
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:30:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7530.44.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/grafo7530.44.lp
Reading time = 0.21 seconds
: 136295 rows, 2957 columns, 411719 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 136295 rows, 2957 columns and 411719 nonzeros
Model fingerprint: 0xf4d206c6
Variable types: 57 continuous, 2900 integer (2900 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 29538 rows and 2 columns
Presolve time: 0.79s
Presolved: 106757 rows, 2955 columns, 323516 nonzeros
Variable types: 0 continuous, 2955 integer (2898 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2919 rows, 109676 columns, 326471 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19079    6.0991879e+01   0.000000e+00   1.505000e+05      5s
   36978    5.9962705e+01   0.000000e+00   1.430501e+05     10s
   55185    5.9949378e+01   0.000000e+00   2.231434e+04     15s
   72501    5.9941383e+01   0.000000e+00   3.017872e+04     20s
   89817    5.9936131e+01   0.000000e+00   7.629069e+04     25s
  106689    5.9931968e+01   0.000000e+00   6.962807e+03     30s
  124005    5.9929107e+01   0.000000e+00   2.486595e+03     35s
  140877    5.9927823e+01   0.000000e+00   3.512872e+02     40s
  153759    6.0000000e+01   0.000000e+00   0.000000e+00     44s
  153759    6.0000000e+01   0.000000e+00   0.000000e+00     44s
  153759    6.0000000e+01   0.000000e+00   0.000000e+00     44s

Root relaxation: objective 6.000000e+01, 153759 iterations, 42.90 seconds (35.47 work units)

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

     0     0   60.00000    0 1860    7.00000   60.00000   757%     -   50s

Explored 1 nodes (156003 simplex iterations) in 50.03 seconds (42.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 6.000000000000e+01, gap 757.1429%

Wrote result file './lp_solutions/grafo7530.44.sol'

