
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:02:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6756.38.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/grafo6756.38.lp
Reading time = 0.60 seconds
: 371102 rows, 2232 columns, 1115254 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 371102 rows, 2232 columns and 1115254 nonzeros
Model fingerprint: 0x8a20a5ad
Variable types: 45 continuous, 2187 integer (2187 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 173704 rows and 8 columns
Presolve time: 2.92s
Presolved: 197398 rows, 2224 columns, 594484 nonzeros
Variable types: 0 continuous, 2224 integer (2179 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2220 rows, 199618 columns, 596708 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8374    1.4094519e+02   0.000000e+00   1.855945e+06      5s
   37025    5.7846619e+01   0.000000e+00   1.194378e+05     10s
   61229    5.7771993e+01   0.000000e+00   2.618887e+04     15s
   88248    5.7746101e+01   0.000000e+00   1.671218e+04     20s
  115981    5.7741617e+01   0.000000e+00   2.244073e+00     25s
  116459    5.8000000e+01   0.000000e+00   0.000000e+00     25s
  116459    5.8000000e+01   0.000000e+00   0.000000e+00     25s
  116459    5.8000000e+01   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 5.800000e+01, 116459 iterations, 21.84 seconds (15.55 work units)
Total elapsed time = 48.91s (DegenMoves)

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

     0     0   58.00000    0  678    8.00000   58.00000   625%     -   50s

Explored 1 nodes (126631 simplex iterations) in 50.07 seconds (45.41 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.800000000000e+01, gap 625.0000%

Wrote result file './lp_solutions/grafo6756.38.sol'

