
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:17:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5958.42.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/grafo5958.42.lp
Reading time = 0.25 seconds
: 132231 rows, 2627 columns, 399128 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 132231 rows, 2627 columns and 399128 nonzeros
Model fingerprint: 0xb32d842d
Variable types: 50 continuous, 2577 integer (2577 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 39194 rows and 109 columns
Presolve time: 1.15s
Presolved: 93037 rows, 2518 columns, 281946 nonzeros
Variable types: 0 continuous, 2518 integer (2468 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2512 rows, 95549 columns, 284464 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16612    4.6483750e+01   0.000000e+00   3.785955e+04      5s
   35004    4.4958282e+01   0.000000e+00   2.673301e+03     10s
   51734    4.4956728e+01   0.000000e+00   2.862476e+01     15s
   54275    4.5000000e+01   0.000000e+00   0.000000e+00     16s
   54275    4.5000000e+01   0.000000e+00   0.000000e+00     16s
   54275    4.5000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.500000e+01, 54275 iterations, 14.56 seconds (9.30 work units)
Total elapsed time = 35.98s (DegenMoves)

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

     0     0   45.00000    0  512   13.00000   45.00000   246%     -   38s
H    0     0                      15.0000000   45.00000   200%     -   38s
     0     0          -    0        15.00000   45.00000   200%     -   50s

Cutting planes:
  Gomory: 30
  Cover: 25
  Clique: 19
  MIR: 78
  StrongCG: 2
  Zero half: 100
  RLT: 35
  BQP: 2

Explored 1 nodes (72944 simplex iterations) in 50.02 seconds (38.63 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 4.500000000000e+01, gap 200.0000%

Wrote result file './lp_solutions/grafo5958.42.sol'

