
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:04:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2531.41.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/grafo2531.41.lp
Reading time = 0.74 seconds
: 347352 rows, 2572 columns, 1044376 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 347352 rows, 2572 columns and 1044376 nonzeros
Model fingerprint: 0x025d8e7a
Variable types: 50 continuous, 2522 integer (2522 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 154571 rows and 12 columns
Presolve time: 3.10s
Presolved: 192781 rows, 2560 columns, 580983 nonzeros
Variable types: 0 continuous, 2560 integer (2510 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2552 rows, 195333 columns, 583543 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    4550    1.9396772e+02   0.000000e+00   8.347327e+05      5s
   31790    9.8390134e+01   0.000000e+00   2.275214e+05     11s
   48268    6.3994395e+01   0.000000e+00   5.944310e+04     15s
   64642    5.9906323e+01   0.000000e+00   3.561572e+05     20s
   81454    5.9862019e+01   0.000000e+00   2.932273e+04     25s
   98959    5.9843493e+01   0.000000e+00   7.498818e+03     30s
  115584    5.9835893e+01   0.000000e+00   2.203601e+03     35s
  132209    5.9833014e+01   0.000000e+00   6.315916e+02     40s
  136568    6.0000000e+01   0.000000e+00   0.000000e+00     42s
  136568    6.0000000e+01   0.000000e+00   0.000000e+00     42s
  136568    6.0000000e+01   0.000000e+00   0.000000e+00     42s

Root relaxation: objective 6.000000e+01, 136568 iterations, 38.06 seconds (23.37 work units)

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

     0     0   60.00000    0 1476    8.00000   60.00000   650%     -   50s

Explored 1 nodes (138980 simplex iterations) in 50.08 seconds (33.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 6.000000000000e+01, gap 650.0000%

Wrote result file './lp_solutions/grafo2531.41.sol'

