
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:23:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6548.46.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/grafo6548.46.lp
Reading time = 0.32 seconds
: 190108 rows, 2983 columns, 573091 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 190108 rows, 2983 columns and 573091 nonzeros
Model fingerprint: 0xd247224e
Variable types: 55 continuous, 2928 integer (2928 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, 6e+01]
Presolve removed 62199 rows and 30 columns
Presolve time: 1.59s
Presolved: 127909 rows, 2953 columns, 386997 nonzeros
Variable types: 0 continuous, 2953 integer (2898 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2950 rows, 130859 columns, 389950 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16608    6.4493326e+01   0.000000e+00   2.059622e+05      5s
   34969    5.3719328e+01   0.000000e+00   4.010160e+04     10s
   53100    5.3684640e+01   0.000000e+00   5.555453e+03     15s
   70712    5.3676467e+01   0.000000e+00   3.076231e+03     20s
   80440    5.4000000e+01   0.000000e+00   0.000000e+00     23s
   80440    5.4000000e+01   0.000000e+00   0.000000e+00     23s
   80440    5.4000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 5.400000e+01, 80440 iterations, 21.13 seconds (16.76 work units)
Total elapsed time = 46.32s (DegenMoves)

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

     0     0   54.00000    0  778    8.00000   54.00000   575%     -   50s

Explored 1 nodes (96537 simplex iterations) in 50.05 seconds (49.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.400000000000e+01, gap 575.0000%

Wrote result file './lp_solutions/grafo6548.46.sol'

