
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:21:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11388.40.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/grafo11388.40.lp
Reading time = 0.19 seconds
: 74776 rows, 2147 columns, 226117 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 74776 rows, 2147 columns and 226117 nonzeros
Model fingerprint: 0xc0f73bf2
Variable types: 45 continuous, 2102 integer (2102 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 6.0000000
Presolve removed 16763 rows and 26 columns
Presolve time: 0.75s
Presolved: 58013 rows, 2121 columns, 176405 nonzeros
Variable types: 0 continuous, 2121 integer (2076 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2121 rows, 60134 columns, 178526 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17572    4.0947346e+01   0.000000e+00   7.629377e+04      5s
   35007    4.1000000e+01   0.000000e+00   0.000000e+00     10s
   35007    4.1000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.100000e+01, 35007 iterations, 9.16 seconds (4.81 work units)
Total elapsed time = 20.02s (DegenMoves)

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

     0     0   41.00000    0  545   11.00000   41.00000   273%     -   25s
H    0     0                      13.0000000   41.00000   215%     -   25s
     0     0   41.00000    0  778   13.00000   41.00000   215%     -   37s
     0     0   41.00000    0  748   13.00000   41.00000   215%     -   40s
     0     0          -    0        13.00000   41.00000   215%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 24
  Cover: 8
  Clique: 12
  MIR: 96
  Zero half: 18
  RLT: 50
  BQP: 4

Explored 1 nodes (57118 simplex iterations) in 50.11 seconds (28.95 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 11 6 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.100000000000e+01, gap 215.3846%

Wrote result file './lp_solutions/grafo11388.40.sol'

