
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:36:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4011.48.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/grafo4011.48.lp
Reading time = 0.25 seconds
: 137059 rows, 2939 columns, 413672 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 137059 rows, 2939 columns and 413672 nonzeros
Model fingerprint: 0x834245fb
Variable types: 53 continuous, 2886 integer (2886 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 31091 rows and 34 columns
Presolve time: 1.24s
Presolved: 105968 rows, 2905 columns, 320918 nonzeros
Variable types: 0 continuous, 2905 integer (2852 binary)
Root relaxation presolved: 2905 rows, 108873 columns, 323823 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15579    5.0960711e+01   0.000000e+00   2.736778e+05      5s
   32026    5.0934831e+01   0.000000e+00   3.855616e+04     10s
   46678    5.0927614e+01   0.000000e+00   7.265903e+03     15s
   59998    5.0924952e+01   0.000000e+00   5.335694e+02     20s
   68619    5.1000000e+01   0.000000e+00   0.000000e+00     23s
   68619    5.1000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 5.100000e+01, 68619 iterations, 21.84 seconds (14.02 work units)

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

     0     0   51.00000    0 1694          -   51.00000      -     -   50s
H    0     0                       3.0000000   51.00000  1600%     -   50s

Explored 1 nodes (81239 simplex iterations) in 50.06 seconds (36.55 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 3 

Time limit reached
Best objective 3.000000000000e+00, best bound 5.100000000000e+01, gap 1600.0000%

Wrote result file './lp_solutions/grafo4011.48.sol'

