
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:26:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7106.44.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/grafo7106.44.lp
Reading time = 0.22 seconds
: 134044 rows, 2989 columns, 404913 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 134044 rows, 2989 columns and 404913 nonzeros
Model fingerprint: 0x4312e85e
Variable types: 57 continuous, 2932 integer (2932 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 -0.0000000
Presolve removed 29009 rows and 0 columns
Presolve time: 0.75s
Presolved: 105035 rows, 2989 columns, 318330 nonzeros
Variable types: 0 continuous, 2989 integer (2932 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2953 rows, 107988 columns, 321319 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20238    7.0958216e+01   0.000000e+00   4.613270e+05      5s
   38921    7.0926924e+01   0.000000e+00   2.644335e+04     10s
   56237    7.0917478e+01   0.000000e+00   5.554797e+03     15s
   72261    7.0914722e+01   0.000000e+00   2.049305e+03     20s
   88258    7.0913981e+01   0.000000e+00   1.626044e+03     25s
   95940    7.1000000e+01   0.000000e+00   0.000000e+00     27s
   95940    7.1000000e+01   0.000000e+00   0.000000e+00     27s
   95940    7.1000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 7.100000e+01, 95940 iterations, 26.53 seconds (22.01 work units)

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

     0     0   71.00000    0 1923   12.00000   71.00000   492%     -   50s

Explored 1 nodes (105510 simplex iterations) in 50.04 seconds (43.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 -0 

Time limit reached
Best objective 1.200000000000e+01, best bound 7.100000000000e+01, gap 491.6667%

Wrote result file './lp_solutions/grafo7106.44.sol'

