
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:44:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5296.44.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/grafo5296.44.lp
Reading time = 0.32 seconds
: 167985 rows, 2815 columns, 506509 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 167985 rows, 2815 columns and 506509 nonzeros
Model fingerprint: 0x55b8bc72
Variable types: 53 continuous, 2762 integer (2762 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]
Found heuristic solution: objective 2.0000000
Presolve removed 56553 rows and 23 columns
Presolve time: 1.46s
Presolved: 111432 rows, 2792 columns, 337399 nonzeros
Variable types: 0 continuous, 2792 integer (2739 binary)
Found heuristic solution: objective 14.0000000
Root relaxation presolved: 2792 rows, 114224 columns, 340191 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13982    7.1923567e+01   0.000000e+00   1.799075e+05      5s
   28416    6.1780111e+01   0.000000e+00   2.049547e+05     10s
   43392    6.1717257e+01   0.000000e+00   2.255161e+04     15s
   57900    6.1702069e+01   0.000000e+00   6.332416e+03     20s
   71940    6.1697274e+01   0.000000e+00   1.366713e+03     25s
   77854    6.2000000e+01   0.000000e+00   0.000000e+00     27s
   77854    6.2000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 6.200000e+01, 77854 iterations, 25.72 seconds (14.63 work units)

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

     0     0   62.00000    0 1533   14.00000   62.00000   343%     -   50s

Explored 1 nodes (91403 simplex iterations) in 50.06 seconds (34.43 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 14 2 

Time limit reached
Best objective 1.400000000000e+01, best bound 6.200000000000e+01, gap 342.8571%

Wrote result file './lp_solutions/grafo5296.44.sol'

