
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:07:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6950.49.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/grafo6950.49.lp
Reading time = 0.37 seconds
: 191473 rows, 3227 columns, 577274 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 191473 rows, 3227 columns and 577274 nonzeros
Model fingerprint: 0xd68b6c6e
Variable types: 56 continuous, 3171 integer (3171 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 57597 rows and 30 columns
Presolve time: 1.92s
Presolved: 133876 rows, 3197 columns, 405110 nonzeros
Variable types: 0 continuous, 3197 integer (3141 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 3191 rows, 137067 columns, 408307 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11809    7.6949527e+01   0.000000e+00   1.377005e+06      5s
   24856    5.6795170e+01   0.000000e+00   9.346207e+04     10s
   38702    5.6702066e+01   0.000000e+00   2.787612e+04     15s
   52002    5.6677480e+01   0.000000e+00   1.111913e+04     20s
   64238    5.6669007e+01   0.000000e+00   9.626372e+03     25s
   76474    5.6665982e+01   0.000000e+00   5.742259e+02     30s
   80453    5.7000000e+01   0.000000e+00   0.000000e+00     32s
   80453    5.7000000e+01   0.000000e+00   0.000000e+00     32s
   80453    5.7000000e+01   0.000000e+00   0.000000e+00     32s

Root relaxation: objective 5.700000e+01, 80453 iterations, 29.63 seconds (17.08 work units)

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

     0     0   57.00000    0 1582    5.00000   57.00000  1040%     -   50s

Explored 1 nodes (88637 simplex iterations) in 50.05 seconds (33.41 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/grafo6950.49.sol'

