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-stocfor1.opb
MD5SUM7d2af3956088e44d3dd8bd225cfe1230
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 810
Biggest coefficient in the objective function 159153234378752000
Number of bits for the biggest coefficient in the objective function 58
Sum of the numbers in the objective function 3935910692489746509
Number of bits of the sum of numbers in the objective function 62
Biggest number in a constraint 159153234378752000
Number of bits of the biggest number in a constraint 58
Biggest sum of numbers in a constraint 3935910692489746509
Number of bits of the biggest sum of numbers62
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.226965
Number of variables3330
Total number of constraints117
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 constraints117
Minimum length of a constraint30
Maximum length of a constraint240

Trace number 17072 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc21 THE 2005-04-21 09:57:41 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11536 boxname=wulflinc21 idbench=888 idsolver=5 numberseed=0
MD5SUM SOLVER: 1d62365061f6d70b1a242542b016b2e4  /oldhome/oroussel/solvers/minisat+
MD5SUM BENCH:  7d2af3956088e44d3dd8bd225cfe1230  /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-stocfor1.opb
REAL COMMAND:  minisat+ /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-stocfor1.opb
IDLAUNCH: 11536
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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		: 451.161
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:        527700 kB
Buffers:          4856 kB
Cached:         479440 kB
SwapCached:          0 kB
Active:          64528 kB
Inactive:       422652 kB
HighTotal:      131008 kB
HighFree:          896 kB
LowTotal:       903652 kB
LowFree:        526804 kB
SwapTotal:     2097892 kB
SwapFree:      2097804 kB
Dirty:              48 kB
Writeback:           0 kB
Mapped:           6948 kB
Slab:            14236 kB
Committed_AS:    63796 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 09:57:41 (client local time) WITH STATUS 1 IN 0.011997 SECONDS
stats: 11536 7 0.011997 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Parsing PB file...
PARSE ERROR! [line 115] Integer overflow. Big numbers not supported yet.
#### 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): 1.10 0.97 0.92 2/55 8960
Raw data (stat): 8960 (runsolver) R 8959 30927 30926 0 -1 64 4 0 0 0 0 0 0 0 20 0 1 0 421440065 1052672 99 4294967295 134512640 135381576 3221224512 3221219756 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+0.018069 s]
Raw data (loadavg): 1.10 0.97 0.92 1/54 8960
Raw data (stat): 8960 (runsolver) R 8959 30927 30926 0 -1 64 4 0 0 0 0 0 0 0 20 0 1 0 421440065 1052672 99 4294967295 134512640 135381576 3221224512 3221219756 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: 1
Real time (s): 0.017818
CPU time (s): 0.011997
CPU user time (s): 0.006998
CPU system time (s): 0.004999
CPU usage (%): 67.3308
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####