
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:07:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5987.43.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/grafo5987.43.lp
Reading time = 0.71 seconds
: 381924 rows, 3159 columns, 1148898 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 381924 rows, 3159 columns and 1148898 nonzeros
Model fingerprint: 0xc32f5888
Variable types: 57 continuous, 3102 integer (3102 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]
Presolve removed 161513 rows and 4 columns
Presolve time: 3.71s
Presolved: 220411 rows, 3155 columns, 664897 nonzeros
Variable types: 0 continuous, 3155 integer (3098 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 3139 rows, 223550 columns, 668052 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    1.0843000e+03   0.000000e+00   1.396024e+06      6s
   19783    1.4933820e+02   0.000000e+00   5.438746e+05     10s
   35369    1.1145449e+02   0.000000e+00   4.069230e+05     15s
   48736    7.3966267e+01   0.000000e+00   3.059479e+06     20s
   60909    7.1897468e+01   0.000000e+00   2.481987e+05     25s
   72622    6.6845425e+01   0.000000e+00   3.173011e+05     30s
   84042    6.5805579e+01   0.000000e+00   6.939205e+04     35s
   96286    6.5782842e+01   0.000000e+00   5.289302e+04     40s
  109396    6.5769078e+01   0.000000e+00   3.294641e+04     45s

Root relaxation: time limit, 121784 iterations, 45.38 seconds (25.80 work units)

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

     0     0          -    0         9.00000  447.00000  4867%     -   50s

Explored 1 nodes (121784 simplex iterations) in 50.05 seconds (28.91 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.470000000000e+02, gap 4866.6667%

Wrote result file './lp_solutions/grafo5987.43.sol'

