Gurobi 5.0.1 (linux64) logging started Wed Apr 24 06:20:02 2013 Optimize a model with 83902 rows, 82992 columns and 331422 nonzeros Presolve removed 91 rows and 0 columns Presolve time: 0.41s Presolved: 83811 rows, 82992 columns, 331331 nonzeros Variable types: 82901 continuous, 91 integer (91 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 9129 7.7443103e+04 7.963065e+03 0.000000e+00 5s 10988 7.8340703e+04 0.000000e+00 0.000000e+00 10s Root relaxation: objective 7.834070e+04, 10988 iterations, 9.99 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 78340.7026 0 64 - 78340.7026 - - 10s H 0 0 130130.00000 78340.7026 39.8% - 15s H 0 0 110981.00000 78340.7026 29.4% - 58s 0 0 93896.9053 0 29 110981.000 93896.9053 15.4% - 76s 0 0 102522.823 0 11 110981.000 102522.823 7.62% - 86s 0 0 105913.395 0 5 110981.000 105913.395 4.57% - 89s H 0 0 108918.00000 105913.395 2.76% - 89s H 0 0 106152.00000 105913.395 0.22% - 90s 0 0 105913.511 0 4 106152.000 105913.511 0.22% - 90s 0 2 105915.182 0 4 106152.000 105915.182 0.22% - 92s Cutting planes: Implied bound: 90 Explored 13 nodes (26637 simplex iterations) in 93.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.061520000000e+05, best bound 1.061520000000e+05, gap 0.0%