
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:14:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5661.48.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/grafo5661.48.lp
Reading time = 0.16 seconds
: 95881 rows, 2599 columns, 289664 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 95881 rows, 2599 columns and 289664 nonzeros
Model fingerprint: 0xb0ee5d61
Variable types: 48 continuous, 2551 integer (2551 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 15718 rows and 8 columns
Presolve time: 0.70s
Presolved: 80163 rows, 2591 columns, 242800 nonzeros
Variable types: 0 continuous, 2591 integer (2543 binary)
Root relaxation presolved: 2583 rows, 82746 columns, 245391 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18336    4.8726770e+01   0.000000e+00   4.369923e+04      5s
   38291    4.8681973e+01   0.000000e+00   1.605081e+05     10s
   56841    4.8669282e+01   0.000000e+00   5.688640e+04     15s
   76441    4.8664991e+01   0.000000e+00   1.322653e+04     20s
   88136    4.9000000e+01   0.000000e+00   0.000000e+00     23s
   88136    4.9000000e+01   0.000000e+00   0.000000e+00     23s
   88136    4.9000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 4.900000e+01, 88136 iterations, 22.13 seconds (14.42 work units)
Total elapsed time = 38.79s (DegenMoves)
Total elapsed time = 43.83s (DegenMoves)

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

     0     0   49.00000    0  671          -   49.00000      -     -   45s
H    0     0                       8.0000000   49.00000   513%     -   48s
     0     0          -    0         8.00000   49.00000   513%     -   50s

Cutting planes:
  Gomory: 38
  Cover: 39
  Clique: 4
  MIR: 153
  Zero half: 66
  RLT: 38
  BQP: 1

Explored 1 nodes (110481 simplex iterations) in 50.02 seconds (41.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.900000000000e+01, gap 512.5000%

Wrote result file './lp_solutions/grafo5661.48.sol'

