
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:34:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6137.39.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/grafo6137.39.lp
Reading time = 0.10 seconds
: 60187 rows, 1890 columns, 182064 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 60187 rows, 1890 columns and 182064 nonzeros
Model fingerprint: 0x7843fa0f
Variable types: 42 continuous, 1848 integer (1848 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 11217 rows and 18 columns
Presolve time: 0.37s
Presolved: 48970 rows, 1872 columns, 148714 nonzeros
Variable types: 0 continuous, 1872 integer (1830 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 28351 rows, 22491 columns, 107476 nonzeros


Root relaxation: objective 4.100000e+01, 2878 iterations, 1.15 seconds (1.11 work units)
Total elapsed time = 6.76s (DegenMoves)

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

     0     0   41.00000    0  462    8.00000   41.00000   412%     -    9s
     0     0   41.00000    0  648    8.00000   41.00000   412%     -   15s
     0     0   41.00000    0  613    8.00000   41.00000   412%     -   16s
H    0     0                      10.0000000   41.00000   310%     -   18s
H    0     0                      11.0000000   40.00000   264%     -   37s
H    0     0                      12.0000000   40.00000   233%     -   37s
H    0     0                      13.0000000   40.00000   208%     -   37s
H    0     0                      14.0000000   40.00000   186%     -   37s
H    0     0                      15.0000000   40.00000   167%     -   37s
     0     0   40.00000    0  479   15.00000   40.00000   167%     -   39s
     0     0   40.00000    0  514   15.00000   40.00000   167%     -   41s
     0     0   40.00000    0  620   15.00000   40.00000   167%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 11
  Clique: 12
  MIR: 117
  StrongCG: 2
  Zero half: 61
  RLT: 64

Explored 1 nodes (55300 simplex iterations) in 50.06 seconds (47.70 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 15 14 13 ... 8

Time limit reached
Best objective 1.500000000000e+01, best bound 4.000000000000e+01, gap 166.6667%

Wrote result file './lp_solutions/grafo6137.39.sol'

