
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:55:50 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3175.42.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/grafo3175.42.lp
Reading time = 0.70 seconds
: 358651 rows, 2767 columns, 1078501 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 358651 rows, 2767 columns and 1078501 nonzeros
Model fingerprint: 0x7dc93bbd
Variable types: 52 continuous, 2715 integer (2715 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 156760 rows and 25 columns
Presolve time: 3.36s
Presolved: 201891 rows, 2742 columns, 608563 nonzeros
Variable types: 0 continuous, 2742 integer (2690 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2739 rows, 204630 columns, 611305 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    4686    1.6729367e+02   0.000000e+00   2.338671e+07      5s
   28755    1.0148546e+02   0.000000e+00   1.047257e+08     10s
   44320    7.7471709e+01   0.000000e+00   1.347763e+05     15s
   58939    6.1866205e+01   0.000000e+00   1.542499e+05     20s
   74372    5.9802975e+01   0.000000e+00   2.120898e+05     25s
   89672    5.9775246e+01   0.000000e+00   1.540389e+04     30s
  104972    5.9763976e+01   0.000000e+00   3.359377e+03     35s
  120272    5.9759550e+01   0.000000e+00   5.469173e+02     40s
  135572    5.9758560e+01   0.000000e+00   7.532579e-02     45s
  135942    6.0000000e+01   0.000000e+00   0.000000e+00     45s
  135942    6.0000000e+01   0.000000e+00   0.000000e+00     45s
  135942    6.0000000e+01   0.000000e+00   0.000000e+00     45s

Root relaxation: objective 6.000000e+01, 135942 iterations, 41.66 seconds (25.64 work units)

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

     0     0   60.00000    0 1597    9.00000   60.00000   567%     -   50s

Explored 1 nodes (136924 simplex iterations) in 50.10 seconds (33.02 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.000000000000e+01, gap 566.6667%

Wrote result file './lp_solutions/grafo3175.42.sol'

