
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:09:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7419.44.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/grafo7419.44.lp
Reading time = 0.93 seconds
: 468715 rows, 2811 columns, 1408657 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 468715 rows, 2811 columns and 1408657 nonzeros
Model fingerprint: 0x1bef829b
Variable types: 51 continuous, 2760 integer (2760 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 217505 rows and 19 columns
Presolve time: 4.62s
Presolved: 251210 rows, 2792 columns, 756549 nonzeros
Variable types: 0 continuous, 2792 integer (2741 binary)
Root relaxation presolved: 2792 rows, 254002 columns, 759341 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    7.8395918e+02   0.000000e+00   1.111964e+06      7s
   21165    1.1383018e+02   0.000000e+00   6.474569e+05     11s
   38186    7.8309787e+01   0.000000e+00   1.327026e+06     15s
   54029    5.5964621e+01   0.000000e+00   2.399308e+05     20s
   68849    5.5869073e+01   0.000000e+00   4.563114e+05     25s
   84114    5.5796674e+01   0.000000e+00   8.450618e+04     30s
   99240    5.5770901e+01   0.000000e+00   1.316682e+05     35s
  114360    5.5759535e+01   0.000000e+00   2.500049e+05     40s
  128400    5.5754880e+01   0.000000e+00   4.142786e+03     45s
  138708    5.6000000e+01   0.000000e+00   0.000000e+00     49s
  138708    5.6000000e+01   0.000000e+00   0.000000e+00     49s

Root relaxation: objective 5.600000e+01, 138708 iterations, 43.77 seconds (26.63 work units)

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

     0     0   56.00000    0 1384          -   56.00000      -     -   50s
H    0     0                       4.0000000   56.00000  1300%     -   50s

Explored 1 nodes (138755 simplex iterations) in 50.12 seconds (31.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.600000000000e+01, gap 1300.0000%

Wrote result file './lp_solutions/grafo7419.44.sol'

