Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:29:56 2013 Optimize a model with 63358 rows, 62568 columns and 249798 nonzeros Presolve removed 79 rows and 0 columns Presolve time: 0.30s Presolved: 63279 rows, 62568 columns, 249719 nonzeros Variable types: 62489 continuous, 79 integer (79 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7935 6.3324340e+04 1.915781e+03 0.000000e+00 5s 8455 6.3377689e+04 0.000000e+00 0.000000e+00 6s Root relaxation: objective 6.337769e+04, 8455 iterations, 6.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 63377.6894 0 56 - 63377.6894 - - 6s H 0 0 104039.00000 63377.6894 39.1% - 11s H 0 0 85668.000000 63377.6894 26.0% - 41s 0 0 75133.0185 0 14 85668.0000 75133.0185 12.3% - 49s 0 0 80309.7151 0 10 85668.0000 80309.7151 6.25% - 54s 0 0 81408.5853 0 4 85668.0000 81408.5853 4.97% - 55s H 0 0 85595.000000 81408.5853 4.89% - 56s 0 2 81408.6413 0 4 85595.0000 81408.6413 4.89% - 57s H 2 2 84932.322261 81513.4781 4.03% 167 57s H 3 3 83540.626706 81518.5905 2.42% 129 58s H 4 4 82597.843426 81585.5747 1.23% 213 58s H 6 4 82547.674740 81585.5747 1.17% 202 58s 13 11 81663.3793 13 1 82547.6747 81585.5747 1.17% 160 60s H 14 7 81997.000000 81585.5747 0.50% 149 60s * 39 14 12 81969.000000 81633.8787 0.41% 176 63s H 46 8 81897.000000 81648.2351 0.30% 171 64s * 47 8 4 81829.000000 81648.2351 0.22% 168 64s H 56 0 81734.000000 81676.3514 0.07% 168 65s Cutting planes: Implied bound: 74 Explored 61 nodes (29449 simplex iterations) in 65.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.173400000000e+04, best bound 8.173400000000e+04, gap 0.0%