
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:53:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6628.46.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/grafo6628.46.lp
Reading time = 0.45 seconds
: 256459 rows, 3473 columns, 772887 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 256459 rows, 3473 columns and 772887 nonzeros
Model fingerprint: 0xeec6d482
Variable types: 61 continuous, 3412 integer (3412 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 85911 rows and 29 columns
Presolve time: 2.25s
Presolved: 170548 rows, 3444 columns, 515812 nonzeros
Variable types: 0 continuous, 3444 integer (3383 binary)
Root relaxation presolved: 3441 rows, 173989 columns, 519256 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7868    1.3355065e+02   0.000000e+00   1.579170e+06      5s
   22063    6.3709469e+01   0.000000e+00   4.788956e+05     10s
   33008    6.0621346e+01   0.000000e+00   2.383226e+05     15s
   43906    5.9567275e+01   0.000000e+00   7.511328e+04     20s
   55426    5.9537262e+01   0.000000e+00   2.515018e+04     25s
   65666    5.9524167e+01   0.000000e+00   2.679285e+04     30s
   76546    5.9516781e+01   0.000000e+00   4.246179e+03     35s
   86786    5.9513142e+01   0.000000e+00   3.907197e+03     40s
   97026    5.9511431e+01   0.000000e+00   1.042524e+03     45s
  105930    6.0000000e+01   0.000000e+00   0.000000e+00     50s
  105930    6.0000000e+01   0.000000e+00   0.000000e+00     50s
  105930    6.0000000e+01   0.000000e+00   0.000000e+00     50s

Root relaxation: objective 6.000000e+01, 105930 iterations, 47.08 seconds (27.68 work units)

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

     0     0  postponed    0               -   60.00000      -     -   50s
H    0     0                       4.0000000   60.00000  1400%     -   50s

Explored 1 nodes (105930 simplex iterations) in 50.14 seconds (29.93 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 6.000000000000e+01, gap 1400.0000%

Wrote result file './lp_solutions/grafo6628.46.sol'

