
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:09:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7568.38.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/grafo7568.38.lp
Reading time = 0.31 seconds
: 192111 rows, 2570 columns, 578898 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 192111 rows, 2570 columns and 578898 nonzeros
Model fingerprint: 0xe8ef5fb5
Variable types: 53 continuous, 2517 integer (2517 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]
Presolve removed 75935 rows and 22 columns
Presolve time: 1.34s
Presolved: 116176 rows, 2548 columns, 351664 nonzeros
Variable types: 0 continuous, 2548 integer (2495 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2545 rows, 118721 columns, 354212 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17078    6.8135539e+01   0.000000e+00   9.018222e+05      5s
   38089    5.6951229e+01   0.000000e+00   3.590555e+04     10s
   58629    5.6935677e+01   0.000000e+00   4.745352e+04     15s
   79279    5.6929458e+01   0.000000e+00   4.625834e+03     20s
   99923    5.6926837e+01   0.000000e+00   9.477835e+02     25s
  109119    5.7000000e+01   0.000000e+00   0.000000e+00     27s
  109119    5.7000000e+01   0.000000e+00   0.000000e+00     27s
  109119    5.7000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 5.700000e+01, 109119 iterations, 25.81 seconds (19.97 work units)

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

     0     0   57.00000    0 1725    5.00000   57.00000  1040%     -   50s

Explored 1 nodes (120267 simplex iterations) in 50.04 seconds (43.03 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 5 

Time limit reached
Best objective 5.000000000000e+00, best bound 5.700000000000e+01, gap 1040.0000%

Wrote result file './lp_solutions/grafo7568.38.sol'

