
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 05:55:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5551.37.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/grafo5551.37.lp
Reading time = 0.20 seconds
: 122137 rows, 1661 columns, 367632 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 122137 rows, 1661 columns and 367632 nonzeros
Model fingerprint: 0x6a286d15
Variable types: 37 continuous, 1624 integer (1624 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 4.0000000
Presolve removed 49268 rows and 7 columns
Presolve time: 0.82s
Presolved: 72869 rows, 1654 columns, 219979 nonzeros
Variable types: 0 continuous, 1654 integer (1617 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1651 rows, 74520 columns, 221633 nonzeros


Root relaxation: objective 3.800000e+01, 1751 iterations, 0.54 seconds (0.65 work units)

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

     0     0   38.00000    0  467    7.00000   38.00000   443%     -    5s
H    0     0                       9.0000000   38.00000   322%     -    6s
     0     0   38.00000    0  868    9.00000   38.00000   322%     -   18s
H    0     0                      11.0000000   38.00000   245%     -   19s
     0     0   38.00000    0  778   11.00000   38.00000   245%     -   21s
     0     0   38.00000    0  749   11.00000   38.00000   245%     -   44s
     0     0   38.00000    0  635   11.00000   38.00000   245%     -   46s
     0     0          -    0        11.00000   38.00000   245%     -   50s

Cutting planes:
  Cover: 5
  Clique: 37
  MIR: 108
  StrongCG: 2
  Zero half: 51
  RLT: 68
  BQP: 2

Explored 1 nodes (29907 simplex iterations) in 50.07 seconds (47.69 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 11 9 7 4 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.800000000000e+01, gap 245.4545%

Wrote result file './lp_solutions/grafo5551.37.sol'

