
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:25:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6179.45.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/grafo6179.45.lp
Reading time = 0.23 seconds
: 126864 rows, 2635 columns, 382810 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 126864 rows, 2635 columns and 382810 nonzeros
Model fingerprint: 0xb20b4740
Variable types: 49 continuous, 2586 integer (2586 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]
Presolve removed 43647 rows and 48 columns
Presolve time: 0.89s
Presolved: 83217 rows, 2587 columns, 252422 nonzeros
Variable types: 0 continuous, 2587 integer (2538 binary)
Root relaxation presolved: 2565 rows, 85782 columns, 255009 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16550    4.6926257e+01   0.000000e+00   5.935317e+04      5s
   34260    4.6902877e+01   0.000000e+00   9.061539e+02     10s
   43985    4.7000000e+01   0.000000e+00   0.000000e+00     13s
   43985    4.7000000e+01   0.000000e+00   0.000000e+00     13s
   43985    4.7000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.700000e+01, 43985 iterations, 11.86 seconds (7.11 work units)
Total elapsed time = 25.77s (DegenMoves)

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

     0     0   47.00000    0  568          -   47.00000      -     -   28s
H    0     0                       6.0000000   47.00000   683%     -   30s
     0     0   47.00000    0  912    6.00000   47.00000   683%     -   46s
H    0     0                      15.0000000   47.00000   213%     -   47s
     0     0   47.00000    0  830   15.00000   47.00000   213%     -   48s

Cutting planes:
  Gomory: 3
  Cover: 18
  Clique: 21
  MIR: 158
  GUB cover: 2
  Zero half: 7
  RLT: 20
  BQP: 2

Explored 1 nodes (67390 simplex iterations) in 50.03 seconds (38.44 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 15 6 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.700000000000e+01, gap 213.3333%

Wrote result file './lp_solutions/grafo6179.45.sol'

