
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:22:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6838.50.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/grafo6838.50.lp
Reading time = 0.21 seconds
: 114612 rows, 2731 columns, 345826 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 114612 rows, 2731 columns and 345826 nonzeros
Model fingerprint: 0xb38d2708
Variable types: 47 continuous, 2684 integer (2684 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 27187 rows and 97 columns
Presolve time: 1.00s
Presolved: 87425 rows, 2634 columns, 264588 nonzeros
Variable types: 0 continuous, 2634 integer (2587 binary)
Root relaxation presolved: 2631 rows, 90056 columns, 267222 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15317    4.7813001e+01   0.000000e+00   3.916562e+04      5s
   33072    4.7779078e+01   0.000000e+00   9.341062e+03     10s
   41598    4.8000000e+01   0.000000e+00   0.000000e+00     13s
   41598    4.8000000e+01   0.000000e+00   0.000000e+00     13s
   41598    4.8000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.800000e+01, 41598 iterations, 11.57 seconds (7.58 work units)
Total elapsed time = 35.51s (DegenMoves)
Total elapsed time = 41.47s (DegenMoves)

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

     0     0   48.00000    0  705          -   48.00000      -     -   44s
H    0     0                       7.0000000   48.00000   586%     -   44s
     0     0          -    0         7.00000   48.00000   586%     -   50s

Cutting planes:
  Gomory: 34
  Cover: 36
  Clique: 10
  MIR: 131
  GUB cover: 6
  Zero half: 18
  RLT: 46
  BQP: 2

Explored 1 nodes (63030 simplex iterations) in 50.02 seconds (38.58 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.800000000000e+01, gap 585.7143%

Wrote result file './lp_solutions/grafo6838.50.sol'

