
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:06:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5976.43.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/grafo5976.43.lp
Reading time = 0.17 seconds
: 90708 rows, 2474 columns, 274269 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 90708 rows, 2474 columns and 274269 nonzeros
Model fingerprint: 0x25f19bcd
Variable types: 49 continuous, 2425 integer (2425 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 18537 rows and 23 columns
Presolve time: 0.71s
Presolved: 72171 rows, 2451 columns, 219171 nonzeros
Variable types: 0 continuous, 2451 integer (2402 binary)
Root relaxation presolved: 2451 rows, 74622 columns, 221622 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18166    4.8958904e+01   0.000000e+00   3.756281e+04      5s
   36868    4.8934878e+01   0.000000e+00   1.003142e+04     10s
   54208    4.8928051e+01   0.000000e+00   2.137382e+03     15s
   71247    4.9000000e+01   0.000000e+00   0.000000e+00     20s
   71247    4.9000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 4.900000e+01, 71247 iterations, 19.02 seconds (11.94 work units)
Total elapsed time = 20.26s (DegenMoves)
Total elapsed time = 32.36s (DegenMoves)
Total elapsed time = 37.37s (DegenMoves)

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

     0     0   49.00000    0  464          -   49.00000      -     -   37s
H    0     0                      13.0000000   49.00000   277%     -   38s
H    0     0                      15.0000000   49.00000   227%     -   38s
     0     0          -    0        15.00000   49.00000   227%     -   50s

Cutting planes:
  Gomory: 39
  Cover: 42
  Clique: 9
  MIR: 214
  GUB cover: 2
  Zero half: 37
  RLT: 50
  BQP: 1

Explored 1 nodes (92916 simplex iterations) in 50.14 seconds (36.36 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 4.900000000000e+01, gap 226.6667%

Wrote result file './lp_solutions/grafo5976.43.sol'

