
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:06:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3816.42.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/grafo3816.42.lp
Reading time = 0.83 seconds
: 437474 rows, 3088 columns, 1315457 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 437474 rows, 3088 columns and 1315457 nonzeros
Model fingerprint: 0xc712491b
Variable types: 57 continuous, 3031 integer (3031 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 189585 rows and 22 columns
Presolve time: 4.60s
Presolved: 247889 rows, 3066 columns, 747270 nonzeros
Variable types: 0 continuous, 3066 integer (3009 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 3054 rows, 250943 columns, 750336 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    8.0738000e+02   0.000000e+00   9.721887e+05      6s
   18618    1.2496227e+02   0.000000e+00   2.469538e+06     10s
   33135    9.1892232e+01   0.000000e+00   5.995367e+05     15s
   48274    7.8358502e+01   0.000000e+00   4.200688e+05     20s
   60015    6.7815218e+01   0.000000e+00   1.776672e+05     25s
   73197    6.4763243e+01   0.000000e+00   2.053547e+05     30s
   86251    6.4723075e+01   0.000000e+00   3.015695e+04     35s
   99238    6.4702818e+01   0.000000e+00   5.521967e+04     40s
  112225    6.4688438e+01   0.000000e+00   2.714821e+05     45s

Root relaxation: time limit, 124913 iterations, 44.58 seconds (26.05 work units)

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

     0     0          -    0         6.00000  419.00000  6883%     -   50s

Explored 1 nodes (124913 simplex iterations) in 50.03 seconds (29.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.190000000000e+02, gap 6883.3333%

Wrote result file './lp_solutions/grafo3816.42.sol'

