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/miplib/normalized-mps-v2-20-10-bell4.opb
MD5SUM3cce8c056d32fd25c784b4e9cbdd2db6
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 2147483647
Optimality of the best value was proved NO
Number of terms in the objective function 1527
Biggest coefficient in the objective function 4949278720000000
Number of bits for the biggest coefficient in the objective function 53
Sum of the numbers in the objective function 114314457147588882
Number of bits of the sum of numbers in the objective function 57
Biggest number in a constraint 4949278720000000
Number of bits of the biggest number in a constraint 53
Biggest sum of numbers in a constraint 114314457147588882
Number of bits of the biggest sum of numbers57
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1226.37
Number of variables1996
Total number of constraints169
Number of constraints which are clauses18
Number of constraints which are cardinality constraints (but not clauses)34
Number of constraints which are nor clauses,nor cardinality constraints117
Minimum length of a constraint1
Maximum length of a constraint135

Trace number 34106 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc17 THE 2005-05-27 19:46:13 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11721 boxname=wulflinc17 idbench=902 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322  /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH:  3cce8c056d32fd25c784b4e9cbdd2db6  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-bell4.opb
REAL COMMAND:  vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-bell4.opb 0
IDLAUNCH: 11721
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        603896 kB
Buffers:         34960 kB
Cached:         374496 kB
SwapCached:        584 kB
Active:          75184 kB
Inactive:       336704 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        603644 kB
SwapTotal:     2097892 kB
SwapFree:      2096524 kB
Dirty:             172 kB
Writeback:           0 kB
Mapped:           5300 kB
Slab:            13232 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-27 19:46:14 (client local time) WITH STATUS 20 IN 0.152975 SECONDS
stats: 11721 7 0.152975 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
1:
result: proof of false found (0)
times:
0m0.018s 0m0.008s
0m0.062s 0m0.012s
s UNSATISFIABLE
#### 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
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.91 0.97 0.93 2/54 15503
Raw data (stat): 15503 (runsolver) R 15502 7475 7474 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 858802263 884736 94 4294967295 134512640 135332820 3221224448 3221219612 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+0.487872 s]
Raw data (loadavg): 0.91 0.97 0.93 1/53 15510
Raw data (stat): 15503 (runsolver) R 15502 7475 7474 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 858802263 884736 94 4294967295 134512640 135332820 3221224448 3221219612 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 0

Child status: 20
Real time (s): 0.487638
CPU time (s): 0.152975
CPU user time (s): 0.099984
CPU system time (s): 0.052991
CPU usage (%): 31.3706
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####