
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:35:39 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7352.42.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/grafo7352.42.lp
Reading time = 0.12 seconds
: 76408 rows, 2360 columns, 231312 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 76408 rows, 2360 columns and 231312 nonzeros
Model fingerprint: 0xdb53a729
Variable types: 49 continuous, 2311 integer (2311 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]
Presolve removed 9712 rows and 38 columns
Presolve time: 0.54s
Presolved: 66696 rows, 2322 columns, 202600 nonzeros
Variable types: 0 continuous, 2322 integer (2273 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2322 rows, 69018 columns, 204922 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25187    4.1947035e+01   0.000000e+00   2.327702e+04      5s
   49610    4.1941497e+01   0.000000e+00   8.606291e+01     10s
   58050    4.2000000e+01   0.000000e+00   0.000000e+00     12s
   58050    4.2000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.200000e+01, 58050 iterations, 11.11 seconds (8.76 work units)
Total elapsed time = 18.35s (DegenMoves)

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

     0     0   42.00000    0  541   13.00000   42.00000   223%     -   19s
H    0     0                      15.0000000   42.00000   180%     -   20s
     0     0   42.00000    0  728   15.00000   42.00000   180%     -   28s
     0     0   42.00000    0  693   15.00000   42.00000   180%     -   30s
     0     0   42.00000    0  714   15.00000   42.00000   180%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 37
  Cover: 12
  Clique: 4
  MIR: 129
  StrongCG: 1
  Zero half: 31
  RLT: 67
  BQP: 2

Explored 1 nodes (88347 simplex iterations) in 50.07 seconds (41.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 15 13 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.200000000000e+01, gap 180.0000%

Wrote result file './lp_solutions/grafo7352.42.sol'

