
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:18:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4950.50.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/grafo4950.50.lp
Reading time = 0.34 seconds
: 182563 rows, 3452 columns, 550849 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 182563 rows, 3452 columns and 550849 nonzeros
Model fingerprint: 0x5155ebfb
Variable types: 58 continuous, 3394 integer (3394 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 49242 rows and 40 columns
Presolve time: 1.37s
Presolved: 133321 rows, 3412 columns, 403727 nonzeros
Variable types: 0 continuous, 3412 integer (3354 binary)
Root relaxation presolved: 3379 rows, 136700 columns, 407139 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11055    6.1995943e+01   0.000000e+00   4.725241e+05      5s
   22626    5.5924994e+01   0.000000e+00   1.858242e+05     10s
   33675    5.5902062e+01   0.000000e+00   6.919958e+04     15s
   44913    5.5890051e+01   0.000000e+00   3.754299e+04     20s
   55691    5.5882291e+01   0.000000e+00   8.075363e+04     25s
   65866    5.5877201e+01   0.000000e+00   5.939907e+04     30s
   76513    5.5873904e+01   0.000000e+00   3.875144e+03     35s
   87161    5.5872181e+01   0.000000e+00   3.315783e+02     40s
   97851    5.5871900e+01   0.000000e+00   1.356649e+01     45s
  103549    5.6000000e+01   0.000000e+00   0.000000e+00     48s
  103549    5.6000000e+01   0.000000e+00   0.000000e+00     48s
  103549    5.6000000e+01   0.000000e+00   0.000000e+00     48s

Root relaxation: objective 5.600000e+01, 103549 iterations, 46.29 seconds (35.31 work units)

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

     0     0   56.00000    0 1660          -   56.00000      -     -   50s
H    0     0                       7.0000000   56.00000   700%     -   50s

Explored 1 nodes (103931 simplex iterations) in 50.10 seconds (38.63 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.600000000000e+01, gap 700.0000%

Wrote result file './lp_solutions/grafo4950.50.sol'

