
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:41:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1571.43.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/grafo1571.43.lp
Reading time = 0.16 seconds
: 101234 rows, 2459 columns, 305901 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 101234 rows, 2459 columns and 305901 nonzeros
Model fingerprint: 0x2026f3ae
Variable types: 49 continuous, 2410 integer (2410 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 24105 rows and 36 columns
Presolve time: 0.64s
Presolved: 77129 rows, 2423 columns, 233985 nonzeros
Variable types: 0 continuous, 2423 integer (2374 binary)
Root relaxation presolved: 2423 rows, 79552 columns, 236408 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23298    4.4706866e+01   0.000000e+00   6.201167e+03      5s
   36715    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   36715    4.5000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.500000e+01, 36715 iterations, 6.96 seconds (5.90 work units)
Total elapsed time = 15.42s (DegenMoves)

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

     0     0   45.00000    0  496          -   45.00000      -     -   16s
H    0     0                      11.0000000   45.00000   309%     -   19s
     0     0   45.00000    0  696   11.00000   45.00000   309%     -   27s
     0     0   45.00000    0  622   11.00000   45.00000   309%     -   29s
     0     0   45.00000    0  526   11.00000   45.00000   309%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 33
  Cover: 19
  Clique: 17
  MIR: 63
  StrongCG: 1
  Zero half: 20
  RLT: 48
  BQP: 4

Explored 1 nodes (69805 simplex iterations) in 50.03 seconds (48.69 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 11 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.500000000000e+01, gap 309.0909%

Wrote result file './lp_solutions/grafo1571.43.sol'

