
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:26:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2913.40.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/grafo2913.40.lp
Reading time = 0.82 seconds
: 329840 rows, 2750 columns, 992185 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 329840 rows, 2750 columns and 992185 nonzeros
Model fingerprint: 0x3eea25c8
Variable types: 54 continuous, 2696 integer (2696 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 140435 rows and 11 columns
Presolve time: 3.75s
Presolved: 189405 rows, 2739 columns, 571202 nonzeros
Variable types: 0 continuous, 2739 integer (2685 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2728 rows, 192133 columns, 573941 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    7.0034000e+02   0.000000e+00   1.172665e+06      6s
   23529    9.3829821e+01   0.000000e+00   8.709796e+05     11s
   34754    8.4763904e+01   0.000000e+00   6.572007e+05     15s
   45707    6.6950241e+01   0.000000e+00   4.985741e+05     20s
   60343    6.5863527e+01   0.000000e+00   1.915972e+05     25s
   73725    6.4817033e+01   0.000000e+00   3.759198e+04     30s
   86973    6.4791483e+01   0.000000e+00   1.496501e+04     35s
  101879    6.4780689e+01   0.000000e+00   4.921907e+03     40s
  115955    6.4775108e+01   0.000000e+00   1.388297e+04     45s

Root relaxation: time limit, 129267 iterations, 45.48 seconds (24.24 work units)

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

     0     0          -    0         7.00000  345.00000  4829%     -   50s

Explored 1 nodes (129267 simplex iterations) in 50.04 seconds (27.03 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 3.450000000000e+02, gap 4828.5714%

Wrote result file './lp_solutions/grafo2913.40.sol'

