Trace number 2682759

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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
PB/CT 0.1 fixedOPT34 1.07683 1.07661

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/mps-v2-20-10/
MIPLIB/miplib/normalized-mps-v2-20-10-bm23.opb
MD5SUM5c5bb330d1cbd0e2ab066594a5d2a4de
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark34
Best CPU time to get the best result obtained on this benchmark0.089986
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 34
Optimality of the best value was proved YES
Number of variables27
Total number of constraints20
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 constraints20
Minimum length of a constraint18
Maximum length of a constraint26
Number of terms in the objective function 27
Biggest coefficient in the objective function 9
Number of bits for the biggest coefficient in the objective function 4
Sum of the numbers in the objective function 124
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 65
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 182
Number of bits of the biggest sum of numbers8
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Quality of the solution as a function of time


Download the above graph as a PDF file / as an EPS file

Solver Data 

0.00/0.00	c PB/CT 0.1.1 http://www.residual.se/pbct
0.00/0.00	c Based on OpenSMT/CT 20091015
0.00/0.00	c constraints 20/0 clauses 0/0 units 0
0.00/0.00	c vars 27
0.00/0.00	c objective 27 + 0
0.19/0.21	c 0.189971 4.92188 636 1044
0.19/0.21	o 66
0.29/0.31	c 0.278957 4.92188 335 1585
0.29/0.31	o 53
0.29/0.33	c 0.294955 4.92188 398 1664
0.29/0.33	o 42
0.29/0.39	c 0.353946 4.92188 487 1992
0.29/0.39	o 41
0.39/0.48	c 0.429934 4.92188 399 2426
0.39/0.48	o 35
0.69/0.79	c 0.726889 4.92188 466 4145
0.69/0.79	o 34
0.99/1.07	c 0.976851 4.92188 109 5549
0.99/1.07	s OPTIMUM FOUND
0.99/1.07	v -x1 -x2 x3 -x4 x5 -x6 -x7 -x8 x9 -x10 -x11 -x12 -x13 -x14 x15 -x16 x17 -x18 -x19 x20 -x21 x22 -x23 -x24 -x25 -x26 x27

Verifier Data 

OK	34

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2682759-1277477857/watcher-2682759-1277477857 -o /tmp/evaluation-result-2682759-1277477857/solver-2682759-1277477857 -C 1800 -W 2000 -M 1800 HOME/pbct --model HOME/instance-2682759-1277477857.opb 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.99 0.97 0.86 3/106 23961
/proc/meminfo: memFree=1825820/2059040 swapFree=4139492/4192956
[pid=23961] ppid=23959 vsize=3308 CPUtime=0
/proc/23961/stat : 23961 (pbct) R 23959 23961 23632 0 -1 4202496 547 0 0 0 0 0 0 0 20 0 1 0 123387192 3387392 467 1992294400 134512640 136421960 4291478976 18446744073709551615 135811817 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23961/statm: 827 468 193 467 0 358 0

[startup+0.0333679 s]
/proc/loadavg: 0.99 0.97 0.86 3/106 23961
/proc/meminfo: memFree=1825820/2059040 swapFree=4139492/4192956
[pid=23961] ppid=23959 vsize=4904 CPUtime=0.02
/proc/23961/stat : 23961 (pbct) R 23959 23961 23632 0 -1 4202496 944 0 0 0 2 0 0 0 20 0 1 0 123387192 5021696 864 1992294400 134512640 136421960 4291478976 18446744073709551615 135874657 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23961/statm: 1226 864 213 467 0 757 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 4904

[startup+0.101377 s]
/proc/loadavg: 0.99 0.97 0.86 3/106 23961
/proc/meminfo: memFree=1825820/2059040 swapFree=4139492/4192956
[pid=23961] ppid=23959 vsize=4904 CPUtime=0.1
/proc/23961/stat : 23961 (pbct) R 23959 23961 23632 0 -1 4202496 954 0 0 0 9 1 0 0 20 0 1 0 123387192 5021696 874 1992294400 134512640 136421960 4291478976 18446744073709551615 135874657 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23961/statm: 1226 874 213 467 0 757 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 4904

[startup+0.301403 s]
/proc/loadavg: 0.99 0.97 0.86 3/106 23961
/proc/meminfo: memFree=1825820/2059040 swapFree=4139492/4192956
[pid=23961] ppid=23959 vsize=5036 CPUtime=0.29
/proc/23961/stat : 23961 (pbct) R 23959 23961 23632 0 -1 4202496 1003 0 0 0 26 3 0 0 20 0 1 0 123387192 5156864 922 1992294400 134512640 136421960 4291478976 18446744073709551615 135874657 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23961/statm: 1259 922 236 467 0 790 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 5036

[startup+0.701455 s]
/proc/loadavg: 0.99 0.97 0.86 3/106 23961
/proc/meminfo: memFree=1825820/2059040 swapFree=4139492/4192956
[pid=23961] ppid=23959 vsize=5036 CPUtime=0.69
/proc/23961/stat : 23961 (pbct) R 23959 23961 23632 0 -1 4202496 1007 0 0 0 63 6 0 0 20 0 1 0 123387192 5156864 922 1992294400 134512640 136421960 4291478976 18446744073709551615 135874657 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23961/statm: 1259 922 236 467 0 790 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 5036

Solver just ended. Dumping a history of the last processes samples

[startup+0.901482 s]
/proc/loadavg: 0.99 0.97 0.86 3/106 23961
/proc/meminfo: memFree=1825820/2059040 swapFree=4139492/4192956
[pid=23961] ppid=23959 vsize=5036 CPUtime=0.89
/proc/23961/stat : 23961 (pbct) R 23959 23961 23632 0 -1 4202496 1008 0 0 0 81 8 0 0 21 0 1 0 123387192 5156864 922 1992294400 134512640 136421960 4291478976 18446744073709551615 135874657 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23961/statm: 1259 922 236 467 0 790 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 5036

[startup+1.00149 s]
/proc/loadavg: 0.99 0.97 0.86 2/107 23962
/proc/meminfo: memFree=1822960/2059040 swapFree=4139492/4192956
[pid=23961] ppid=23959 vsize=5036 CPUtime=0.99
/proc/23961/stat : 23961 (pbct) R 23959 23961 23632 0 -1 4202496 1008 0 0 0 91 8 0 0 21 0 1 0 123387192 5156864 922 1992294400 134512640 136421960 4291478976 18446744073709551615 135874657 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23961/statm: 1259 922 236 467 0 790 0
Current children cumulated CPU time (s) 0.99
Current children cumulated vsize (KiB) 5036

Child status: 0
Real time (s): 1.07661
CPU time (s): 1.07683
CPU user time (s): 0.98085
CPU system time (s): 0.095985
CPU usage (%): 100.021
Max. virtual memory (cumulated for all children) (KiB): 5036

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.98085
system time used= 0.095985
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1013
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 1
involuntary context switches= 5

runsolver used 0.004999 second user time and 0.013997 second system time

The end

Launcher Data 

Begin job on node013 at 2010-06-25 16:57:37
IDJOB=2682759
IDBENCH=1860
IDSOLVER=1192
FILE ID=node013/2682759-1277477857
PBS_JOBID= 11190523
Free space on /tmp= 62404 MiB

SOLVER NAME= PB/CT 0.1 fixed
BENCH NAME= PB06//final/normalized-PB06/OPT-SMALLINT/mps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-bm23.opb
COMMAND LINE= HOME/pbct --model BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2682759-1277477857/watcher-2682759-1277477857 -o /tmp/evaluation-result-2682759-1277477857/solver-2682759-1277477857 -C 1800 -W 2000 -M 1800  HOME/pbct --model HOME/instance-2682759-1277477857.opb

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 5c5bb330d1cbd0e2ab066594a5d2a4de
RANDOM SEED=1502625504

node013.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/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		: 3000.253
cache size	: 2048 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 0
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 constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 6000.50
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		: 3000.253
cache size	: 2048 KB
physical id	: 3
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 6
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 constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5599.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2059040 kB
MemFree:       1826224 kB
Buffers:         44876 kB
Cached:          86488 kB
SwapCached:       5972 kB
Active:          69732 kB
Inactive:        75112 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2059040 kB
LowFree:       1826224 kB
SwapTotal:     4192956 kB
SwapFree:      4139492 kB
Dirty:            1904 kB
Writeback:           0 kB
AnonPages:       12212 kB
Mapped:          11820 kB
Slab:            65892 kB
PageTables:       4172 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   5222476 kB
Committed_AS:   181564 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    264948 kB
VmallocChunk: 34359471699 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 62400 MiB
End job on node013 at 2010-06-25 16:57:38