
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:49:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7000.40.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/grafo7000.40.lp
Reading time = 0.27 seconds
: 150638 rows, 2015 columns, 453484 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 150638 rows, 2015 columns and 453484 nonzeros
Model fingerprint: 0x8123f58a
Variable types: 42 continuous, 1973 integer (1973 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 4.0000000
Presolve removed 58188 rows and 27 columns
Presolve time: 1.53s
Presolved: 92450 rows, 1988 columns, 279228 nonzeros
Variable types: 0 continuous, 1988 integer (1946 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 1988 rows, 94438 columns, 281216 nonzeros


Root relaxation: objective 4.200000e+01, 2115 iterations, 0.68 seconds (0.61 work units)
Total elapsed time = 10.52s (DegenMoves)

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

     0     0   42.00000    0  463    9.00000   42.00000   367%     -   11s
H    0     0                      11.0000000   42.00000   282%     -   11s
H    0     0                      12.0000000   42.00000   250%     -   11s
     0     0   42.00000    0  655   12.00000   42.00000   250%     -   22s
H    0     0                      13.0000000   42.00000   223%     -   22s
     0     0   42.00000    0  596   13.00000   42.00000   223%     -   22s
     0     0   42.00000    0  719   13.00000   42.00000   223%     -   50s

Cutting planes:
  Gomory: 9
  Lift-and-project: 51
  Cover: 24
  Clique: 15
  MIR: 105
  GUB cover: 3
  Zero half: 24
  RLT: 57

Explored 1 nodes (28212 simplex iterations) in 50.04 seconds (41.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 13 12 11 ... 4

Time limit reached
Best objective 1.300000000000e+01, best bound 4.200000000000e+01, gap 223.0769%

Wrote result file './lp_solutions/grafo7000.40.sol'

