
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:36:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6672.48.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/grafo6672.48.lp
Reading time = 0.19 seconds
: 118145 rows, 2976 columns, 356999 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 118145 rows, 2976 columns and 356999 nonzeros
Model fingerprint: 0x19990504
Variable types: 55 continuous, 2921 integer (2921 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 -0.0000000
Presolve removed 18465 rows and 0 columns
Presolve time: 0.67s
Presolved: 99680 rows, 2976 columns, 302032 nonzeros
Variable types: 0 continuous, 2976 integer (2921 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2934 rows, 102614 columns, 305008 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19922    5.5953387e+01   0.000000e+00   3.003325e+04      5s
   39459    5.5923870e+01   0.000000e+00   2.797030e+04     10s
   57367    5.5914680e+01   0.000000e+00   4.281126e+03     15s
   74868    5.5911290e+01   0.000000e+00   7.308777e+02     20s
   82688    5.6000000e+01   0.000000e+00   0.000000e+00     22s
   82688    5.6000000e+01   0.000000e+00   0.000000e+00     22s
   82688    5.6000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.600000e+01, 82688 iterations, 21.52 seconds (17.78 work units)
Total elapsed time = 46.98s (DegenMoves)

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

     0     0   56.00000    0 1094    6.00000   56.00000   833%     -   50s

Explored 1 nodes (103410 simplex iterations) in 50.03 seconds (47.60 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 -0 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.600000000000e+01, gap 833.3333%

Wrote result file './lp_solutions/grafo6672.48.sol'

