
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:23:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1401.45.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/grafo1401.45.lp
Reading time = 0.20 seconds
: 124876 rows, 2290 columns, 376365 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 124876 rows, 2290 columns and 376365 nonzeros
Model fingerprint: 0x893bdbe1
Variable types: 44 continuous, 2246 integer (2246 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 41628 rows and 18 columns
Presolve time: 0.84s
Presolved: 83248 rows, 2272 columns, 251853 nonzeros
Variable types: 0 continuous, 2272 integer (2228 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2269 rows, 85517 columns, 254125 nonzeros


Root relaxation: objective 4.100000e+01, 24475 iterations, 3.82 seconds (3.46 work units)
Total elapsed time = 11.00s (DegenMoves)

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

     0     0   41.00000    0  531    9.00000   41.00000   356%     -   12s
H    0     0                      12.0000000   41.00000   242%     -   12s
     0     0   41.00000    0  758   12.00000   41.00000   242%     -   21s
     0     0   41.00000    0  720   12.00000   41.00000   242%     -   22s
     0     0   41.00000    0  460   12.00000   41.00000   242%     -   44s
H    0     0                      13.0000000   41.00000   215%     -   45s
     0     0   41.00000    0  502   13.00000   41.00000   215%     -   46s
     0     0          -    0        13.00000   41.00000   215%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 4
  Cover: 43
  Clique: 13
  MIR: 112
  GUB cover: 2
  Zero half: 45
  RLT: 94
  BQP: 1

Explored 1 nodes (60556 simplex iterations) in 50.04 seconds (54.88 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 12 9 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.100000000000e+01, gap 215.3846%

Wrote result file './lp_solutions/grafo1401.45.sol'

