
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:13:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7635.41.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/grafo7635.41.lp
Reading time = 0.11 seconds
: 68403 rows, 2283 columns, 207171 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 68403 rows, 2283 columns and 207171 nonzeros
Model fingerprint: 0x77b9e576
Variable types: 49 continuous, 2234 integer (2234 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 -0.0000000
Presolve removed 6431 rows and 0 columns
Presolve time: 0.38s
Presolved: 61972 rows, 2283 columns, 188245 nonzeros
Variable types: 0 continuous, 2283 integer (2234 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2238 rows, 64210 columns, 190528 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26286    4.3951243e+01   0.000000e+00   3.796592e+03      5s
   45354    4.4000000e+01   0.000000e+00   0.000000e+00      9s
   45354    4.4000000e+01   0.000000e+00   0.000000e+00      9s
   45354    4.4000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.400000e+01, 45354 iterations, 8.57 seconds (7.41 work units)
Total elapsed time = 19.83s (DegenMoves)
Total elapsed time = 24.22s (DegenMoves)

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

     0     0   44.00000    0  608   11.00000   44.00000   300%     -   24s
H    0     0                      13.0000000   44.00000   238%     -   24s
     0     0   44.00000    0  834   13.00000   44.00000   238%     -   35s
     0     0   44.00000    0  811   13.00000   44.00000   238%     -   37s
     0     0   44.00000    0  894   13.00000   44.00000   238%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 27
  Cover: 11
  MIR: 144
  Zero half: 12
  RLT: 58

Explored 1 nodes (78967 simplex iterations) in 50.05 seconds (46.12 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 11 -0 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.400000000000e+01, gap 238.4615%

Wrote result file './lp_solutions/grafo7635.41.sol'

