
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:39:50 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7583.42.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/grafo7583.42.lp
Reading time = 0.19 seconds
: 120119 rows, 2720 columns, 362899 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 120119 rows, 2720 columns and 362899 nonzeros
Model fingerprint: 0x0f9a7f54
Variable types: 54 continuous, 2666 integer (2666 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 3.0000000
Presolve removed 27940 rows and 32 columns
Presolve time: 0.83s
Presolved: 92179 rows, 2688 columns, 279652 nonzeros
Variable types: 0 continuous, 2688 integer (2634 binary)
Found heuristic solution: objective 16.0000000
Root relaxation presolved: 2685 rows, 94864 columns, 282340 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21729    5.9839139e+01   0.000000e+00   3.298839e+04      5s
   42134    5.9824532e+01   0.000000e+00   2.742187e+03     10s
   49687    6.0000000e+01   0.000000e+00   0.000000e+00     12s
   49687    6.0000000e+01   0.000000e+00   0.000000e+00     12s
   49687    6.0000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 6.000000e+01, 49687 iterations, 11.07 seconds (9.11 work units)
Total elapsed time = 31.26s (DegenMoves)
Total elapsed time = 37.75s (DegenMoves)

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

     0     0   60.00000    0  742   16.00000   60.00000   275%     -   50s

Explored 1 nodes (79786 simplex iterations) in 50.02 seconds (60.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 16 3 

Time limit reached
Best objective 1.600000000000e+01, best bound 6.000000000000e+01, gap 275.0000%

Wrote result file './lp_solutions/grafo7583.42.sol'

