Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:00:54 2012 Optimize a model with 291 rows, 201 columns and 926 nonzeros Presolve time: 0.00s Presolved: 291 rows, 201 columns, 926 nonzeros Variable types: 0 continuous, 201 integer (201 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 56 65.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s 0 0 0.68000 0 58 60.00000 0.68000 98.9% - 0s H 0 0 59.0000000 0.68000 98.8% - 0s 0 0 0.72000 0 58 59.00000 0.72000 98.8% - 0s 0 0 0.80766 0 62 59.00000 0.80766 98.6% - 0s 0 0 0.84867 0 61 59.00000 0.84867 98.6% - 0s 0 0 0.88911 0 63 59.00000 0.88911 98.5% - 0s 0 0 0.90515 0 69 59.00000 0.90515 98.5% - 0s 0 0 0.92528 0 65 59.00000 0.92528 98.4% - 0s 0 0 0.97269 0 67 59.00000 0.97269 98.4% - 0s 0 0 1.00000 0 58 59.00000 1.00000 98.3% - 0s 0 0 1.02000 0 58 59.00000 1.02000 98.3% - 0s 0 0 1.02000 0 58 59.00000 1.02000 98.3% - 0s 0 0 1.02000 0 58 59.00000 1.02000 98.3% - 0s 0 2 1.02042 0 58 59.00000 1.02042 98.3% - 0s * 27 25 16 39.0000000 4.49191 88.5% 30.3 0s H 58 37 36.0000000 4.64471 87.1% 27.9 0s * 116 74 20 33.0000000 8.00000 75.8% 24.3 0s * 1525 286 30 32.0000000 19.86486 37.9% 20.2 1s H 2667 318 31.0000000 22.73684 26.7% 18.8 1s Explored 4548 nodes (78504 simplex iterations) in 2.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%