
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:24:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6257.42.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/grafo6257.42.lp
Reading time = 0.83 seconds
: 368624 rows, 2803 columns, 1108435 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 368624 rows, 2803 columns and 1108435 nonzeros
Model fingerprint: 0xd4654428
Variable types: 52 continuous, 2751 integer (2751 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 162761 rows and 6 columns
Presolve time: 3.56s
Presolved: 205863 rows, 2797 columns, 620569 nonzeros
Variable types: 0 continuous, 2797 integer (2745 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2785 rows, 208648 columns, 623366 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    1162    4.9899564e+02   0.000000e+00   1.595793e+06      5s
   27976    1.0997481e+02   0.000000e+00   5.801591e+05     11s
   42115    8.3495207e+01   0.000000e+00   4.934238e+05     15s
   56277    7.0934052e+01   0.000000e+00   4.953938e+05     20s
   69722    6.8873653e+01   0.000000e+00   1.674451e+05     25s
   85112    6.8838637e+01   0.000000e+00   1.739764e+04     30s
  100419    6.8821733e+01   0.000000e+00   1.469313e+04     35s
  115721    6.8812201e+01   0.000000e+00   1.288247e+04     40s
  130122    6.8807398e+01   0.000000e+00   1.677058e+03     45s

Root relaxation: time limit, 144530 iterations, 45.98 seconds (27.58 work units)

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

     0     0          -    0         8.00000  418.00000  5125%     -   50s

Explored 1 nodes (144530 simplex iterations) in 50.04 seconds (30.55 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.180000000000e+02, gap 5125.0000%

Wrote result file './lp_solutions/grafo6257.42.sol'

