
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:14:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5308.39.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/grafo5308.39.lp
Reading time = 0.13 seconds
: 75718 rows, 2025 columns, 228817 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 75718 rows, 2025 columns and 228817 nonzeros
Model fingerprint: 0xf394a41e
Variable types: 44 continuous, 1981 integer (1981 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]
Presolve removed 17445 rows and 19 columns
Presolve time: 0.50s
Presolved: 58273 rows, 2006 columns, 176869 nonzeros
Variable types: 0 continuous, 2006 integer (1962 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2006 rows, 60279 columns, 178875 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28321    3.9903847e+01   0.000000e+00   1.999442e+02      5s
   31653    4.0000000e+01   0.000000e+00   0.000000e+00      6s
   31653    4.0000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.000000e+01, 31653 iterations, 5.03 seconds (4.36 work units)
Total elapsed time = 11.01s (DegenMoves)

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

     0     0   40.00000    0  498   10.00000   40.00000   300%     -   11s
H    0     0                      11.0000000   40.00000   264%     -   11s
     0     0   40.00000    0  569   11.00000   40.00000   264%     -   18s
H    0     0                      12.0000000   40.00000   233%     -   21s
     0     0   40.00000    0  591   12.00000   40.00000   233%     -   21s
H    0     0                      14.0000000   40.00000   186%     -   37s
     0     0   40.00000    0  399   14.00000   40.00000   186%     -   38s
     0     0   40.00000    0  410   14.00000   40.00000   186%     -   39s
     0     0   40.00000    0  612   14.00000   40.00000   186%     -   50s

Cutting planes:
  Cover: 35
  Clique: 15
  MIR: 133
  StrongCG: 4
  GUB cover: 4
  Zero half: 72
  RLT: 70
  BQP: 3

Explored 1 nodes (70641 simplex iterations) in 50.07 seconds (45.32 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 14 12 11 10 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.000000000000e+01, gap 185.7143%

Wrote result file './lp_solutions/grafo5308.39.sol'

