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).
  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

Namenormalized-opb/mps-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-fit1p.opb
MD5SUM0417a8bac185d4a033d4915882b274ef
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
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 30780
Biggest coefficient in the objective function 1610612736
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 1591285381686
Number of bits of the sum of numbers in the objective function 41
Biggest number in a constraint 59431609958400
Number of bits of the biggest number in a constraint 46
Biggest sum of numbers in a constraint 209844586667159
Number of bits of the biggest sum of numbers48
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.394938
Number of variables45485
Total number of constraints1026
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 constraints1026
Minimum length of a constraint17
Maximum length of a constraint619

Trace number 22860 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc22 THE 2005-04-22 04:07:42 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=10796 boxname=wulflinc22 idbench=831 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  0417a8bac185d4a033d4915882b274ef  /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-fit1p.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-fit1p.opb
IDLAUNCH: 10796
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.031
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		: 451.031
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:        721344 kB
Buffers:         27452 kB
Cached:         249660 kB
SwapCached:      12296 kB
Active:          57992 kB
Inactive:       233148 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        721092 kB
SwapTotal:     2097892 kB
SwapFree:      2085136 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5204 kB
Slab:            16604 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-22 04:07:49 (client local time) WITH STATUS 20 IN 0.394938 SECONDS
stats: 10796 7 0.394938 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-fit1p.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.143978
#### 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): 0.82 0.99 0.96 2/54 17207
Raw data (stat): 17207 (runsolver) R 17206 26298 26297 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 550716415 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+0.399231 s]
Raw data (loadavg): 0.82 0.99 0.96 1/53 17207
Raw data (stat): 17207 (runsolver) R 17206 26298 26297 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 550716415 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 20
Real time (s): 0.398935
CPU time (s): 0.394938
CPU user time (s): 0.328949
CPU system time (s): 0.065989
CPU usage (%): 98.9981
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####