
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 08:00:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6919.39.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/grafo6919.39.lp
Reading time = 0.48 seconds
: 295930 rows, 2809 columns, 890649 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 295930 rows, 2809 columns and 890649 nonzeros
Model fingerprint: 0xb06bfc35
Variable types: 56 continuous, 2753 integer (2753 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, 6e+01]
Presolve removed 121685 rows and 23 columns
Presolve time: 2.21s
Presolved: 174245 rows, 2786 columns, 525950 nonzeros
Variable types: 0 continuous, 2786 integer (2730 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2786 rows, 177031 columns, 528736 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13073    9.9863811e+01   0.000000e+00   5.812496e+06      5s
   34161    7.0511700e+01   0.000000e+00   1.694664e+05     10s
   52625    6.4757915e+01   0.000000e+00   1.105638e+05     15s
   70769    6.4718593e+01   0.000000e+00   1.815866e+04     20s
   88913    6.4704289e+01   0.000000e+00   9.130896e+03     25s
  107057    6.4698969e+01   0.000000e+00   5.062369e+02     30s
  117148    6.5000000e+01   0.000000e+00   0.000000e+00     33s
  117148    6.5000000e+01   0.000000e+00   0.000000e+00     33s

Root relaxation: objective 6.500000e+01, 117148 iterations, 30.36 seconds (22.56 work units)

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

     0     0   65.00000    0 1488    9.00000   65.00000   622%     -   50s

Explored 1 nodes (123222 simplex iterations) in 50.06 seconds (42.26 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.500000000000e+01, gap 622.2222%

Wrote result file './lp_solutions/grafo6919.39.sol'

