Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:11:42 2013 Optimize a model with 76734 rows, 75864 columns and 302934 nonzeros Presolve removed 87 rows and 0 columns Presolve time: 0.36s Presolved: 76647 rows, 75864 columns, 302847 nonzeros Variable types: 75777 continuous, 87 integer (87 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7648 6.9323342e+04 3.276073e+04 0.000000e+00 5s 9268 6.9772432e+04 0.000000e+00 0.000000e+00 9s Root relaxation: objective 6.977243e+04, 9268 iterations, 9.30 seconds Total elapsed time = 10.03s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69772.4323 0 59 - 69772.4323 - - 10s H 0 0 112638.00000 69772.4323 38.1% - 15s H 0 0 97692.000000 69772.4323 28.6% - 42s 0 0 84099.7611 0 28 97692.0000 84099.7611 13.9% - 57s 0 0 89298.2191 0 12 97692.0000 89298.2191 8.59% - 68s H 0 0 96983.000000 89298.2191 7.92% - 68s 0 0 90687.5075 0 8 96983.0000 90687.5075 6.49% - 70s H 0 0 92330.000000 90687.5075 1.78% - 70s 0 0 90862.9891 0 8 92330.0000 90862.9891 1.59% - 71s 0 0 90921.8294 0 6 92330.0000 90921.8294 1.53% - 72s 0 2 90933.8074 0 6 92330.0000 90933.8074 1.51% - 74s 3 5 91422.0462 2 5 92330.0000 91422.0462 0.98% 461 75s 18 14 92266.7483 13 2 92330.0000 91595.5228 0.80% 472 80s H 40 15 92248.230769 91626.3256 0.67% 292 83s * 44 17 9 92072.000000 91626.3256 0.48% 297 84s 48 17 91886.9030 7 3 92072.0000 91642.4318 0.47% 298 85s * 54 14 12 91963.000000 91642.4318 0.35% 277 85s * 75 4 11 91904.000000 91867.3096 0.04% 265 88s Cutting planes: Implied bound: 86 Explored 80 nodes (41854 simplex iterations) in 88.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.190400000000e+04, best bound 9.190400000000e+04, gap 0.0%