Trace number 40657

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds, and are wall clock time (not CPU time).

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerObjective functionCPU timeWall clock time
bsolo 2006/05UNSAT 45.4491 45.4995

General information on the benchmark

Namenormalized-PB06/OPT-BIGINT/mps-v2-20-10/ftp.netlib.org/
lp/data/normalized-mps-v2-20-10-stair.opb
MD5SUM93ec90d2ad0b276483c19ced945be9c0
Bench CategoryOPT-BIGINT (optimisation, big integers)
Best result obtained on this benchmarkUNSAT
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark45.4491
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was provedYES
Best value of the objective function
Optimality of the best value was proved
Number of variables11454
Total number of constraints362
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints362
Minimum length of a constraint13
Maximum length of a constraint810
Number of terms in the objective function 30
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 1073741823
Number of bits of the sum of numbers in the objective function 30
Biggest number in a constraint 528959045369856
Number of bits of the biggest number in a constraint 49
Biggest sum of numbers in a constraint 3702118998041541
Number of bits of the biggest sum of numbers52
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data (download as text)

0.00	c Time Limit set via PBTIMEOUT to 1800
0.01	c INFO: OSL Context initialized.
0.02	c BIG Int formula...
0.50	c Initial problem consists of 11454 variables and 571 constraints.
0.55	c No problem reductions applied in OPT. instance.
0.55	c	preprocess terminated. Elapsed time: 0.541
0.55	c After prepocess the problem consists of 9903 variables and 571 constraints.
0.55	c Initial Lower Bound: -1048575
1.18	c Restart #1 #Var: 9903 LB: -1048575 @ 1.171
2.70	c Restart #2 #Var: 9903 LB: -1048575 @ 2.689
4.72	c Restart #3 #Var: 9903 LB: -1048575 @ 4.705
7.30	c Restart #4 #Var: 9903 LB: -1048575 @ 7.289
10.65	c Restart #5 #Var: 9903 LB: -1048575 @ 10.636
12.46	c Restart #6 #Var: 9903 LB: -1048575 @ 12.448
14.01	c Restart #7 #Var: 9903 LB: -1048575 @ 13.994
15.77	c Restart #8 #Var: 9903 LB: -1048575 @ 15.748
17.76	c Restart #9 #Var: 9903 LB: -1048575 @ 17.741
20.09	c Restart #10 #Var: 9903 LB: -1048575 @ 20.075
27.08	c Restart #11 #Var: 9903 LB: -1048575 @ 27.058
34.35	c Restart #12 #Var: 9903 LB: -1048575 @ 34.328
37.05	c Restart #13 #Var: 9903 LB: -1048575 @ 37.024
39.17	c Restart #14 #Var: 9902 LB: -1048575 @ 39.144
40.40	c Restart #15 #Var: 9902 LB: -1048575 @ 40.374
41.33	c Restart #16 #Var: 9902 LB: -1048575 @ 41.297
41.96	c Restart #17 #Var: 9902 LB: -1048575 @ 41.927
42.41	c Restart #18 #Var: 9902 LB: -1048575 @ 42.376
42.98	c Restart #19 #Var: 9902 LB: -1048575 @ 42.931
43.57	c Restart #20 #Var: 9902 LB: -1048575 @ 43.521
44.25	c Restart #21 #Var: 9901 LB: -1048575 @ 44.202
45.33	c Restart #22 #Var: 9870 LB: -524287 @ 45.281
45.48	s UNSATISFIABLE
45.48	c Exit Code: 20
45.48	c Total time: 45.438 s

Verifier Data (download as text)

ERROR: no interpretation found !

Watcher Data (download as text)

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1830 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGKILL): 1843200 Kb
Enforcing VSIZE limit: 1887436800 bytes
runsolver version 3.0.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node20/watcher-40657-1149310821 -o ROOT/results/node20/solver-40657-1149310821 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node20/40657-1149310821/instance-40657-1149310821.opb 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.92 0.97 0.95 2/64 30080
/proc/meminfo: memFree=1634592/2055920 swapFree=4181488/4192956
[pid=30080] ppid=30078 vsize=4748 CPUtime=0
/proc/30080/stat : 30080 (bsolo) R 30078 30080 30034 0 -1 0 244 0 0 0 0 0 0 0 19 0 1 0 196745192 4861952 214 18446744073709551615 134512640 134738892 4294956688 18446744073709551615 134559205 0 0 4096 16384 0 0 0 17 1 0 0
/proc/30080/statm: 1231 223 153 55 0 123 0

[startup+10.002 s]
/proc/loadavg: 0.93 0.97 0.95 2/64 30080
/proc/meminfo: memFree=1613480/2055920 swapFree=4181488/4192956
[pid=30080] ppid=30078 vsize=26044 CPUtime=9.98
/proc/30080/stat : 30080 (bsolo) R 30078 30080 30034 0 -1 0 5686 0 0 0 973 25 0 0 25 0 1 0 196745192 26669056 5601 18446744073709551615 134512640 134738892 4294956688 18446744073709551615 4294960144 0 0 4096 16384 0 0 0 17 1 0 0
/proc/30080/statm: 6511 5601 297 55 0 5403 0
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 26044

[startup+20.0082 s]
/proc/loadavg: 0.94 0.97 0.95 2/64 30080
/proc/meminfo: memFree=1613032/2055920 swapFree=4181488/4192956
[pid=30080] ppid=30078 vsize=26572 CPUtime=19.99
/proc/30080/stat : 30080 (bsolo) R 30078 30080 30034 0 -1 0 5796 0 0 0 1948 51 0 0 25 0 1 0 196745192 27209728 5711 18446744073709551615 134512640 134738892 4294956688 18446744073709551615 134542240 0 0 4096 16384 0 0 0 17 1 0 0
/proc/30080/statm: 6643 5711 297 55 0 5535 0
Current children cumulated CPU time (s) 19.99
Current children cumulated vsize (Kb) 26572

[startup+30.0144 s]
/proc/loadavg: 0.95 0.97 0.95 2/64 30080
/proc/meminfo: memFree=1610344/2055920 swapFree=4181488/4192956
[pid=30080] ppid=30078 vsize=29212 CPUtime=29.99
/proc/30080/stat : 30080 (bsolo) R 30078 30080 30034 0 -1 0 6483 0 0 0 2923 76 0 0 25 0 1 0 196745192 29913088 6398 18446744073709551615 134512640 134738892 4294956688 18446744073709551615 4294960144 0 0 4096 16384 0 0 0 17 1 0 0
/proc/30080/statm: 7303 6398 297 55 0 6195 0
Current children cumulated CPU time (s) 29.99
Current children cumulated vsize (Kb) 29212

[startup+40.0206 s]
/proc/loadavg: 0.96 0.97 0.95 2/70 30103
/proc/meminfo: memFree=1601080/2055920 swapFree=4181488/4192956
[pid=30080] ppid=30078 vsize=37536 CPUtime=39.99
/proc/30080/stat : 30080 (bsolo) R 30078 30080 30034 0 -1 0 8537 0 0 0 3908 91 0 0 25 0 1 0 196745192 38436864 8452 18446744073709551615 134512640 134738892 4294956688 18446744073709551615 134537565 0 0 4096 16384 0 0 0 17 1 0 0
/proc/30080/statm: 9384 8452 297 55 0 8276 0
Current children cumulated CPU time (s) 39.99
Current children cumulated vsize (Kb) 37536

Child status: 20
Real time (s): 45.4995
CPU time (s): 45.4491
CPU user time (s): 44.4592
CPU system time (s): 0.989849
CPU usage (%): 99.8893
Max. virtual memory (cumulated for all children) (Kb): 37536

Launcher Data (download as text)

Begin job on node20 on Sat Jun  3 05:00:21 UTC 2006


FILE ID= 40657-1149310821

PBS_JOBID= 307942

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-BIGINT/mps-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-stair.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node20/40657-1149310821/instance-40657-1149310821.opb
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node20/watcher-40657-1149310821 -o ROOT/results/node20/solver-40657-1149310821 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node20/40657-1149310821/instance-40657-1149310821.opb

MD5SUM SOLVER= 05cada221eb1efaaae980ebc7509e7e8
MD5SUM BENCH=  93ec90d2ad0b276483c19ced945be9c0

RANDOM SEED= 762392821


/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.236
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.236
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1634864 kB
Buffers:         27676 kB
Cached:         320092 kB
SwapCached:       3180 kB
Active:          23124 kB
Inactive:       333452 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1634864 kB
SwapTotal:     4192956 kB
SwapFree:      4181488 kB
Dirty:             180 kB
Writeback:           0 kB
Mapped:          14772 kB
Slab:            50544 kB
Committed_AS:   311712 kB
PageTables:       1432 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node20 on Sat Jun  3 05:01:07 UTC 2006