
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:32:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4012.49.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/grafo4012.49.lp
Reading time = 0.26 seconds
: 149962 rows, 3519 columns, 453292 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 149962 rows, 3519 columns and 453292 nonzeros
Model fingerprint: 0x9b5b5994
Variable types: 62 continuous, 3457 integer (3457 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 21430 rows and 0 columns
Presolve time: 0.99s
Presolved: 128532 rows, 3519 columns, 389539 nonzeros
Variable types: 0 continuous, 3519 integer (3457 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 3471 rows, 132003 columns, 393058 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14678    5.9963401e+01   0.000000e+00   1.321116e+05      5s
   26691    5.9938295e+01   0.000000e+00   1.233959e+05     10s
   39171    5.9923450e+01   0.000000e+00   1.586711e+05     15s
   51171    5.9915060e+01   0.000000e+00   1.501002e+04     20s
   63205    5.9908843e+01   0.000000e+00   3.012945e+04     25s
   75323    5.9904553e+01   0.000000e+00   2.115640e+03     30s
   86570    5.9902464e+01   0.000000e+00   5.015301e+03     35s
   97311    5.9901626e+01   0.000000e+00   2.239992e+03     40s
  108831    5.9901302e+01   0.000000e+00   1.060264e+02     45s
  113149    6.0000000e+01   0.000000e+00   0.000000e+00     47s
  113149    6.0000000e+01   0.000000e+00   0.000000e+00     47s
  113149    6.0000000e+01   0.000000e+00   0.000000e+00     47s

Root relaxation: objective 6.000000e+01, 113149 iterations, 45.87 seconds (37.16 work units)

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

     0     0   60.00000    0 2059    8.00000   60.00000   650%     -   50s

Explored 1 nodes (113818 simplex iterations) in 50.05 seconds (41.14 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 6.000000000000e+01, gap 650.0000%

Wrote result file './lp_solutions/grafo4012.49.sol'

