
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:36:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7260.45.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/grafo7260.45.lp
Reading time = 0.93 seconds
: 404892 rows, 2936 columns, 1217340 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 404892 rows, 2936 columns and 1217340 nonzeros
Model fingerprint: 0x5e10ec36
Variable types: 52 continuous, 2884 integer (2884 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 186752 rows and 8 columns
Presolve time: 3.56s
Presolved: 218140 rows, 2928 columns, 657626 nonzeros
Variable types: 0 continuous, 2928 integer (2876 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2924 rows, 221064 columns, 660554 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    6.8292000e+02   0.000000e+00   1.300498e+06      5s
   26032    7.1997659e+01   0.000000e+00   3.295128e+05     10s
   41660    5.5896111e+01   0.000000e+00   3.858348e+05     15s
   56885    5.5793929e+01   0.000000e+00   1.133867e+05     20s
   71707    5.5749927e+01   0.000000e+00   1.342723e+05     25s
   87433    5.5732801e+01   0.000000e+00   2.166449e+04     30s
  102233    5.5722895e+01   0.000000e+00   1.745621e+05     35s
  117958    5.5717139e+01   0.000000e+00   3.404873e+03     40s
  134634    5.5715648e+01   0.000000e+00   4.201474e+01     45s
  139631    5.6000000e+01   0.000000e+00   0.000000e+00     47s
  139631    5.6000000e+01   0.000000e+00   0.000000e+00     47s
  139631    5.6000000e+01   0.000000e+00   0.000000e+00     47s

Root relaxation: objective 5.600000e+01, 139631 iterations, 42.66 seconds (25.89 work units)

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

     0     0   56.00000    0 1610    6.00000   56.00000   833%     -   50s

Explored 1 nodes (140133 simplex iterations) in 50.11 seconds (32.12 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.600000000000e+01, gap 833.3333%

Wrote result file './lp_solutions/grafo7260.45.sol'

