
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:14:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3434.45.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/grafo3434.45.lp
Reading time = 0.33 seconds
: 173475 rows, 2789 columns, 522873 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 173475 rows, 2789 columns and 522873 nonzeros
Model fingerprint: 0x18041e22
Variable types: 52 continuous, 2737 integer (2737 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 1.0000000
Presolve removed 55255 rows and 19 columns
Presolve time: 1.64s
Presolved: 118220 rows, 2770 columns, 357532 nonzeros
Variable types: 0 continuous, 2770 integer (2718 binary)
Found heuristic solution: objective 14.0000000
Root relaxation presolved: 2767 rows, 120987 columns, 360302 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13656    6.2937428e+01   0.000000e+00   2.000230e+05      5s
   27517    5.3815894e+01   0.000000e+00   5.190801e+04     10s
   41644    5.3749141e+01   0.000000e+00   6.901849e+04     15s
   56764    5.3733175e+01   0.000000e+00   6.425657e+04     20s
   72388    5.3726988e+01   0.000000e+00   1.702364e+03     25s
   82631    5.4000000e+01   0.000000e+00   0.000000e+00     29s
   82631    5.4000000e+01   0.000000e+00   0.000000e+00     29s
   82631    5.4000000e+01   0.000000e+00   0.000000e+00     29s

Root relaxation: objective 5.400000e+01, 82631 iterations, 27.02 seconds (15.22 work units)

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

     0     0   54.00000    0 1466   14.00000   54.00000   286%     -   50s

Explored 1 nodes (92875 simplex iterations) in 50.04 seconds (34.41 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 14 1 

Time limit reached
Best objective 1.400000000000e+01, best bound 5.400000000000e+01, gap 285.7143%

Wrote result file './lp_solutions/grafo3434.45.sol'

