Build (method = -2) #dp: 32047 Step-3' Graph: 405 vertices and 14015 arcs (0.24s) Step-4' Graph: 338 vertices and 13881 arcs (0.25s) #V4/#V3 = 0.83 #A4/#A3 = 0.99 Ready! (0.25s) Optimize a model with 486 rows, 13882 columns and 40974 nonzeros Presolve removed 18 rows and 34 columns Presolve time: 0.20s Presolved: 468 rows, 13848 columns, 40569 nonzeros Variable types: 0 continuous, 13848 integer (10616 binary) Optimize a model with 468 rows, 13848 columns and 40569 nonzeros Presolved: 468 rows, 13848 columns, 40569 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 2.223e+04 Factor NZ : 4.570e+04 (roughly 6 MBytes of memory) Factor Ops : 5.929e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.56079518e+04 -2.68603720e+05 5.19e+05 1.84e-01 9.05e+01 0s 1 1.21825094e+04 -7.03687612e+04 7.37e+04 9.73e-02 1.42e+01 0s 2 1.65197087e+03 -1.01730105e+04 6.92e+03 5.18e-03 1.46e+00 0s 3 5.17119628e+02 -3.47650630e+03 1.06e+03 6.47e-04 2.90e-01 0s 4 2.21252821e+02 -5.27611913e+02 1.30e+02 5.83e-16 4.25e-02 0s 5 1.56043899e+02 -2.10418522e+02 6.54e+01 4.02e-16 2.00e-02 0s 6 1.07592223e+02 -1.05406618e+02 3.03e+01 3.17e-16 1.05e-02 0s 7 9.55844353e+01 -3.49918212e+01 2.09e+01 3.33e-16 6.29e-03 0s 8 8.44553364e+01 -4.43160663e+00 1.19e+01 4.44e-16 3.95e-03 0s 9 7.72930419e+01 1.59719398e+01 3.76e+00 2.64e-16 2.41e-03 0s 10 7.17378909e+01 3.49633483e+01 1.11e+00 3.33e-16 1.37e-03 0s 11 7.04155387e+01 4.23768747e+01 7.57e-01 3.62e-16 1.03e-03 0s 12 6.84534106e+01 5.89572793e+01 3.00e-01 3.06e-16 3.47e-04 0s 13 6.76751001e+01 6.18406247e+01 1.94e-01 2.66e-16 2.13e-04 0s 14 6.66855493e+01 6.38280813e+01 5.82e-02 4.44e-16 1.04e-04 0s 15 6.63116083e+01 6.43858871e+01 3.00e-02 4.44e-16 6.98e-05 0s 16 6.62022452e+01 6.49090627e+01 2.24e-02 2.45e-16 4.69e-05 0s 17 6.61107393e+01 6.50788261e+01 1.62e-02 3.01e-16 3.74e-05 0s 18 6.61044574e+01 6.51325521e+01 1.58e-02 4.44e-16 3.52e-05 0s 19 6.60620384e+01 6.53772554e+01 1.32e-02 2.72e-16 2.48e-05 0s 20 6.59942239e+01 6.54345576e+01 9.10e-03 4.44e-16 2.03e-05 0s 21 6.59703569e+01 6.55181595e+01 7.74e-03 3.33e-16 1.64e-05 0s 22 6.59242269e+01 6.55371161e+01 5.58e-03 3.02e-16 1.40e-05 0s 23 6.59093888e+01 6.55780226e+01 4.92e-03 2.71e-16 1.20e-05 0s 24 6.59006150e+01 6.56219221e+01 4.40e-03 3.09e-16 1.01e-05 0s 25 6.58751320e+01 6.56709284e+01 3.30e-03 3.19e-16 7.40e-06 0s 26 6.58659713e+01 6.57037834e+01 2.90e-03 4.44e-16 5.88e-06 0s 27 6.58592729e+01 6.57282063e+01 2.61e-03 3.33e-16 4.75e-06 0s 28 6.58375615e+01 6.57692926e+01 1.33e-03 2.26e-16 2.47e-06 0s 29 6.58164659e+01 6.57928356e+01 2.37e-04 2.55e-16 8.54e-07 0s 30 6.58117890e+01 6.58066355e+01 1.56e-05 4.44e-16 1.86e-07 0s 31 6.58110767e+01 6.58108644e+01 3.73e-07 3.62e-16 7.66e-09 0s 32 6.58110001e+01 6.58109999e+01 2.70e-13 3.33e-16 9.19e-12 0s Barrier solved model in 32 iterations and 0.38 seconds Optimal objective 6.58110001e+01 Root relaxation: objective 6.581100e+01, 4275 iterations, 0.49 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 65.81100 0 79 - 65.81100 - - 2s H 0 0 95.0000000 65.81100 30.7% - 2s H 0 0 67.0000000 65.81100 1.77% - 2s H 0 0 66.0000000 65.81100 0.29% - 5s Explored 0 nodes (10738 simplex iterations) in 5.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.600000000000e+01, best bound 6.600000000000e+01, gap 0.0% Preprocessing time: 0.30 seconds Gurobi run time: 5.01 seconds Total run time: 5.31 seconds Objective: 66 Solution: 1 x [15, 65, 148] 1 x [19, 63, 147] 1 x [14, 67, 146] 1 x [26, 56, 146] 1 x [30, 47, 146] 1 x [9, 74, 145] 1 x [16, 69, 144] 1 x [24, 64, 143] 1 x [34, 45, 143] 1 x [9, 78, 142] 1 x [19, 71, 142] 1 x [8, 79, 141] 1 x [19, 73, 140] 1 x [35, 50, 140] 1 x [25, 68, 139] 1 x [33, 55, 138] 1 x [5, 84, 137] 1 x [37, 51, 136] 1 x [1, 89, 135] 1 x [13, 80, 135] 1 x [41, 48, 134] 1 x [13, 84, 133] 1 x [38, 52, 132] 1 x [12, 85, 131] 1 x [21, 80, 130] 1 x [7, 90, 129] 1 x [20, 83, 129] 1 x [10, 88, 128] 1 x [13, 87, 127] 1 x [22, 84, 126] 1 x [49, 52, 126] 1 x [6, 96, 125] 1 x [7, 95, 124] 1 x [27, 80, 123] 1 x [36, 69, 122] 1 x [44, 62, 121] 1 x [6, 101, 120] 1 x [42, 65, 119] 1 x [17, 92, 118] 1 x [55, 57, 118] 1 x [30, 80, 117] 1 x [45, 65, 117] 1 x [19, 91, 116] 1 x [46, 66, 116] 1 x [3, 109, 115] 1 x [53, 62, 114] 1 x [18, 95, 113] 1 x [23, 93, 112] 1 x [32, 82, 112] 1 x [15, 101, 111] 1 x [40, 75, 111] 1 x [60, 61, 110] 1 x [41, 76, 108] 1 x [30, 86, 107] 1 x [24, 26, 107] 1 x [54, 70, 106] 1 x [43, 77, 105] 1 x [19, 103, 104] 1 x [25, 99, 103] 1 x [29, 88, 102] 1 x [39, 81, 100] 1 x [28, 93, 98] 1 x [58, 72, 97] 1 x [59, 74, 94] 1 x [11, 18, 31, 89] 1 x [2, 4, 70, 79]