Trace number 2668083

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 0.1OPT-3 0.017996 0.0174629

General information on the benchmark

Namenormalized-PB07/OPT-SMALLINT-NLC/submittedPB07/
manquinho/mis/normalized-mis_10_4_3.opb
MD5SUM09f24c2e264dfbb5434207d53f9d29e3
Bench CategoryOPT-SMALLINT-NLC (optimisation, small integers, non linear constraints)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark-3
Best CPU time to get the best result obtained on this benchmark0.001998
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -3
Optimality of the best value was proved YES
Number of variables10
Total number of constraints10
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 constraints10
Minimum length of a constraint4
Maximum length of a constraint7
Number of terms in the objective function 10
Biggest coefficient in the objective function 1
Number of bits for the biggest coefficient in the objective function 1
Sum of the numbers in the objective function 10
Number of bits of the sum of numbers in the objective function 4
Biggest number in a constraint 1
Number of bits of the biggest number in a constraint 1
Biggest sum of numbers in a constraint 10
Number of bits of the biggest sum of numbers4
Number of products (including duplicates)52
Sum of products size (including duplicates)104
Number of different products26
Sum of products size52

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 http://www.residual.se/pbct
0.00/0.00	c Based on OpenSMT/CT 20091015
0.00/0.00	c constraints 36/0 clauses 26/0 units 0
0.00/0.00	c vars 10
0.00/0.00	c objective 10 + -10
0.00/0.01	c 0.010998 3.69531 0 28
0.00/0.01	o 0
0.00/0.01	c 0.010998 3.82031 0 49
0.00/0.01	o -1
0.00/0.01	c 0.010998 3.82031 2 66
0.00/0.01	o -2
0.00/0.01	c 0.011998 3.82031 2 77
0.00/0.01	o -3
0.00/0.01	c 0.013997 3.82031 16 119
0.00/0.01	s OPTIMUM FOUND
0.00/0.01	v -x1 -x2 x3 -x4 -x5 x6 x7 -x8 -x9 -x10

Verifier Data 

OK	-3

Watcher Data 

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

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2668083-1276658656/watcher-2668083-1276658656 -o /tmp/evaluation-result-2668083-1276658656/solver-2668083-1276658656 -C 1800 -W 2000 -M 1800 HOME/pbct --model HOME/instance-2668083-1276658656.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: 1.07 1.02 1.00 3/106 8540
/proc/meminfo: memFree=1625304/2059040 swapFree=4140048/4192956
[pid=8540] ppid=8538 vsize=3384 CPUtime=0
/proc/8540/stat : 8540 (pbct) R 8538 8540 8148 0 -1 4202496 546 0 0 0 0 0 0 0 20 0 1 0 41469257 3465216 468 1992294400 134512640 136485738 4293014848 18446744073709551615 135850441 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/8540/statm: 846 469 198 482 0 362 0

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

Child status: 0
Real time (s): 0.0174629
CPU time (s): 0.017996
CPU user time (s): 0.014997
CPU system time (s): 0.002999
CPU usage (%): 103.052
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.014997
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 711
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= 2
involuntary context switches= 1

runsolver used 0.004999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node006 at 2010-06-16 05:24:16
IDJOB=2668083
IDBENCH=48166
IDSOLVER=1170
FILE ID=node006/2668083-1276658656
PBS_JOBID= 11172491
Free space on /tmp= 62504 MiB

SOLVER NAME= PB/CT 0.1
BENCH NAME= PB07/normalized-PB07/OPT-SMALLINT-NLC/submittedPB07/manquinho/mis/normalized-mis_10_4_3.opb
COMMAND LINE= HOME/pbct --model BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2668083-1276658656/watcher-2668083-1276658656 -o /tmp/evaluation-result-2668083-1276658656/solver-2668083-1276658656 -C 1800 -W 2000 -M 1800  HOME/pbct --model HOME/instance-2668083-1276658656.opb

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

MD5SUM BENCH= 09f24c2e264dfbb5434207d53f9d29e3
RANDOM SEED=754472830

node006.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		: 3000.204
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	: 6000.40
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		: 3000.204
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	: 5599.45
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2059040 kB
MemFree:       1625708 kB
Buffers:        145012 kB
Cached:         202776 kB
SwapCached:       6988 kB
Active:         134024 kB
Inactive:       228164 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2059040 kB
LowFree:       1625708 kB
SwapTotal:     4192956 kB
SwapFree:      4140048 kB
Dirty:            2312 kB
Writeback:           0 kB
AnonPages:       12400 kB
Mapped:          13228 kB
Slab:            49344 kB
PageTables:       4104 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   5222476 kB
Committed_AS:   181236 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= 62500 MiB
End job on node006 at 2010-06-16 05:24:16