
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:44:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2412.50.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/grafo2412.50.lp
Reading time = 0.30 seconds
: 116400 rows, 2785 columns, 351298 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 116400 rows, 2785 columns and 351298 nonzeros
Model fingerprint: 0x81e3dc28
Variable types: 50 continuous, 2735 integer (2735 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 -0.0000000
Presolve removed 21766 rows and 0 columns
Presolve time: 0.89s
Presolved: 94634 rows, 2785 columns, 286312 nonzeros
Variable types: 0 continuous, 2785 integer (2735 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2746 rows, 97380 columns, 289097 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19118    4.7925378e+01   0.000000e+00   5.233268e+04      5s
   39359    4.7899207e+01   0.000000e+00   2.798231e+03     10s
   56786    4.7894253e+01   0.000000e+00   4.605179e+02     15s
   61703    4.8000000e+01   0.000000e+00   0.000000e+00     17s
   61703    4.8000000e+01   0.000000e+00   0.000000e+00     17s
   61703    4.8000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 4.800000e+01, 61703 iterations, 15.57 seconds (11.67 work units)
Total elapsed time = 32.01s (DegenMoves)

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

     0     0   48.00000    0  791    9.00000   48.00000   433%     -   50s

Explored 1 nodes (87157 simplex iterations) in 50.03 seconds (55.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.800000000000e+01, gap 433.3333%

Wrote result file './lp_solutions/grafo2412.50.sol'

