
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:50:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6549.45.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/grafo6549.45.lp
Reading time = 0.17 seconds
: 105912 rows, 2689 columns, 320033 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 105912 rows, 2689 columns and 320033 nonzeros
Model fingerprint: 0x11173762
Variable types: 51 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 4.0000000
Presolve removed 20580 rows and 17 columns
Presolve time: 0.67s
Presolved: 85332 rows, 2672 columns, 258805 nonzeros
Variable types: 0 continuous, 2672 integer (2621 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2662 rows, 87994 columns, 261477 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20822    5.2642547e+01   0.000000e+00   1.041036e+04      5s
   42388    5.2626667e+01   0.000000e+00   4.908825e+02     10s
   48232    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   48232    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   48232    5.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.300000e+01, 48232 iterations, 10.58 seconds (8.70 work units)
Total elapsed time = 22.90s (DegenMoves)

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

     0     0   53.00000    0  578   12.00000   53.00000   342%     -   24s
H    0     0                      13.0000000   53.00000   308%     -   24s
     0     0   53.00000    0  906   13.00000   53.00000   308%     -   42s
     0     0   53.00000    0  881   13.00000   53.00000   308%     -   43s
     0     0          -    0        13.00000   53.00000   308%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 24
  Cover: 6
  Clique: 13
  MIR: 106
  Zero half: 55
  RLT: 46
  BQP: 1

Explored 1 nodes (72079 simplex iterations) in 50.02 seconds (45.95 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 12 4 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.300000000000e+01, gap 307.6923%

Wrote result file './lp_solutions/grafo6549.45.sol'

