
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:36:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7610.42.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/grafo7610.42.lp
Reading time = 0.13 seconds
: 85034 rows, 2294 columns, 257012 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 85034 rows, 2294 columns and 257012 nonzeros
Model fingerprint: 0x81c5d495
Variable types: 47 continuous, 2247 integer (2247 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 16943 rows and 27 columns
Presolve time: 0.58s
Presolved: 68091 rows, 2267 columns, 206614 nonzeros
Variable types: 0 continuous, 2267 integer (2220 binary)
Root relaxation presolved: 2267 rows, 70358 columns, 208881 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27386    4.5963817e+01   0.000000e+00   1.903463e+03      5s
   40090    4.6000000e+01   0.000000e+00   0.000000e+00      8s
   40090    4.6000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.600000e+01, 40090 iterations, 6.80 seconds (5.73 work units)
Total elapsed time = 16.62s (DegenMoves)
Total elapsed time = 23.96s (DegenMoves)

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

     0     0   46.00000    0  511          -   46.00000      -     -   25s
H    0     0                       7.0000000   46.00000   557%     -   25s
H    0     0                      10.0000000   46.00000   360%     -   25s
H    0     0                      11.0000000   46.00000   318%     -   27s
H    0     0                      14.0000000   46.00000   229%     -   27s
H    0     0                      15.0000000   46.00000   207%     -   27s
     0     0   46.00000    0  823   15.00000   46.00000   207%     -   35s
     0     0   46.00000    0  820   15.00000   46.00000   207%     -   36s
H    0     0                      17.0000000   46.00000   171%     -   41s
     0     0   46.00000    0  843   17.00000   46.00000   171%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 27
  Cover: 8
  Clique: 7
  MIR: 112
  Zero half: 47
  RLT: 50

Explored 1 nodes (75486 simplex iterations) in 50.11 seconds (48.55 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 17 15 14 ... 7

Time limit reached
Best objective 1.700000000000e+01, best bound 4.600000000000e+01, gap 170.5882%

Wrote result file './lp_solutions/grafo7610.42.sol'

