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

Namemps-v2-20-10/plato.asu.edu/pub/unibo/normalized-mps-v2-20-10-core2536-691.opb
MD5SUM127ff6a7c180d4ca2c922cfd5e8d4802
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 939008000000000
Optimality of the best value was proved NO
Number of terms in the objective function 15554
Biggest coefficient in the objective function 53687091200000000000
Number of bits for the biggest coefficient in the objective function 66
Sum of the numbers in the objective function 215744503004511174656
Number of bits of the sum of numbers in the objective function 68
Biggest number in a constraint 10240000000000000000000
Number of bits of the biggest number in a constraint 74
Biggest sum of numbers in a constraint 10455744503004511862784
Number of bits of the biggest sum of numbers74
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1203.88
Number of variables15554
Total number of constraints17823
Number of constraints which are clauses2536
Number of constraints which are cardinality constraints (but not clauses)15286
Number of constraints which are nor clauses,nor cardinality constraints1
Minimum length of a constraint1
Maximum length of a constraint15554

Trace number 6403

Launcher Data

LAUNCH ON wulflinc27 THE 2005-09-20 06:39:23 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4297 boxname=wulflinc27 idbench=781 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  127ff6a7c180d4ca2c922cfd5e8d4802  /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-core2536-691.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-core2536-691.opb
IDLAUNCH: 4297
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.169
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	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.169
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	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        894656 kB
Buffers:         26648 kB
Cached:          83772 kB
SwapCached:        692 kB
Active:          39464 kB
Inactive:        73512 kB
HighTotal:      131008 kB
HighFree:        46452 kB
LowTotal:       903652 kB
LowFree:        848204 kB
SwapTotal:     2097892 kB
SwapFree:      2096628 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5732 kB
Slab:            21292 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 06:39:58 (client local time) WITH STATUS 20 IN 34.3248 SECONDS
stats: 4297 7 34.3248 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-core2536-691.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.036995

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/29024/stat): 29024 (PBS4) R 29023 29024 28974 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1856428234 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/29024/statm): 239 2 232 232 0 7 0
[pid=29024] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-core2536-691.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-core2536-691.opb

[startup+10.0024 s]
Raw data (loadavg): 0.93 0.97 0.93 2/56 29024
Raw data (/proc/29024/stat): 29024 (PBS4) R 29023 29024 28974 0 -1 0 970 0 0 0 995 3 0 0 25 0 1 0 1856428234 4870144 953 4294967295 134512640 135450776 3221224560 3221223072 134600392 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/29024/statm): 1189 953 232 232 0 957 0
[pid=29024] vsize: 4756
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 4756

[startup+20.0023 s]
Raw data (loadavg): 0.94 0.97 0.93 2/56 29024
Raw data (/proc/29024/stat): 29024 (PBS4) R 29023 29024 28974 0 -1 0 1420 0 0 0 1991 5 0 0 25 0 1 0 1856428234 7286784 1342 4294967295 134512640 135450776 3221224560 3221223072 134600376 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/29024/statm): 1779 1342 232 232 0 1547 0
[pid=29024] vsize: 7116
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 7116

[startup+30.0041 s]
Raw data (loadavg): 0.95 0.97 0.93 2/56 29024
Raw data (/proc/29024/stat): 29024 (PBS4) R 29023 29024 28974 0 -1 0 1632 0 0 0 2989 6 0 0 25 0 1 0 1856428234 7536640 1439 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/29024/statm): 1840 1439 232 232 0 1608 0
[pid=29024] vsize: 7360
Current children cumulated CPU time (s) 29.95
Current children cumulated vsize (Kb) 7360
One traced child (pid=29024) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 34.3641
CPU time (s): 34.3248
CPU user time (s): 34.2388
CPU system time (s): 0.085986
CPU usage (%): 99.8856
Max. virtual memory (cumulated for all children) (Kb): 7360

Verifier Data

ERROR: no interpretation found !