
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:08:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3827.42.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/grafo3827.42.lp
Reading time = 0.43 seconds
: 231632 rows, 2522 columns, 697170 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 231632 rows, 2522 columns and 697170 nonzeros
Model fingerprint: 0xa52b1528
Variable types: 49 continuous, 2473 integer (2473 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]
Found heuristic solution: objective 5.0000000
Presolve removed 96438 rows and 12 columns
Presolve time: 1.93s
Presolved: 135194 rows, 2510 columns, 408275 nonzeros
Variable types: 0 continuous, 2510 integer (2461 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2506 rows, 137700 columns, 410785 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13840    6.6955940e+01   0.000000e+00   1.588582e+06      5s
   31126    4.7819895e+01   0.000000e+00   1.895766e+05     10s
   48874    4.7760820e+01   0.000000e+00   1.133657e+04     15s
   66622    4.7745722e+01   0.000000e+00   1.499266e+03     20s
   84370    4.7741919e+01   0.000000e+00   2.603630e+02     25s
   88116    4.8000000e+01   0.000000e+00   0.000000e+00     26s
   88116    4.8000000e+01   0.000000e+00   0.000000e+00     26s
   88116    4.8000000e+01   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 4.800000e+01, 88116 iterations, 24.14 seconds (14.30 work units)
Total elapsed time = 48.12s (DegenMoves)

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

     0     0   48.00000    0  587    7.00000   48.00000   586%     -   50s

Explored 1 nodes (100510 simplex iterations) in 50.25 seconds (38.56 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 5 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.800000000000e+01, gap 585.7143%

Wrote result file './lp_solutions/grafo3827.42.sol'

