
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:38:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7709.42.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/grafo7709.42.lp
Reading time = 0.17 seconds
: 108510 rows, 2699 columns, 328072 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 108510 rows, 2699 columns and 328072 nonzeros
Model fingerprint: 0xa28e13f4
Variable types: 54 continuous, 2645 integer (2645 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 20980 rows and 0 columns
Presolve time: 0.62s
Presolved: 87530 rows, 2699 columns, 265617 nonzeros
Variable types: 0 continuous, 2699 integer (2645 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2672 rows, 90202 columns, 268316 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20291    5.5967629e+01   0.000000e+00   7.702825e+04      5s
   39118    5.5943405e+01   0.000000e+00   4.023614e+04     10s
   57317    5.5930988e+01   0.000000e+00   2.148962e+04     15s
   75718    5.5923310e+01   0.000000e+00   3.236032e+03     20s
   94164    5.5920136e+01   0.000000e+00   6.017225e+03     25s
  110265    5.6000000e+01   0.000000e+00   0.000000e+00     29s
  110265    5.6000000e+01   0.000000e+00   0.000000e+00     29s
  110265    5.6000000e+01   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 5.600000e+01, 110265 iterations, 28.77 seconds (26.19 work units)

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

     0     0   56.00000    0 1742   10.00000   56.00000   460%     -   50s

Explored 1 nodes (123183 simplex iterations) in 50.03 seconds (46.78 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 2 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.600000000000e+01, gap 460.0000%

Wrote result file './lp_solutions/grafo7709.42.sol'

