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

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3151.45.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/grafo3151.45.lp
Reading time = 0.16 seconds
: 101737 rows, 2651 columns, 307426 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 101737 rows, 2651 columns and 307426 nonzeros
Model fingerprint: 0x7d748dc4
Variable types: 51 continuous, 2600 integer (2600 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 18423 rows and 1 columns
Presolve time: 0.58s
Presolved: 83314 rows, 2650 columns, 252670 nonzeros
Variable types: 0 continuous, 2650 integer (2599 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2620 rows, 85934 columns, 255320 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22672    5.0943391e+01   0.000000e+00   6.682377e+04      5s
   43847    5.0928983e+01   0.000000e+00   1.254899e+03     10s
   59110    5.1000000e+01   0.000000e+00   0.000000e+00     14s
   59110    5.1000000e+01   0.000000e+00   0.000000e+00     14s
   59110    5.1000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 5.100000e+01, 59110 iterations, 13.41 seconds (12.16 work units)
Total elapsed time = 38.32s (DegenMoves)
Total elapsed time = 45.06s (DegenMoves)

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

     0     0   51.00000    0 1080    4.00000   51.00000  1175%     -   50s

Explored 1 nodes (85233 simplex iterations) in 50.04 seconds (56.51 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.100000000000e+01, gap 1175.0000%

Wrote result file './lp_solutions/grafo3151.45.sol'

