
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:01:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3339.42.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/grafo3339.42.lp
Reading time = 0.54 seconds
: 247607 rows, 2455 columns, 745003 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 247607 rows, 2455 columns and 745003 nonzeros
Model fingerprint: 0xd4ef6b90
Variable types: 49 continuous, 2406 integer (2406 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 100572 rows and 18 columns
Presolve time: 2.16s
Presolved: 147035 rows, 2437 columns, 443560 nonzeros
Variable types: 0 continuous, 2437 integer (2388 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2434 rows, 149469 columns, 445997 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12037    9.7741296e+01   0.000000e+00   2.032582e+05      5s
   31865    4.6912505e+01   0.000000e+00   1.668489e+05     10s
   50009    4.6808468e+01   0.000000e+00   2.794296e+04     15s
   67689    4.6783645e+01   0.000000e+00   4.663345e+03     20s
   86729    4.6776410e+01   0.000000e+00   1.216391e+03     25s
   97401    4.7000000e+01   0.000000e+00   0.000000e+00     28s
   97401    4.7000000e+01   0.000000e+00   0.000000e+00     28s
   97401    4.7000000e+01   0.000000e+00   0.000000e+00     28s

Root relaxation: objective 4.700000e+01, 97401 iterations, 25.36 seconds (15.14 work units)

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

     0     0   47.00000    0 1389    5.00000   47.00000   840%     -   50s

Explored 1 nodes (108649 simplex iterations) in 50.07 seconds (37.03 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 5 

Time limit reached
Best objective 5.000000000000e+00, best bound 4.700000000000e+01, gap 840.0000%

Wrote result file './lp_solutions/grafo3339.42.sol'

