
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 03:06:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2463.32.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo2463.32.lp
Reading time = 0.19 seconds
: 114237 rows, 1313 columns, 343619 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 114237 rows, 1313 columns and 343619 nonzeros
Model fingerprint: 0x82fe69e4
Variable types: 33 continuous, 1280 integer (1280 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective -0.0000000
Presolve removed 50241 rows and 27 columns
Presolve time: 0.87s
Presolved: 63996 rows, 1286 columns, 193185 nonzeros
Variable types: 0 continuous, 1286 integer (1253 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 1286 rows, 65282 columns, 194471 nonzeros


Starting sifting (using dual simplex for sub-problems)...

    Iter     Pivots    Primal Obj      Dual Obj        Time
       0         33    -infinity     -0.0000000e+00      1s
       1       1253  -1.9956761e+02  -7.1682630e-02      1s
       2       3060  -1.8666914e+02  -8.1732770e-02      1s
       3       4997  -1.8523565e+02  -8.9949190e-02      1s
       4       6914  -1.8392992e+02  -1.3781541e-01      2s
       5       8689  -1.8193000e+02  -1.4697192e-01      2s
       6      10630  -1.8157446e+02  -1.7534372e-01      2s
       7      12583  -1.8156214e+02  -2.4678723e-01      2s
       8      13651  -3.4043986e+01  -2.5002102e-01      2s
       9      14571  -2.8009657e+01  -2.6377817e-01      2s
      10      15587  -2.8009657e+01  -2.7881347e-01      2s
      11      16664  -2.8009657e+01  -2.8464988e-01      2s
      12      17598  -2.8009657e+01  -2.9512168e-01      2s

Sifting complete


Root relaxation: objective 2.800000e+01, 42846 iterations, 3.76 seconds (2.91 work units)
Total elapsed time = 10.62s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   28.00000    0  280    5.00000   28.00000   460%     -   11s
H    0     0                       6.0000000   28.00000   367%     -   12s
H    0     0                       7.0000000   28.00000   300%     -   16s
     0     0   28.00000    0  491    7.00000   28.00000   300%     -   16s
H    0     0                       8.0000000   28.00000   250%     -   17s
     0     0   28.00000    0  445    8.00000   28.00000   250%     -   18s
H    0     0                      10.0000000   28.00000   180%     -   34s
     0     0   28.00000    0  291   10.00000   28.00000   180%     -   34s
     0     0   28.00000    0  291   10.00000   28.00000   180%     -   35s
     0     0   28.00000    0  298   10.00000   28.00000   180%     -   44s
     0     0   28.00000    0  279   10.00000   28.00000   180%     -   45s
     0     0   28.00000    0  440   10.00000   28.00000   180%     -   50s

Cutting planes:
  Cover: 29
  Clique: 15
  MIR: 67
  StrongCG: 2
  GUB cover: 5
  Zero half: 34
  RLT: 36
  BQP: 5

Explored 1 nodes (74965 simplex iterations) in 50.07 seconds (49.83 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 10 8 7 ... -0

Time limit reached
Best objective 1.000000000000e+01, best bound 2.800000000000e+01, gap 180.0000%

Wrote result file './lp_solutions/grafo2463.32.sol'

