
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:20:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6924.48.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/grafo6924.48.lp
Reading time = 0.26 seconds
: 155635 rows, 3083 columns, 469646 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 155635 rows, 3083 columns and 469646 nonzeros
Model fingerprint: 0x4a726e68
Variable types: 56 continuous, 3027 integer (3027 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]
Found heuristic solution: objective 2.0000000
Presolve removed 37096 rows and 0 columns
Presolve time: 1.10s
Presolved: 118539 rows, 3083 columns, 358705 nonzeros
Variable types: 0 continuous, 3083 integer (3027 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 3044 rows, 121583 columns, 361788 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15164    5.9813656e+01   0.000000e+00   1.965409e+05      5s
   31790    5.6703425e+01   0.000000e+00   9.012921e+04     10s
   48144    5.6671720e+01   0.000000e+00   5.077948e+04     15s
   63536    5.6660415e+01   0.000000e+00   1.170256e+03     20s
   78447    5.6657103e+01   0.000000e+00   2.454692e+03     25s
   83772    5.7000000e+01   0.000000e+00   0.000000e+00     27s
   83772    5.7000000e+01   0.000000e+00   0.000000e+00     27s
   83772    5.7000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 5.700000e+01, 83772 iterations, 25.61 seconds (18.08 work units)

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

     0     0   57.00000    0 1728   12.00000   57.00000   375%     -   50s

Explored 1 nodes (94558 simplex iterations) in 50.04 seconds (39.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 2 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.700000000000e+01, gap 375.0000%

Wrote result file './lp_solutions/grafo6924.48.sol'

