
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:49:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7734.45.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/grafo7734.45.lp
Reading time = 0.13 seconds
: 81652 rows, 2513 columns, 247067 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 81652 rows, 2513 columns and 247067 nonzeros
Model fingerprint: 0x155fba5c
Variable types: 50 continuous, 2463 integer (2463 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 8433 rows and 1 columns
Presolve time: 0.45s
Presolved: 73219 rows, 2512 columns, 222143 nonzeros
Variable types: 0 continuous, 2512 integer (2462 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2479 rows, 75698 columns, 224655 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23545    4.2939996e+01   0.000000e+00   2.059415e+03      5s
   42149    4.3000000e+01   0.000000e+00   0.000000e+00      9s
   42149    4.3000000e+01   0.000000e+00   0.000000e+00      9s
   42149    4.3000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.300000e+01, 42149 iterations, 8.71 seconds (7.36 work units)
Total elapsed time = 18.52s (DegenMoves)

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

     0     0   43.00000    0  432    6.00000   43.00000   617%     -   19s
H    0     0                       8.0000000   43.00000   438%     -   19s
H    0     0                       9.0000000   43.00000   378%     -   20s
     0     0   43.00000    0  813    9.00000   43.00000   378%     -   30s
     0     0   43.00000    0  790    9.00000   43.00000   378%     -   32s
     0     0   43.00000    0  834    9.00000   43.00000   378%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 32
  Cover: 5
  Clique: 6
  MIR: 108
  Zero half: 4
  RLT: 44
  BQP: 3

Explored 1 nodes (73513 simplex iterations) in 50.10 seconds (43.01 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.300000000000e+01, gap 377.7778%

Wrote result file './lp_solutions/grafo7734.45.sol'

