Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:21:44 2013 Optimize a model with 69886 rows, 69056 columns and 275726 nonzeros Presolve removed 83 rows and 0 columns Presolve time: 0.32s Presolved: 69803 rows, 69056 columns, 275643 nonzeros Variable types: 68973 continuous, 83 integer (83 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8953 7.2891345e+04 7.083203e+04 0.000000e+00 5s 10910 7.3502056e+04 0.000000e+00 0.000000e+00 10s Root relaxation: objective 7.350206e+04, 10910 iterations, 9.71 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 73502.0555 0 61 - 73502.0555 - - 10s H 0 0 129055.00000 73502.0555 43.0% - 17s 0 0 92356.5919 0 21 129055.000 92356.5919 28.4% - 34s H 0 0 115863.00000 92356.5919 20.3% - 39s 0 0 98632.1174 0 5 115863.000 98632.1174 14.9% - 45s H 0 0 110099.69427 98632.1174 10.4% - 45s H 0 0 108103.00000 98632.1174 8.76% - 45s 0 0 99069.8034 0 6 108103.000 99069.8034 8.36% - 46s H 0 0 105454.32429 99069.8034 6.05% - 46s H 0 0 102821.00000 99069.8034 3.65% - 47s 0 0 99176.9795 0 2 102821.000 99176.9795 3.54% - 47s H 0 0 99239.000000 99176.9795 0.06% - 48s 0 0 99215.1429 0 1 99239.0000 99215.1429 0.02% - 48s 0 0 99224.6809 0 1 99239.0000 99224.6809 0.01% - 48s 0 0 99234.6216 0 1 99239.0000 99234.6216 0.00% - 49s Cutting planes: Implied bound: 80 Explored 0 nodes (25114 simplex iterations) in 49.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.923900000000e+04, best bound 9.923462162162e+04, gap 0.0044%