
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:28:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7222.40.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/grafo7222.40.lp
Reading time = 0.16 seconds
: 103390 rows, 2402 columns, 312352 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 103390 rows, 2402 columns and 312352 nonzeros
Model fingerprint: 0x8e6c4fde
Variable types: 51 continuous, 2351 integer (2351 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]
Found heuristic solution: objective 1.0000000
Presolve removed 24607 rows and 33 columns
Presolve time: 0.71s
Presolved: 78783 rows, 2369 columns, 238905 nonzeros
Variable types: 0 continuous, 2369 integer (2318 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2369 rows, 81152 columns, 241274 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21728    5.3748740e+01   0.000000e+00   6.121298e+04      5s
   43556    5.4000000e+01   0.000000e+00   0.000000e+00     10s
   43556    5.4000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.400000e+01, 43556 iterations, 8.82 seconds (7.20 work units)
Total elapsed time = 22.72s (DegenMoves)

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

     0     0   54.00000    0  641   11.00000   54.00000   391%     -   24s
H    0     0                      14.0000000   54.00000   286%     -   24s
     0     0   54.00000    0  982   14.00000   54.00000   286%     -   40s
     0     0   54.00000    0  996   14.00000   54.00000   286%     -   44s
     0     0          -    0        14.00000   54.00000   286%     -   50s

Cutting planes:
  Gomory: 3
  Cover: 9
  Clique: 11
  MIR: 170
  StrongCG: 1
  GUB cover: 1
  Zero half: 74
  RLT: 88
  BQP: 1

Explored 1 nodes (72241 simplex iterations) in 50.02 seconds (49.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 11 1 

Time limit reached
Best objective 1.400000000000e+01, best bound 5.400000000000e+01, gap 285.7143%

Wrote result file './lp_solutions/grafo7222.40.sol'

