Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:50:36 2013 Optimize a model with 55648 rows, 54908 columns and 219188 nonzeros Presolve removed 74 rows and 0 columns Presolve time: 0.25s Presolved: 55574 rows, 54908 columns, 219114 nonzeros Variable types: 54834 continuous, 74 integer (74 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7705 6.6795389e+04 6.177258e+03 0.000000e+00 5s 8181 6.6869578e+04 0.000000e+00 0.000000e+00 6s Root relaxation: objective 6.686958e+04, 8181 iterations, 5.98 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66869.5778 0 58 - 66869.5778 - - 6s H 0 0 108651.00000 66869.5778 38.5% - 10s 0 0 85678.1346 0 18 108651.000 85678.1346 21.1% - 21s H 0 0 100987.00000 85678.1346 15.2% - 21s 0 0 88932.6782 0 7 100987.000 88932.6782 11.9% - 23s H 0 0 97725.239014 88932.6782 9.00% - 23s H 0 0 96423.000000 88932.6782 7.77% - 23s 0 0 89006.1272 0 5 96423.0000 89006.1272 7.69% - 24s H 0 0 93738.677190 89006.1272 5.05% - 24s H 0 0 92998.000000 89006.1272 4.29% - 24s 0 0 89015.9083 0 2 92998.0000 89015.9083 4.28% - 24s H 0 0 90145.155963 89015.9083 1.25% - 24s H 0 0 89663.000000 89015.9083 0.72% - 24s H 0 0 89512.000000 89015.9083 0.55% - 25s 0 2 89017.4927 0 2 89512.0000 89017.4927 0.55% - 26s 18 1 89446.8131 4 3 89512.0000 89446.8131 0.07% 287 30s * 20 1 6 89462.000000 89456.0000 0.01% 264 30s Cutting planes: Implied bound: 68 Explored 21 nodes (22820 simplex iterations) in 30.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.946200000000e+04, best bound 8.945600000000e+04, gap 0.0067%