
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:37:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2285.38.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/grafo2285.38.lp
Reading time = 0.24 seconds
: 148433 rows, 2178 columns, 447237 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 148433 rows, 2178 columns and 447237 nonzeros
Model fingerprint: 0x321131b4
Variable types: 46 continuous, 2132 integer (2132 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 3.0000000
Presolve removed 55264 rows and 8 columns
Presolve time: 1.06s
Presolved: 93169 rows, 2170 columns, 281912 nonzeros
Variable types: 0 continuous, 2170 integer (2124 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2164 rows, 95333 columns, 284082 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23022    4.7874652e+01   0.000000e+00   2.073959e+05      5s
   49945    4.7768387e+01   0.000000e+00   4.670353e+03     10s
   64872    4.8000000e+01   0.000000e+00   0.000000e+00     13s
   64872    4.8000000e+01   0.000000e+00   0.000000e+00     13s
   64872    4.8000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.800000e+01, 64872 iterations, 11.54 seconds (8.53 work units)
Total elapsed time = 22.40s (DegenMoves)

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

     0     0   48.00000    0  475    7.00000   48.00000   586%     -   24s
H    0     0                      11.0000000   48.00000   336%     -   24s
     0     0   48.00000    0  859   11.00000   48.00000   336%     -   40s
     0     0   48.00000    0  863   11.00000   48.00000   336%     -   42s
     0     0          -    0        11.00000   48.00000   336%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 28
  Cover: 8
  Clique: 28
  MIR: 146
  Zero half: 79
  RLT: 76
  Relax-and-lift: 1
  BQP: 4

Explored 1 nodes (85092 simplex iterations) in 50.02 seconds (46.28 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 7 3 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.800000000000e+01, gap 336.3636%

Wrote result file './lp_solutions/grafo2285.38.sol'

