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 in four parts:
  1. 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 provide some useful information on the computer.
  2. 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 !
  3. 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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    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.
  4. 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.

General information on the benchmark

Namesubmitted/aloul/FPGA_SAT05/normalized-chnl10_11_pb.cnf.cr.opb
MD5SUM49b1c3edd36dd2ed7e6daee563a7bd24
Bench Categoryno optimization function (SAT)
Has Objective FunctionNO
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 0
Biggest coefficient in the objective function 0
Number of bits for the biggest coefficient in the objective function 0
Sum of the numbers in the objective function 0
Number of bits of the sum of numbers in the objective function 0
Biggest number in a constraint 1
Number of bits of the biggest number in a constraint 1
Biggest sum of numbers in a constraint 12
Number of bits of the biggest sum of numbers4
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.010997
Number of variables220
Total number of constraints42
Number of constraints which are clauses22
Number of constraints which are cardinality constraints (but not clauses)20
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint10
Maximum length of a constraint11

Trace number 9445

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-23 13:59:05 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8205 boxname=wulflinc30 idbench=1 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  49b1c3edd36dd2ed7e6daee563a7bd24  /oldhome/oroussel/tmp/wulflinc30/normalized-chnl10_11_pb.cnf.cr.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc30/normalized-chnl10_11_pb.cnf.cr.opb
IDLAUNCH: 8205
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        947784 kB
Buffers:         10772 kB
Cached:          59132 kB
SwapCached:          0 kB
Active:          41768 kB
Inactive:        30984 kB
HighTotal:      131008 kB
HighFree:        67844 kB
LowTotal:       903652 kB
LowFree:        879940 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              76 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             8540 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 13:59:47 (client local time) WITH STATUS 20 IN 41.4917 SECONDS
stats: 8205 7 41.4917 20

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...

c Decision: 200/620	Time: 7.36888/86400
c Decision: 200/620	Time: 7.8958/86400
c Decision: 200/620	Time: 8.49871/86400
c Decision: 200/620	Time: 9.2236/86400
c Decision: 200/620	Time: 10.0545/86400
c Decision: 200/620	Time: 11.1273/86400
c Decision: 200/620	Time: 12.1572/86400
c Decision: 200/620	Time: 13.151/86400
c Decision: 200/620	Time: 14.4928/86400
c Decision: 200/620	Time: 15.7606/86400
c Decision: 200/620	Time: 17.3024/86400
c Decision: 200/620	Time: 18.9171/86400
c Decision: 200/620	Time: 20.6339/86400
c Decision: 200/620	Time: 22.4596/86400
c Decision: 200/620	Time: 24.2443/86400
c Decision: 200/620	Time: 26.194/86400
c Decision: 200/620	Time: 28.3657/86400
s UNSATISFIABLE

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/6252/stat): 6252 (pb2sat) R 6251 6252 4004 0 -1 0 17 0 1 0 0 0 0 0 18 0 1 0 20694193 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6252/statm): 373 2 364 364 0 9 0
[pid=6252] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-chnl10_11_pb.cnf.cr.opb

[startup+10.1023 s]
Raw data (loadavg): 0.82 1.01 1.03 2/55 6252
Raw data (/proc/6252/stat): 6252 (pb2sat) R 6251 6252 4004 0 -1 0 988 0 9 0 939 19 0 0 25 0 1 0 20694193 5128192 928 4294967295 134512640 135987407 3221224560 3221223408 134790069 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/6252/statm): 1252 928 364 364 0 888 0
[pid=6252] vsize: 5008
Current children cumulated CPU time (s) 9.58
Current children cumulated vsize (Kb) 5008

[startup+20.1031 s]
Raw data (loadavg): 0.84 1.00 1.03 2/55 6252
Raw data (/proc/6252/stat): 6252 (pb2sat) R 6251 6252 4004 0 -1 0 1357 0 9 0 1908 29 0 0 25 0 1 0 20694193 7999488 1297 4294967295 134512640 135987407 3221224560 3221223248 134811850 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/6252/statm): 1953 1297 364 364 0 1589 0
[pid=6252] vsize: 7812
Current children cumulated CPU time (s) 19.37
Current children cumulated vsize (Kb) 7812

[startup+30.1039 s]
Raw data (loadavg): 0.87 1.00 1.03 2/55 6252
Raw data (/proc/6252/stat): 6252 (pb2sat) R 6251 6252 4004 0 -1 0 1728 0 9 0 2887 38 0 0 25 0 1 0 20694193 8704000 1571 4294967295 134512640 135987407 3221224560 3221223248 134811775 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/6252/statm): 2125 1571 364 364 0 1761 0
[pid=6252] vsize: 8500
Current children cumulated CPU time (s) 29.25
Current children cumulated vsize (Kb) 8500

[startup+40.1037 s]
Raw data (loadavg): 0.89 1.00 1.03 1/55 6252
Raw data (/proc/6252/stat): 6252 (pb2sat) T 6251 6252 4004 0 -1 0 1985 0 9 0 3870 43 0 0 25 0 1 0 20694193 9031680 1828 4294967295 134512640 135987407 3221224560 3221223388 135541329 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/6252/statm): 2205 1828 364 364 0 1841 0
[pid=6252] vsize: 8820
Current children cumulated CPU time (s) 39.13
Current children cumulated vsize (Kb) 8820
One traced child (pid=6252) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 42.4708
CPU time (s): 41.4917
CPU user time (s): 41.0438
CPU system time (s): 0.447931
CPU usage (%): 97.6947
Max. virtual memory (cumulated for all children) (Kb): 8820

Verifier Data

ERROR: no interpretation found !