Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:27:30 2013 Optimize a model with 924 rows, 70644 columns and 141204 nonzeros Presolve time: 0.11s Presolved: 924 rows, 70644 columns, 141204 nonzeros Variable types: 70560 continuous, 84 integer (84 binary) Root relaxation: objective 9.012362e+04, 2156 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 90123.6180 0 8 - 90123.6180 - - 0s H 0 0 96004.000000 90123.6180 6.13% - 0s 0 0 90354.2546 0 6 96004.0000 90354.2546 5.88% - 0s 0 0 90367.9615 0 5 96004.0000 90367.9615 5.87% - 0s H 0 0 94820.290655 90367.9615 4.70% - 0s H 0 0 94171.000000 90367.9615 4.04% - 0s 0 0 90371.3891 0 4 94171.0000 90371.3891 4.03% - 0s 0 0 90371.8125 0 4 94171.0000 90371.8125 4.03% - 0s 0 0 90372.0928 0 3 94171.0000 90372.0928 4.03% - 1s H 0 0 93237.536052 90372.0928 3.07% - 1s H 0 0 92848.000000 90372.0928 2.67% - 1s 0 0 90372.0928 0 3 92848.0000 90372.0928 2.67% - 1s 0 2 90384.9708 0 3 92848.0000 90384.9708 2.65% - 1s H 3 3 92480.322034 90697.3748 1.93% 68.0 1s H 4 4 90900.856312 90699.0398 0.22% 76.2 1s H 6 3 90802.000000 90701.9300 0.11% 63.5 1s * 8 4 7 90780.000000 90701.9300 0.09% 55.4 1s Cutting planes: Implied bound: 86 Flow cover: 4 Explored 14 nodes (3013 simplex iterations) in 2.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.078000000000e+04, best bound 9.078000000000e+04, gap 0.0%