
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:51:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6552.45.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/grafo6552.45.lp
Reading time = 0.15 seconds
: 93102 rows, 2453 columns, 281320 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 93102 rows, 2453 columns and 281320 nonzeros
Model fingerprint: 0x52779b1e
Variable types: 48 continuous, 2405 integer (2405 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 19149 rows and 31 columns
Presolve time: 0.64s
Presolved: 73953 rows, 2422 columns, 224311 nonzeros
Variable types: 0 continuous, 2422 integer (2374 binary)
Root relaxation presolved: 2422 rows, 76375 columns, 226733 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24397    4.1916516e+01   0.000000e+00   3.171268e+03      5s
   35893    4.2000000e+01   0.000000e+00   0.000000e+00      7s
   35893    4.2000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.200000e+01, 35893 iterations, 6.69 seconds (5.63 work units)
Total elapsed time = 16.68s (DegenMoves)
Total elapsed time = 21.83s (DegenMoves)

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

     0     0   42.00000    0  597          -   42.00000      -     -   25s
H    0     0                       6.0000000   42.00000   600%     -   29s
     0     0   42.00000    0  752    6.00000   42.00000   600%     -   42s
H    0     0                       7.0000000   42.00000   500%     -   43s
     0     0   42.00000    0  737    7.00000   42.00000   500%     -   44s

Cutting planes:
  Gomory: 3
  Lift-and-project: 51
  Cover: 6
  Clique: 14
  MIR: 93
  GUB cover: 1
  Zero half: 32
  RLT: 47
  BQP: 3

Explored 1 nodes (66393 simplex iterations) in 50.14 seconds (47.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 6 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.200000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo6552.45.sol'

