PB'05 competition: run trace

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:

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.
SOLVER DATA
This is the output of the solver (stdout and stderr).
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.
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

Name	normalized-opb/mps-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-pilot.opb
MD5SUM	d9327b817828dc5afade576c2194d741
Bench Category	optimization, big integers (OPTBIGINT)
Has Objective Function	YES
Satisfiable	NO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function	840
Biggest coefficient in the objective function	3784939929600
Number of bits for the biggest coefficient in the objective function	42
Sum of the numbers in the objective function	93738734889723
Number of bits of the sum of numbers in the objective function	47
Biggest number in a constraint	13851269529600000
Number of bits of the biggest number in a constraint	54
Biggest sum of numbers in a constraint	368128606591816686
Number of bits of the biggest sum of numbers	59
Best result obtained on this benchmark	UNSAT
Best CPU time to get the best result obtained on this benchmark	5.13622
Number of variables	86785
Total number of constraints	2515
Number of constraints which are clauses	0
Number of constraints which are cardinality constraints (but not clauses)	0
Number of constraints which are nor clauses,nor cardinality constraints	2515
Minimum length of a constraint	10
Maximum length of a constraint	7620

Trace number 17241

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc20 THE 2005-04-21 10:09:27 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11095 boxname=wulflinc20 idbench=854 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  d9327b817828dc5afade576c2194d741  /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-pilot.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-pilot.opb
IDLAUNCH: 11095
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.215
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		: 451.215
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:        503808 kB
Buffers:         24608 kB
Cached:         481748 kB
SwapCached:        516 kB
Active:         126856 kB
Inactive:       381460 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        503556 kB
SwapTotal:     2097892 kB
SwapFree:      2096480 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5116 kB
Slab:            16900 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 10:09:28 (client local time) WITH STATUS 0 IN 0.243961 SECONDS
stats: 11095 7 0.243961 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-pilot.opb ......
PBS4: sat_solver.cpp:195: void parse_obj_fct(vnumcoeff&, char*&, int&, int&): Assertion `coeff !=0' failed.
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Raw data (loadavg): 0.93 0.98 0.99 2/54 3929
Raw data (stat): 3929 (runsolver) R 3928 27565 27564 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 544246413 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+0.247717 s]
Raw data (loadavg): 0.93 0.98 0.99 1/53 3929
Raw data (stat): 3929 (runsolver) R 3928 27565 27564 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 544246413 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child ended because it received signal 6 (SIGABRT)
Real time (s): 0.247435
CPU time (s): 0.243961
CPU user time (s): 0.164974
CPU system time (s): 0.078987
CPU usage (%): 98.596
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####