
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:17:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5894.39.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/grafo5894.39.lp
Reading time = 0.22 seconds
: 136589 rows, 2534 columns, 412158 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 136589 rows, 2534 columns and 412158 nonzeros
Model fingerprint: 0x33e2314c
Variable types: 52 continuous, 2482 integer (2482 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 2.0000000
Presolve removed 41952 rows and 7 columns
Presolve time: 0.90s
Presolved: 94637 rows, 2527 columns, 286744 nonzeros
Variable types: 0 continuous, 2527 integer (2475 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2509 rows, 97146 columns, 289271 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19119    6.2736592e+01   0.000000e+00   1.067765e+05      5s
   41256    6.2653741e+01   0.000000e+00   3.435045e+04     10s
   61588    6.2641952e+01   0.000000e+00   1.776832e+03     15s
   64433    6.3000000e+01   0.000000e+00   0.000000e+00     16s
   64433    6.3000000e+01   0.000000e+00   0.000000e+00     16s
   64433    6.3000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 6.300000e+01, 64433 iterations, 14.72 seconds (11.39 work units)
Total elapsed time = 32.17s (DegenMoves)

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

     0     0   63.00000    0  961    9.00000   63.00000   600%     -   50s

Explored 1 nodes (89023 simplex iterations) in 50.03 seconds (59.98 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 2 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.300000000000e+01, gap 600.0000%

Wrote result file './lp_solutions/grafo5894.39.sol'

