 0 96262.000000 83231.6059 13.5% - 23s 0 0 85178.2237 0 6 96262.0000 85178.2237 11.5% - 25s 0 0 85749.0540 0 3 96262.0000 85749.0540 10.9% - 26s H 0 0 88028.350093 85749.0540 2.59% - 26s H 0 0 87492.000000 85749.0540 1.99% - 26s 0 0 85994.0597 0 5 87492.0000 85994.0597 1.71% - 27s 0 0 86039.6563 0 5 87492.0000 86039.6563 1.66% - 28s H 0 0 87324.000000 86039.6563 1.47% - 28s H 0 0 86661.000000 86039.6563 0.72% - 28s H 0 0 86427.000000 86039.6563 0.45% - 29s H 0 0 86219.000000 86039.6563 0.21% - 30s 0 2 86042.8994 0 5 86219.0000 86042.8994 0.20% - 31s * 13 3 3 86133.000000 86090.3165 0.05% 147 32s * 16 2 3 86132.000000 86090.4863 0.05% 140 32s Cutting planes: Implied bound: 77 Explored 19 nodes (21748 simplex iterations) in 32.82 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.613200000000e+04, best bound 8.613200000000e+04, gap 0.0%