
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:11:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7162.44.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/grafo7162.44.lp
Reading time = 0.23 seconds
: 148221 rows, 2769 columns, 447170 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 148221 rows, 2769 columns and 447170 nonzeros
Model fingerprint: 0xd660591d
Variable types: 53 continuous, 2716 integer (2716 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 41753 rows and 22 columns
Presolve time: 1.10s
Presolved: 106468 rows, 2747 columns, 322381 nonzeros
Variable types: 0 continuous, 2747 integer (2694 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2741 rows, 109209 columns, 325128 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16971    5.3817409e+01   0.000000e+00   7.684679e+04      5s
   38522    5.3725530e+01   0.000000e+00   2.955828e+04     10s
   57710    5.3715637e+01   0.000000e+00   5.509995e+01     15s
   61101    5.4000000e+01   0.000000e+00   0.000000e+00     16s
   61101    5.4000000e+01   0.000000e+00   0.000000e+00     16s
   61101    5.4000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.400000e+01, 61101 iterations, 14.73 seconds (11.67 work units)
Total elapsed time = 35.90s (DegenMoves)
Total elapsed time = 46.27s (DegenMoves)

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

     0     0   54.00000    0  747    7.00000   54.00000   671%     -   50s

Explored 1 nodes (87444 simplex iterations) in 50.05 seconds (57.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.400000000000e+01, gap 671.4286%

Wrote result file './lp_solutions/grafo7162.44.sol'

