
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:34:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7296.42.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/grafo7296.42.lp
Reading time = 0.21 seconds
: 132098 rows, 2599 columns, 398638 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 132098 rows, 2599 columns and 398638 nonzeros
Model fingerprint: 0xd23243df
Variable types: 52 continuous, 2547 integer (2547 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 36869 rows and 40 columns
Presolve time: 0.96s
Presolved: 95229 rows, 2559 columns, 288571 nonzeros
Variable types: 0 continuous, 2559 integer (2507 binary)
Root relaxation presolved: 2556 rows, 97785 columns, 291130 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18719    5.1703232e+01   0.000000e+00   9.522950e+04      5s
   39726    5.1659539e+01   0.000000e+00   9.372308e+03     10s
   59886    5.1651562e+01   0.000000e+00   4.822207e+03     15s
   72990    5.2000000e+01   0.000000e+00   0.000000e+00     18s
   72990    5.2000000e+01   0.000000e+00   0.000000e+00     18s
   72990    5.2000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.200000e+01, 72990 iterations, 17.18 seconds (13.52 work units)
Total elapsed time = 38.37s (DegenMoves)
Total elapsed time = 44.17s (DegenMoves)
Total elapsed time = 49.47s (DegenMoves)

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

     0     0   52.00000    0  851          -   52.00000      -     -   50s
H    0     0                       2.0000000   52.00000  2500%     -   50s

Explored 1 nodes (96053 simplex iterations) in 50.05 seconds (55.63 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 2 

Time limit reached
Best objective 2.000000000000e+00, best bound 5.200000000000e+01, gap 2500.0000%

Wrote result file './lp_solutions/grafo7296.42.sol'

