
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 01:20:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1879.21.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/grafo1879.21.lp
Reading time = 0.19 seconds
: 114604 rows, 884 columns, 344482 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 114604 rows, 884 columns and 344482 nonzeros
Model fingerprint: 0x7ff2a34d
Variable types: 27 continuous, 857 integer (857 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]
Found heuristic solution: objective 1.0000000
Presolve removed 57753 rows and 3 columns
Presolve time: 0.74s
Presolved: 56851 rows, 881 columns, 171424 nonzeros
Variable types: 0 continuous, 881 integer (854 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 880 rows, 57731 columns, 172305 nonzeros


Root relaxation: objective 3.600000e+01, 1493 iterations, 0.56 seconds (0.75 work units)
Total elapsed time = 5.21s (DegenMoves)

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

     0     0   36.00000    0  316    8.00000   36.00000   350%     -    8s
H    0     0                       9.0000000   36.00000   300%     -    8s
     0     0   36.00000    0  446    9.00000   36.00000   300%     -   12s
     0     0   36.00000    0  436    9.00000   36.00000   300%     -   13s
     0     0   36.00000    0  347    9.00000   36.00000   300%     -   21s
     0     0   36.00000    0  331    9.00000   36.00000   300%     -   22s
     0     0   36.00000    0  361    9.00000   36.00000   300%     -   32s
     0     0   36.00000    0  288    9.00000   36.00000   300%     -   32s
H    0     0                      10.0000000   36.00000   260%     -   33s
     0     0   36.00000    0  377   10.00000   36.00000   260%     -   41s
     0     0   36.00000    0  371   10.00000   36.00000   260%     -   41s
     0     0   36.00000    0  374   10.00000   36.00000   260%     -   47s
     0     0   36.00000    0  361   10.00000   36.00000   260%     -   48s
     0     0   36.00000    0  354   10.00000   36.00000   260%     -   50s

Cutting planes:
  Cover: 7
  Clique: 20
  MIR: 69
  StrongCG: 2
  Zero half: 78
  RLT: 64
  BQP: 1

Explored 1 nodes (37316 simplex iterations) in 50.05 seconds (51.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 10 9 8 1 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.600000000000e+01, gap 260.0000%

Wrote result file './lp_solutions/grafo1879.21.sol'

