
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:17:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6709.47.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/grafo6709.47.lp
Reading time = 0.15 seconds
: 94311 rows, 2558 columns, 284938 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 94311 rows, 2558 columns and 284938 nonzeros
Model fingerprint: 0x63cb4501
Variable types: 49 continuous, 2509 integer (2509 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 1.0000000
Presolve removed 14492 rows and 1 columns
Presolve time: 0.54s
Presolved: 79819 rows, 2557 columns, 241862 nonzeros
Variable types: 0 continuous, 2557 integer (2508 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2512 rows, 82331 columns, 244419 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23301    3.8741334e+01   0.000000e+00   3.643514e+04      5s
   41406    3.9000000e+01   0.000000e+00   0.000000e+00      9s
   41406    3.9000000e+01   0.000000e+00   0.000000e+00      9s
   41406    3.9000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 3.900000e+01, 41406 iterations, 8.53 seconds (7.69 work units)
Total elapsed time = 21.94s (DegenMoves)
Total elapsed time = 27.64s (DegenMoves)

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

     0     0   39.00000    0  514    8.00000   39.00000   388%     -   30s
H    0     0                      12.0000000   39.00000   225%     -   30s
     0     0   39.00000    0  908   12.00000   39.00000   225%     -   42s
     0     0   39.00000    0  855   12.00000   39.00000   225%     -   43s
     0     0          -    0        12.00000   39.00000   225%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 1
  Cover: 10
  Clique: 4
  MIR: 137
  Zero half: 43
  RLT: 64

Explored 1 nodes (74505 simplex iterations) in 50.01 seconds (54.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 8 1 

Time limit reached
Best objective 1.200000000000e+01, best bound 3.900000000000e+01, gap 225.0000%

Wrote result file './lp_solutions/grafo6709.47.sol'

