
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:42:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4017.44.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/grafo4017.44.lp
Reading time = 0.27 seconds
: 147715 rows, 3134 columns, 446226 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 147715 rows, 3134 columns and 446226 nonzeros
Model fingerprint: 0xba2a29e4
Variable types: 59 continuous, 3075 integer (3075 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 1.0000000
Presolve removed 31893 rows and 0 columns
Presolve time: 1.10s
Presolved: 115822 rows, 3134 columns, 351097 nonzeros
Variable types: 0 continuous, 3134 integer (3075 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 3107 rows, 118929 columns, 354231 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15551    6.7725428e+01   0.000000e+00   6.222247e+05      5s
   29050    6.2976619e+01   0.000000e+00   8.097578e+04     10s
   41832    6.2958578e+01   0.000000e+00   2.289251e+04     15s
   54148    6.2947904e+01   0.000000e+00   2.916786e+04     20s
   66010    6.2940557e+01   0.000000e+00   1.857534e+04     25s
   77920    6.2935510e+01   0.000000e+00   6.137479e+04     30s
   89438    6.2931929e+01   0.000000e+00   2.829595e+04     35s
  101048    6.2929454e+01   0.000000e+00   7.201510e+03     40s
  113133    6.2927769e+01   0.000000e+00   1.487898e+04     45s

Root relaxation: time limit, 124231 iterations, 48.71 seconds (31.24 work units)

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

     0     0          -    0        11.00000  286.00000  2500%     -   50s

Explored 1 nodes (124231 simplex iterations) in 50.03 seconds (32.43 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 1 

Time limit reached
Best objective 1.100000000000e+01, best bound 2.860000000000e+02, gap 2500.0000%

Wrote result file './lp_solutions/grafo4017.44.sol'

