
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 19:15:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3911.34.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/grafo3911.34.lp
Reading time = 0.13 seconds
: 82389 rows, 1551 columns, 248312 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 82389 rows, 1551 columns and 248312 nonzeros
Model fingerprint: 0x56f7d3ff
Variable types: 37 continuous, 1514 integer (1514 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 31153 rows and 12 columns
Presolve time: 0.54s
Presolved: 51236 rows, 1539 columns, 155125 nonzeros
Variable types: 0 continuous, 1539 integer (1502 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 1539 rows, 52775 columns, 156664 nonzeros


Root relaxation: objective 4.300000e+01, 3101 iterations, 1.27 seconds (1.70 work units)
Total elapsed time = 10.32s (DegenMoves)

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

     0     0   43.00000    0  563    6.00000   43.00000   617%     -   12s
H    0     0                       8.0000000   43.00000   437%     -   12s
     0     0   43.00000    0  707    8.00000   43.00000   437%     -   21s
     0     0   43.00000    0  715    8.00000   43.00000   437%     -   22s
     0     0   43.00000    0  691    8.00000   43.00000   437%     -   50s

Cutting planes:
  Gomory: 4
  Cover: 8
  Clique: 22
  MIR: 117
  GUB cover: 1
  Zero half: 78
  RLT: 84
  BQP: 1

Explored 1 nodes (44492 simplex iterations) in 50.07 seconds (52.83 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 6 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo3911.34.sol'

