
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:05:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3774.41.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/grafo3774.41.lp
Reading time = 0.12 seconds
: 79309 rows, 1803 columns, 239148 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 79309 rows, 1803 columns and 239148 nonzeros
Model fingerprint: 0xc3e4ba19
Variable types: 37 continuous, 1766 integer (1766 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 25048 rows and 9 columns
Presolve time: 0.48s
Presolved: 54261 rows, 1794 columns, 164353 nonzeros
Variable types: 0 continuous, 1794 integer (1757 binary)
Root relaxation presolved: 1789 rows, 56050 columns, 166147 nonzeros


Root relaxation: objective 3.500000e+01, 1996 iterations, 0.37 seconds (0.36 work units)
Total elapsed time = 5.76s (DegenMoves)

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

     0     0   35.00000    0  436          -   35.00000      -     -    6s
H    0     0                       6.0000000   35.00000   483%     -    7s
H    0     0                      10.0000000   35.00000   250%     -    7s
H    0     0                      12.0000000   35.00000   192%     -   11s
H    0     0                      13.0000000   35.00000   169%     -   11s
     0     0   35.00000    0  594   13.00000   35.00000   169%     -   11s
     0     0   35.00000    0  549   13.00000   35.00000   169%     -   11s
     0     0   35.00000    0  341   13.00000   35.00000   169%     -   20s
     0     0   35.00000    0  358   13.00000   35.00000   169%     -   20s
H    0     0                      14.0000000   35.00000   150%     -   36s
H    0     0                      15.0000000   35.00000   133%     -   36s
     0     0   35.00000    0  399   15.00000   35.00000   133%     -   36s
     0     0   35.00000    0  389   15.00000   35.00000   133%     -   36s
     0     0   35.00000    0  266   15.00000   35.00000   133%     -   44s
     0     0   35.00000    0  299   15.00000   35.00000   133%     -   44s
     0     0   35.00000    0  364   15.00000   35.00000   133%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 21
  Clique: 14
  MIR: 167
  StrongCG: 2
  GUB cover: 1
  Zero half: 48
  RLT: 58
  BQP: 2

Explored 1 nodes (56942 simplex iterations) in 50.08 seconds (48.84 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 15 14 13 ... 6

Time limit reached
Best objective 1.500000000000e+01, best bound 3.500000000000e+01, gap 133.3333%

Wrote result file './lp_solutions/grafo3774.41.sol'

