
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:33:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9982.38.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/grafo9982.38.lp
Reading time = 0.10 seconds
: 61491 rows, 1940 columns, 186043 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 61491 rows, 1940 columns and 186043 nonzeros
Model fingerprint: 0x38e36114
Variable types: 43 continuous, 1897 integer (1897 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 11587 rows and 25 columns
Presolve time: 0.42s
Presolved: 49904 rows, 1915 columns, 151834 nonzeros
Variable types: 0 continuous, 1915 integer (1872 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 29127 rows, 22692 columns, 110280 nonzeros


Root relaxation: objective 3.800000e+01, 1601 iterations, 0.48 seconds (0.44 work units)

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

     0     0   38.00000    0  360    3.00000   38.00000  1167%     -    2s
H    0     0                      10.0000000   38.00000   280%     -    2s
H    0     0                      11.0000000   38.00000   245%     -    2s
H    0     0                      12.0000000   38.00000   217%     -    8s
     0     0   38.00000    0  667   12.00000   38.00000   217%     -    8s
H    0     0                      14.0000000   38.00000   171%     -    8s
     0     0   38.00000    0  641   14.00000   38.00000   171%     -    9s
     0     0   38.00000    0  466   14.00000   38.00000   171%     -   23s
     0     0   38.00000    0  446   14.00000   38.00000   171%     -   23s
H    0     0                      15.0000000   38.00000   153%     -   36s
H    0     0                      16.0000000   38.00000   137%     -   36s
H    0     0                      17.0000000   38.00000   124%     -   36s
     0     0   38.00000    0  472   17.00000   38.00000   124%     -   36s
     0     0   38.00000    0  416   17.00000   38.00000   124%     -   37s
H    0     0                      18.0000000   38.00000   111%     -   46s
     0     0   38.00000    0  359   18.00000   38.00000   111%     -   46s
     0     0   38.00000    0  436   18.00000   38.00000   111%     -   47s
     0     0          -    0        18.00000   38.00000   111%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 24
  Clique: 6
  MIR: 131
  StrongCG: 1
  GUB cover: 3
  Zero half: 53
  RLT: 46

Explored 1 nodes (57326 simplex iterations) in 50.06 seconds (45.06 work units)
Thread count was 8 (of 8 available processors)

Solution count 9: 18 17 16 ... 3

Time limit reached
Best objective 1.800000000000e+01, best bound 3.800000000000e+01, gap 111.1111%

Wrote result file './lp_solutions/grafo9982.38.sol'

