Build (method = -2) #dp: 524 Step-3' Graph: 114 vertices and 335 arcs (0.00s) Step-4' Graph: 28 vertices and 163 arcs (0.00s) #V4/#V3 = 0.25 #A4/#A3 = 0.49 Ready! (0.00s) Optimize a model with 65 rows, 164 columns and 440 nonzeros Presolve removed 27 rows and 33 columns Presolve time: 0.00s Presolved: 38 rows, 131 columns, 350 nonzeros Variable types: 0 continuous, 131 integer (0 binary) Found heuristic solution: objective 3412.0000000 Found heuristic solution: objective 2739.0000000 Optimize a model with 38 rows, 131 columns and 350 nonzeros Presolved: 38 rows, 131 columns, 350 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.790e+02 Factor NZ : 4.620e+02 Factor Ops : 6.590e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.51255524e+04 -2.43168441e+04 5.04e+04 1.11e-16 6.70e+02 0s 1 5.29124391e+03 -7.92788215e+03 4.95e+03 3.33e-16 9.02e+01 0s 2 3.34436013e+03 1.28554377e+02 6.00e+00 2.40e-14 1.17e+01 0s 3 2.88502426e+03 2.06838431e+03 3.81e-03 2.89e-15 2.97e+00 0s 4 2.64373892e+03 2.55655049e+03 1.80e-04 3.33e-16 3.17e-01 0s 5 2.62712095e+03 2.62675990e+03 6.96e-07 2.96e-16 1.31e-03 0s 6 2.62700000e+03 2.62700000e+03 9.09e-13 1.44e-16 1.45e-09 0s 7 2.62700000e+03 2.62700000e+03 1.14e-13 3.33e-16 3.45e-15 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.62700000e+03 Root relaxation: objective 2.627000e+03, 61 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2627.0000000 2627.00000 0.0% - 0s Explored 0 nodes (61 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.627000000000e+03, best bound 2.627000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 2627 Solution: 167 x [1] 9 x [2] 100 x [2, 35] 11 x [2, 36] 168 x [3] 151 x [4, 36] 15 x [5] 72 x [5, 34] 42 x [6] 16 x [7] 158 x [8, 32] 2 x [9] 49 x [9, 29] 32 x [9, 30] 31 x [10] 121 x [10, 31] 30 x [11] 94 x [11, 28] 193 x [12, 27] 83 x [13] 127 x [14] 45 x [15] 189 x [16] 11 x [17] 17 x [18] 17 x [19] 13 x [19, 25] 38 x [20, 25] 61 x [21] 61 x [21, 27] 149 x [22] 56 x [22, 26] 2 x [22, 32] 60 x [22, 33] 49 x [22, 37] 75 x [23] 113 x [23, 24]