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-v2-13-7/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-neos17.opb
MD5SUM0094639e675238eae16e44b5d375cf2e
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 2269138
Optimality of the best value was proved NO
Number of terms in the objective function 1610
Biggest coefficient in the objective function 3457920
Number of bits for the biggest coefficient in the objective function 22
Sum of the numbers in the objective function 13794172
Number of bits of the sum of numbers in the objective function 24
Biggest number in a constraint 1638400000000
Number of bits of the biggest number in a constraint 41
Biggest sum of numbers in a constraint 39322360302947
Number of bits of the biggest sum of numbers46
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1228.72
Number of variables2300
Total number of constraints971
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)300
Number of constraints which are nor clauses,nor cardinality constraints671
Minimum length of a constraint1
Maximum length of a constraint520

Trace number 14577 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc12 THE 2005-04-21 00:38:50 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=19609 boxname=wulflinc12 idbench=1509 idsolver=5 numberseed=0
MD5SUM SOLVER: 1d62365061f6d70b1a242542b016b2e4  /oldhome/oroussel/solvers/minisat+
MD5SUM BENCH:  0094639e675238eae16e44b5d375cf2e  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-neos17.opb
REAL COMMAND:  minisat+ /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-neos17.opb
IDLAUNCH: 19609
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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	: 2
cpu MHz		: 451.091
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:        856780 kB
Buffers:         13368 kB
Cached:         142240 kB
SwapCached:        316 kB
Active:          16160 kB
Inactive:       141736 kB
HighTotal:      131008 kB
HighFree:        58744 kB
LowTotal:       903652 kB
LowFree:        798036 kB
SwapTotal:     2097136 kB
SwapFree:      2096236 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5744 kB
Slab:            14160 kB
Committed_AS:    63592 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-21 00:38:50 (client local time) WITH STATUS 1 IN 0.040993 SECONDS
stats: 19609 7 0.040993 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Parsing PB file...
PARSE ERROR! [line 1026] 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): 0.66 0.88 0.88 2/54 17672
Raw data (stat): 17672 (runsolver) R 17671 25285 25284 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 482597923 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+0.046784 s]
Raw data (loadavg): 0.66 0.88 0.88 1/53 17672
Raw data (stat): 17672 (runsolver) R 17671 25285 25284 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 482597923 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): 0.046498
CPU time (s): 0.040993
CPU user time (s): 0.030995
CPU system time (s): 0.009998
CPU usage (%): 88.1608
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####