Build (method = -2) #dp: 3352 Step-3' Graph: 90 vertices and 1321 arcs (0.01s) Step-4' Graph: 90 vertices and 1321 arcs (0.01s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 156 rows, 1322 columns and 3790 nonzeros Presolve removed 43 rows and 47 columns Presolve time: 0.03s Presolved: 113 rows, 1275 columns, 3684 nonzeros Variable types: 0 continuous, 1275 integer (779 binary) Found heuristic solution: objective 74.0000000 Optimize a model with 113 rows, 1275 columns and 3684 nonzeros Presolved: 113 rows, 1275 columns, 3684 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.740e+03 Factor NZ : 4.592e+03 Factor Ops : 2.457e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.02451059e+03 -5.00244504e+03 3.13e+03 1.72e-01 2.19e+01 0s 1 6.78999722e+02 -2.13185147e+03 5.40e+02 6.66e-16 4.14e+00 0s 2 1.72737548e+02 -7.07868653e+02 4.19e+01 5.55e-16 5.50e-01 0s 3 8.77728295e+01 -3.90653175e+01 2.45e+00 3.61e-16 5.77e-02 0s 4 6.49773248e+01 1.41211789e+01 4.63e-01 2.22e-16 2.08e-02 0s 5 5.77011350e+01 2.89227035e+01 2.22e-01 2.01e-16 1.15e-02 0s 6 5.30807247e+01 3.86497157e+01 1.11e-01 1.37e-16 5.74e-03 0s 7 5.03825840e+01 4.26490716e+01 5.67e-02 2.22e-16 3.07e-03 0s 8 4.86872770e+01 4.57864517e+01 2.17e-02 2.62e-16 1.15e-03 0s 9 4.79631400e+01 4.70209435e+01 8.64e-03 3.33e-16 3.75e-04 0s 10 4.75045816e+01 4.74608436e+01 4.83e-05 2.22e-16 1.71e-05 0s 11 4.75000048e+01 4.74999609e+01 3.41e-13 3.32e-16 1.72e-08 0s 12 4.75000000e+01 4.75000000e+01 2.10e-13 2.71e-16 1.72e-11 0s 13 4.75000000e+01 4.75000000e+01 5.21e-13 2.38e-16 1.95e-17 0s Barrier solved model in 13 iterations and 0.01 seconds Optimal objective 4.75000000e+01 Root relaxation: objective 4.750000e+01, 418 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.50000 0 2 74.00000 47.50000 35.8% - 0s H 0 0 48.0000000 47.50000 1.04% - 0s Explored 0 nodes (654 simplex iterations) in 0.06 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.06 seconds Total run time: 0.09 seconds Objective: 48 Solution: 1 x [66] 1 x [65] 1 x [64] 1 x [63] 1 x [8, 62] 1 x [5, 62] 2 x [9, 61] 2 x [3, 6, 60] 1 x [12, 59] 1 x [14, 58] 1 x [15, 57] 1 x [1, 13, 57] 3 x [16, 56] 1 x [10, 55] 1 x [17, 54] 1 x [4, 53] 1 x [18, 52] 1 x [19, 51] 1 x [20, 50] 1 x [9, 11, 49] 1 x [2, 21, 48] 2 x [22, 47] 1 x [23, 46] 1 x [22, 45] 1 x [26, 44] 2 x [26, 43] 1 x [24, 42] 1 x [6, 24, 42] 1 x [25, 41] 1 x [10, 22, 41] 1 x [30, 40] 1 x [29, 40] 1 x [32, 39] 1 x [32, 38] 1 x [31, 38] 1 x [31, 37] 1 x [33, 36] 1 x [32, 36] 1 x [9, 27, 36] 1 x [7, 28, 35] 1 x [34] 1 x [34, 34]