
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:00:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3381.40.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/grafo3381.40.lp
Reading time = 0.18 seconds
: 111640 rows, 2241 columns, 336832 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 111640 rows, 2241 columns and 336832 nonzeros
Model fingerprint: 0xe2c45f8a
Variable types: 47 continuous, 2194 integer (2194 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 33659 rows and 28 columns
Presolve time: 0.81s
Presolved: 77981 rows, 2213 columns, 236290 nonzeros
Variable types: 0 continuous, 2213 integer (2166 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2210 rows, 80191 columns, 238503 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25330    4.7803956e+01   0.000000e+00   5.208040e+03      5s
   37435    4.8000000e+01   0.000000e+00   0.000000e+00      7s
   37435    4.8000000e+01   0.000000e+00   0.000000e+00      7s
   37435    4.8000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.800000e+01, 37435 iterations, 6.55 seconds (5.16 work units)
Total elapsed time = 16.21s (DegenMoves)

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

     0     0   48.00000    0  568    9.00000   48.00000   433%     -   17s
H    0     0                      11.0000000   48.00000   336%     -   17s
     0     0   48.00000    0  834   11.00000   48.00000   336%     -   32s
     0     0   48.00000    0  834   11.00000   48.00000   336%     -   34s
     0     0   48.00000    0  865   11.00000   48.00000   336%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 30
  Cover: 3
  Clique: 11
  MIR: 77
  Zero half: 27
  RLT: 50
  BQP: 3

Explored 1 nodes (63886 simplex iterations) in 50.03 seconds (47.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 9 3 

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

Wrote result file './lp_solutions/grafo3381.40.sol'

