
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:04:30 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7218.46.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/grafo7218.46.lp
Reading time = 0.13 seconds
: 78335 rows, 2536 columns, 237093 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 78335 rows, 2536 columns and 237093 nonzeros
Model fingerprint: 0x89407ec1
Variable types: 50 continuous, 2486 integer (2486 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 5857 rows and 40 columns
Presolve time: 0.56s
Presolved: 72478 rows, 2496 columns, 219900 nonzeros
Variable types: 0 continuous, 2496 integer (2446 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2496 rows, 74974 columns, 222396 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21976    4.1924356e+01   0.000000e+00   1.755596e+04      5s
   42397    4.1911742e+01   0.000000e+00   2.666009e+03     10s
   54148    4.2000000e+01   0.000000e+00   0.000000e+00     13s
   54148    4.2000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.200000e+01, 54148 iterations, 12.17 seconds (10.35 work units)
Total elapsed time = 26.40s (DegenMoves)

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

     0     0   42.00000    0  678   11.00000   42.00000   282%     -   27s
H    0     0                      12.0000000   42.00000   250%     -   45s
     0     0   41.00000    0  981   12.00000   41.00000   242%     -   46s
     0     0   41.00000    0  896   12.00000   41.00000   242%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 4
  MIR: 40
  Zero half: 2
  RLT: 24

Explored 1 nodes (79722 simplex iterations) in 50.28 seconds (41.16 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 11 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.100000000000e+01, gap 241.6667%

Wrote result file './lp_solutions/grafo7218.46.sol'

