
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:43:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3962.39.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/grafo3962.39.lp
Reading time = 0.66 seconds
: 398477 rows, 2348 columns, 1197525 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 398477 rows, 2348 columns and 1197525 nonzeros
Model fingerprint: 0x005f9445
Variable types: 46 continuous, 2302 integer (2302 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 185354 rows and 22 columns
Presolve time: 3.46s
Presolved: 213123 rows, 2326 columns, 641929 nonzeros
Variable types: 0 continuous, 2326 integer (2280 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2326 rows, 215449 columns, 644255 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    4395    1.6123161e+02   0.000000e+00   1.615442e+06      5s
   39178    4.6972337e+01   0.000000e+00   1.175458e+06     10s
   61866    4.5835215e+01   0.000000e+00   7.264334e+04     15s
   86843    4.5794067e+01   0.000000e+00   1.990672e+04     20s
  111629    4.5781589e+01   0.000000e+00   6.358147e+03     25s
  131311    4.6000000e+01   0.000000e+00   0.000000e+00     29s
  131311    4.6000000e+01   0.000000e+00   0.000000e+00     29s

Root relaxation: objective 4.600000e+01, 131311 iterations, 25.09 seconds (18.49 work units)
Total elapsed time = 49.54s (DegenMoves)

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

     0     0   46.00000    0  479    7.00000   46.00000   557%     -   50s

Explored 1 nodes (140351 simplex iterations) in 50.06 seconds (44.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.600000000000e+01, gap 557.1429%

Wrote result file './lp_solutions/grafo3962.39.sol'

