Build (method = -2) #dp: 2135 Step-3' Graph: 104 vertices and 316 arcs (0.01s) Step-4' Graph: 13 vertices and 134 arcs (0.01s) #V4/#V3 = 0.12 #A4/#A3 = 0.42 Ready! (0.01s) Optimize a model with 77 rows, 135 columns and 384 nonzeros Presolve removed 45 rows and 63 columns Presolve time: 0.00s Presolved: 32 rows, 72 columns, 193 nonzeros Variable types: 0 continuous, 72 integer (9 binary) Found heuristic solution: objective 70.0000000 Found heuristic solution: objective 51.0000000 Optimize a model with 32 rows, 72 columns and 193 nonzeros Presolved: 32 rows, 72 columns, 193 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.100e+01 Factor NZ : 4.990e+02 Factor Ops : 1.042e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.92483270e+02 -4.64967177e+02 6.01e+01 2.22e-16 1.96e+01 0s 1 1.42588998e+02 -1.72098834e+02 5.73e+00 6.66e-16 2.84e+00 0s 2 6.23496035e+01 1.13872709e+01 2.58e-14 3.55e-15 3.09e-01 0s 3 5.04420225e+01 4.71043508e+01 1.15e-14 2.22e-16 2.02e-02 0s 4 5.00016234e+01 4.99967167e+01 5.04e-15 1.89e-16 2.97e-05 0s 5 5.00000000e+01 5.00000000e+01 6.99e-15 2.22e-16 2.99e-11 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 5.00000000e+01 Root relaxation: objective 5.000000e+01, 37 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 50.0000000 50.00000 0.0% - 0s Explored 0 nodes (37 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 50 Solution: 2 x [29, 64] 1 x [33, 63] 1 x [32, 62] 1 x [30, 61] 1 x [23, 60] 1 x [21, 59] 1 x [19, 58] 2 x [6, 57] 1 x [43, 56] 3 x [43, 55] 2 x [2, 54] 1 x [49, 53] 1 x [4, 52] 1 x [3, 51] 2 x [1, 50] 1 x [5, 48] 1 x [15, 47] 1 x [12, 46] 2 x [43, 45] 1 x [10, 44] 1 x [7, 43] 1 x [16, 42] 1 x [22, 41] 1 x [28, 40] 1 x [25, 39] 1 x [31, 38] 1 x [36, 37] 2 x [26, 35] 2 x [20, 34] 3 x [13, 27] 3 x [9, 24] 2 x [17, 18] 2 x [11, 14] 2 x [8, 12]