
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:43:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3661.46.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/grafo3661.46.lp
Reading time = 0.37 seconds
: 194144 rows, 2471 columns, 584376 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 194144 rows, 2471 columns and 584376 nonzeros
Model fingerprint: 0xe50538db
Variable types: 46 continuous, 2425 integer (2425 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 71652 rows and 12 columns
Presolve time: 1.68s
Presolved: 122492 rows, 2459 columns, 369791 nonzeros
Variable types: 0 continuous, 2459 integer (2413 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2450 rows, 124942 columns, 372250 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14486    3.9943506e+01   0.000000e+00   1.326301e+05      5s
   32891    3.9785503e+01   0.000000e+00   9.184973e+04     10s
   51970    3.9749138e+01   0.000000e+00   1.882647e+04     15s
   70466    3.9739367e+01   0.000000e+00   9.979274e+03     20s
   83175    4.0000000e+01   0.000000e+00   0.000000e+00     23s
   83175    4.0000000e+01   0.000000e+00   0.000000e+00     23s
   83175    4.0000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 4.000000e+01, 83175 iterations, 21.36 seconds (12.51 work units)
Total elapsed time = 36.55s (DegenMoves)
Total elapsed time = 40.38s (DegenMoves)

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

     0     0   40.00000    0  306   10.00000   40.00000   300%     -   41s
H    0     0                      13.0000000   40.00000   208%     -   41s
H    0     0                      16.0000000   40.00000   150%     -   41s
     0     0   40.00000    0  477   16.00000   40.00000   150%     -   48s
H    0     0                      18.0000000   40.00000   122%     -   49s
     0     0   40.00000    0  513   18.00000   40.00000   122%     -   49s

Cutting planes:
  Gomory: 5
  Cover: 29
  Clique: 19
  MIR: 58
  Zero half: 9
  RLT: 26
  BQP: 2

Explored 1 nodes (98516 simplex iterations) in 50.06 seconds (40.01 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 18 16 13 10 

Time limit reached
Best objective 1.800000000000e+01, best bound 4.000000000000e+01, gap 122.2222%

Wrote result file './lp_solutions/grafo3661.46.sol'

