
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:56:41 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3206.42.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/grafo3206.42.lp
Reading time = 0.36 seconds
: 203208 rows, 2624 columns, 612004 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 203208 rows, 2624 columns and 612004 nonzeros
Model fingerprint: 0xf2c7e797
Variable types: 51 continuous, 2573 integer (2573 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 75935 rows and 30 columns
Presolve time: 2.19s
Presolved: 127273 rows, 2594 columns, 384702 nonzeros
Variable types: 0 continuous, 2594 integer (2543 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2588 rows, 129861 columns, 387296 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12273    6.7498423e+01   0.000000e+00   2.896001e+05      5s
   29055    5.3857344e+01   0.000000e+00   3.226623e+05     10s
   48225    5.3764949e+01   0.000000e+00   4.422064e+04     15s
   65025    5.3747473e+01   0.000000e+00   1.136501e+04     20s
   81265    5.3742506e+01   0.000000e+00   3.282908e+02     25s
   86322    5.4000000e+01   0.000000e+00   0.000000e+00     27s
   86322    5.4000000e+01   0.000000e+00   0.000000e+00     27s
   86322    5.4000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 5.400000e+01, 86322 iterations, 24.25 seconds (14.60 work units)
Total elapsed time = 48.69s (DegenMoves)

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

     0     0   54.00000    0  757    5.00000   54.00000   980%     -   50s

Explored 1 nodes (99302 simplex iterations) in 50.06 seconds (36.90 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 5 

Time limit reached
Best objective 5.000000000000e+00, best bound 5.400000000000e+01, gap 980.0000%

Wrote result file './lp_solutions/grafo3206.42.sol'

