
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:22:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6911.44.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/grafo6911.44.lp
Reading time = 0.16 seconds
: 104752 rows, 2690 columns, 316597 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 104752 rows, 2690 columns and 316597 nonzeros
Model fingerprint: 0x4dcf5fd4
Variable types: 52 continuous, 2638 integer (2638 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 2.0000000
Presolve removed 19838 rows and 1 columns
Presolve time: 0.58s
Presolved: 84914 rows, 2689 columns, 257669 nonzeros
Variable types: 0 continuous, 2689 integer (2637 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2644 rows, 87558 columns, 260358 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20967    5.2695298e+01   0.000000e+00   4.671386e+04      5s
   42527    5.2668939e+01   0.000000e+00   1.541438e+05     10s
   54806    5.3000000e+01   0.000000e+00   0.000000e+00     13s
   54806    5.3000000e+01   0.000000e+00   0.000000e+00     13s
   54806    5.3000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 5.300000e+01, 54806 iterations, 12.32 seconds (10.67 work units)
Total elapsed time = 33.71s (DegenMoves)
Total elapsed time = 35.25s (DegenMoves)

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

     0     0   53.00000    0  699   10.00000   53.00000   430%     -   36s
H    0     0                      12.0000000   53.00000   342%     -   36s
     0     0          -    0        12.00000   53.00000   342%     -   50s

Cutting planes:
  Gomory: 47
  Cover: 45
  Clique: 7
  MIR: 125
  Zero half: 47
  RLT: 49

Explored 1 nodes (79010 simplex iterations) in 50.02 seconds (45.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 2 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.300000000000e+01, gap 341.6667%

Wrote result file './lp_solutions/grafo6911.44.sol'

