
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:40:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2757.38.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/grafo2757.38.lp
Reading time = 0.35 seconds
: 214337 rows, 2235 columns, 645043 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 214337 rows, 2235 columns and 645043 nonzeros
Model fingerprint: 0x39d66ebb
Variable types: 48 continuous, 2187 integer (2187 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 87780 rows and 36 columns
Presolve time: 1.63s
Presolved: 126557 rows, 2199 columns, 382059 nonzeros
Variable types: 0 continuous, 2199 integer (2151 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2199 rows, 128756 columns, 384258 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19107    6.1923582e+01   0.000000e+00   1.612798e+05      5s
   42953    4.5843810e+01   0.000000e+00   4.160104e+05     10s
   67882    4.5800933e+01   0.000000e+00   2.742714e+03     15s
   83312    4.6000000e+01   0.000000e+00   0.000000e+00     18s
   83312    4.6000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 4.600000e+01, 83312 iterations, 16.55 seconds (12.36 work units)
Total elapsed time = 44.30s (DegenMoves)

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

     0     0   46.00000    0  986    8.00000   46.00000   475%     -   50s

Explored 1 nodes (99525 simplex iterations) in 50.04 seconds (51.71 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.600000000000e+01, gap 475.0000%

Wrote result file './lp_solutions/grafo2757.38.sol'

