Build (method = -2) #dp: 2316 Step-3' Graph: 96 vertices and 299 arcs (0.01s) Step-4' Graph: 22 vertices and 151 arcs (0.01s) #V4/#V3 = 0.23 #A4/#A3 = 0.51 Ready! (0.01s) Optimize a model with 88 rows, 152 columns and 417 nonzeros Presolve removed 42 rows and 53 columns Presolve time: 0.00s Presolved: 46 rows, 99 columns, 256 nonzeros Variable types: 0 continuous, 99 integer (9 binary) Found heuristic solution: objective 98.0000000 Found heuristic solution: objective 62.0000000 Optimize a model with 46 rows, 99 columns and 256 nonzeros Presolve removed 1 rows and 2 columns Presolved: 45 rows, 97 columns, 252 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.700e+01 Factor NZ : 6.160e+02 Factor Ops : 1.166e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.14232346e+03 -1.14940855e+03 3.70e+01 2.22e-16 3.29e+01 0s 1 2.80017895e+02 -3.87232359e+02 6.47e+00 6.66e-16 5.02e+00 0s 2 8.54948390e+01 -3.25495370e+01 1.38e-14 5.11e-15 5.37e-01 0s 3 6.62062840e+01 3.48311850e+01 2.13e-14 6.66e-16 1.43e-01 0s 4 6.01056469e+01 5.84077254e+01 3.33e-14 4.44e-16 7.72e-03 0s 5 6.00000061e+01 5.99999592e+01 4.17e-14 4.33e-16 2.13e-07 0s 6 6.00000000e+01 6.00000000e+01 2.84e-14 2.22e-16 2.16e-13 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 6.00000000e+01 Root relaxation: objective 6.000000e+01, 46 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 60.0000000 60.00000 0.0% - 0s Explored 0 nodes (50 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.000000000000e+01, best bound 6.000000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 60 Solution: 3 x [24, 66] 1 x [23, 66] 2 x [14, 65] 2 x [10, 64] 1 x [22, 63] 3 x [25, 62] 1 x [19, 61] 2 x [31, 60] 3 x [11, 59] 1 x [13, 58] 1 x [10, 57] 1 x [36, 56] 2 x [36, 55] 1 x [7, 54] 1 x [6, 53] 1 x [4, 52] 2 x [5, 51] 1 x [1, 50] 1 x [43, 49] 2 x [45, 48] 2 x [45, 47] 1 x [1, 46] 2 x [44, 45] 1 x [3, 42] 1 x [3, 41] 2 x [27, 40] 2 x [28, 39] 1 x [8, 38] 1 x [9, 37] 2 x [29, 35] 2 x [32, 34] 1 x [17, 33] 1 x [18, 30] 1 x [25, 26] 3 x [20, 21] 2 x [15, 16] 3 x [2, 12]