Build (method = -2) #dp: 2464 Step-3' Graph: 105 vertices and 324 arcs (0.01s) Step-4' Graph: 15 vertices and 144 arcs (0.01s) #V4/#V3 = 0.14 #A4/#A3 = 0.44 Ready! (0.01s) Optimize a model with 84 rows, 145 columns and 409 nonzeros Presolve removed 56 rows and 80 columns Presolve time: 0.00s Presolved: 28 rows, 65 columns, 167 nonzeros Variable types: 0 continuous, 65 integer (9 binary) Found heuristic solution: objective 63.0000000 Optimize a model with 28 rows, 65 columns and 167 nonzeros Presolved: 28 rows, 65 columns, 167 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.300e+01 Factor NZ : 4.060e+02 Factor Ops : 7.714e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.70631244e+02 -6.65382806e+02 8.95e+01 2.22e-16 3.17e+01 0s 1 1.81458211e+02 -2.57712474e+02 9.24e+00 1.55e-15 4.70e+00 0s 2 6.71373978e+01 -6.96684382e+00 1.24e-14 2.44e-15 5.11e-01 0s 3 5.20183418e+01 3.96770988e+01 2.35e-14 8.88e-16 8.51e-02 0s 4 5.00126176e+01 4.98327091e+01 3.82e-14 1.11e-15 1.24e-03 0s 5 5.00000000e+01 4.99999997e+01 1.49e-14 7.77e-16 2.15e-09 0s 6 5.00000000e+01 5.00000000e+01 2.34e-15 7.77e-16 2.30e-15 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 5.00000000e+01 Root relaxation: objective 5.000000e+01, 34 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 (34 simplex iterations) in 0.00 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: 0.00 seconds Total run time: 0.02 seconds Objective: 50 Solution: 1 x [35, 69] 1 x [34, 68] 1 x [30, 67] 1 x [28, 66] 3 x [37, 65] 1 x [23, 64] 3 x [27, 63] 1 x [22, 62] 1 x [17, 61] 2 x [12, 60] 1 x [13, 59] 1 x [8, 58] 3 x [26, 57] 2 x [9, 56] 1 x [6, 55] 2 x [32, 54] 1 x [5, 54] 1 x [43, 53] 1 x [4, 53] 1 x [2, 52] 1 x [36, 51] 1 x [1, 51] 2 x [3, 50] 1 x [7, 49] 1 x [11, 48] 1 x [10, 47] 1 x [16, 46] 1 x [15, 45] 1 x [14, 44] 1 x [20, 42] 1 x [19, 41] 2 x [18, 40] 1 x [24, 39] 1 x [29, 38] 2 x [21, 33] 3 x [25, 31]