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/MIPLIB/miplib3/normalized-mps-v2-20-10-qnet1_o.opb
MD5SUMbf1b0bf5e7a010c339b0158758f6f277
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 3720
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 133143986052
Number of bits of the sum of numbers in the objective function 37
Biggest number in a constraint 8388608000000
Number of bits of the biggest number in a constraint 43
Biggest sum of numbers in a constraint 17124187591735
Number of bits of the biggest sum of numbers44
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.055991
Number of variables5380
Total number of constraints585
Number of constraints which are clauses32
Number of constraints which are cardinality constraints (but not clauses)48
Number of constraints which are nor clauses,nor cardinality constraints505
Minimum length of a constraint2
Maximum length of a constraint54

Trace number 20990 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc20 THE 2005-04-21 22:41:10 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=13824 boxname=wulflinc20 idbench=1064 idsolver=5 numberseed=0
MD5SUM SOLVER: 1d62365061f6d70b1a242542b016b2e4  /oldhome/oroussel/solvers/minisat+
MD5SUM BENCH:  bf1b0bf5e7a010c339b0158758f6f277  /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-qnet1_o.opb
REAL COMMAND:  minisat+ /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-qnet1_o.opb
IDLAUNCH: 13824
/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:        678176 kB
Buffers:         24620 kB
Cached:         308472 kB
SwapCached:        516 kB
Active:          38728 kB
Inactive:       296372 kB
HighTotal:      131008 kB
HighFree:         1176 kB
LowTotal:       903652 kB
LowFree:        677000 kB
SwapTotal:     2097892 kB
SwapFree:      2096480 kB
Dirty:              36 kB
Writeback:           0 kB
Mapped:           5116 kB
Slab:            15752 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 22:41:10 (client local time) WITH STATUS 1 IN 0.086986 SECONDS
stats: 13824 7 0.086986 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
ERROR! Too large constants encountered in constraint.
c Parsing PB file...
#### 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): 0.77 0.95 0.91 1/54 15238
Raw data (stat): 15238 (runsolver) D 15237 27565 27564 0 -1 64 4 0 0 0 0 0 0 0 18 0 1 0 548757270 1052672 99 4294967295 134512640 135381576 3221224512 3221219756 135158418 0 2147483391 7 90112 3225161850 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+0.122691 s]
Raw data (loadavg): 0.77 0.95 0.91 1/53 15238
Raw data (stat): 15238 (runsolver) D 15237 27565 27564 0 -1 64 4 0 0 0 0 0 0 0 18 0 1 0 548757270 1052672 99 4294967295 134512640 135381576 3221224512 3221219756 135158418 0 2147483391 7 90112 3225161850 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 1
Real time (s): 0.122394
CPU time (s): 0.086986
CPU user time (s): 0.070989
CPU system time (s): 0.015997
CPU usage (%): 71.0705
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####