
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:54:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2455.40.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/grafo2455.40.lp
Reading time = 0.32 seconds
: 199784 rows, 2766 columns, 602030 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 199784 rows, 2766 columns and 602030 nonzeros
Model fingerprint: 0x8e486bc8
Variable types: 55 continuous, 2711 integer (2711 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]
Found heuristic solution: objective 1.0000000
Presolve removed 70840 rows and 27 columns
Presolve time: 1.40s
Presolved: 128944 rows, 2739 columns, 389983 nonzeros
Variable types: 0 continuous, 2739 integer (2684 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2730 rows, 131674 columns, 392722 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17121    7.3598028e+01   0.000000e+00   3.446262e+05      5s
   36270    6.5816170e+01   0.000000e+00   2.424822e+05     10s
   56431    6.5761176e+01   0.000000e+00   2.960348e+04     15s
   76015    6.5744356e+01   0.000000e+00   1.941139e+04     20s
   96175    6.5736430e+01   0.000000e+00   4.455772e+03     25s
  114086    6.6000000e+01   0.000000e+00   0.000000e+00     30s
  114086    6.6000000e+01   0.000000e+00   0.000000e+00     30s
  114086    6.6000000e+01   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 6.600000e+01, 114086 iterations, 28.01 seconds (20.83 work units)

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

     0     0   66.00000    0 1612   13.00000   66.00000   408%     -   50s

Explored 1 nodes (123661 simplex iterations) in 50.04 seconds (42.30 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 1 

Time limit reached
Best objective 1.300000000000e+01, best bound 6.600000000000e+01, gap 407.6923%

Wrote result file './lp_solutions/grafo2455.40.sol'

