
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:46:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7460.45.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/grafo7460.45.lp
Reading time = 0.16 seconds
: 99973 rows, 2808 columns, 302459 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 99973 rows, 2808 columns and 302459 nonzeros
Model fingerprint: 0x51e86371
Variable types: 55 continuous, 2753 integer (2753 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, 6e+01]
Found heuristic solution: objective -0.0000000
Presolve removed 11625 rows and 0 columns
Presolve time: 0.56s
Presolved: 88348 rows, 2808 columns, 268048 nonzeros
Variable types: 0 continuous, 2808 integer (2753 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2754 rows, 91102 columns, 270856 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20314    4.7979807e+01   0.000000e+00   8.819221e+04      5s
   39728    4.7958370e+01   0.000000e+00   6.835669e+04     10s
   58736    4.7948631e+01   0.000000e+00   1.256997e+04     15s
   77744    4.7944911e+01   0.000000e+00   7.871032e+02     20s
   84770    4.8000000e+01   0.000000e+00   0.000000e+00     22s
   84770    4.8000000e+01   0.000000e+00   0.000000e+00     22s
   84770    4.8000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 4.800000e+01, 84770 iterations, 21.36 seconds (17.34 work units)
Total elapsed time = 44.49s (DegenMoves)
Total elapsed time = 46.04s (DegenMoves)

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

     0     0   48.00000    0  749    8.00000   48.00000   500%     -   47s
H    0     0                       9.0000000   48.00000   433%     -   47s

Cutting planes:
  Cover: 58
  MIR: 235
  StrongCG: 1

Explored 1 nodes (106755 simplex iterations) in 50.03 seconds (45.82 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.800000000000e+01, gap 433.3333%

Wrote result file './lp_solutions/grafo7460.45.sol'

