
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 17:39:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1760.28.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/grafo1760.28.lp
Reading time = 0.22 seconds
: 95716 rows, 1362 columns, 288275 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 95716 rows, 1362 columns and 288275 nonzeros
Model fingerprint: 0xe703c2ad
Variable types: 37 continuous, 1325 integer (1325 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 -0.0000000
Presolve removed 41078 rows and 24 columns
Presolve time: 0.87s
Presolved: 54638 rows, 1338 columns, 165322 nonzeros
Variable types: 0 continuous, 1338 integer (1301 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1338 rows, 55976 columns, 166660 nonzeros


Root relaxation: objective 4.100000e+01, 1417 iterations, 0.47 seconds (0.43 work units)
Total elapsed time = 5.16s (DegenMoves)

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

     0     0   41.00000    0  248    7.00000   41.00000   486%     -    5s
H    0     0                       9.0000000   41.00000   356%     -    5s
     0     0   41.00000    0  588    9.00000   41.00000   356%     -   14s
     0     0   41.00000    0  546    9.00000   41.00000   356%     -   15s
H    0     0                      10.0000000   41.00000   310%     -   21s
     0     0   41.00000    0  570   10.00000   41.00000   310%     -   50s

Cutting planes:
  Gomory: 8
  Lift-and-project: 29
  Cover: 21
  Clique: 21
  MIR: 136
  GUB cover: 2
  Zero half: 51
  RLT: 62
  BQP: 1

Explored 1 nodes (28758 simplex iterations) in 50.06 seconds (37.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 10 9 7 -0 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.100000000000e+01, gap 310.0000%

Wrote result file './lp_solutions/grafo1760.28.sol'

