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-dcmulti.opb
MD5SUM2c1654041c7ed087aa8883df6d85cbf7
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 14235
Biggest coefficient in the objective function 714038312960
Number of bits for the biggest coefficient in the objective function 40
Sum of the numbers in the objective function 68224730472397
Number of bits of the sum of numbers in the objective function 46
Biggest number in a constraint 714038312960
Number of bits of the biggest number in a constraint 40
Biggest sum of numbers in a constraint 68224730472397
Number of bits of the biggest sum of numbers46
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.12598
Number of variables14265
Total number of constraints365
Number of constraints which are clauses27
Number of constraints which are cardinality constraints (but not clauses)80
Number of constraints which are nor clauses,nor cardinality constraints258
Minimum length of a constraint1
Maximum length of a constraint420

Trace number 28722 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc15 THE 2005-05-25 04:04:04 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11766 boxname=wulflinc15 idbench=906 idsolver=1 numberseed=0
MD5SUM SOLVER: e973bb179fd0e01ec8c7277096f1c3ef  /oldhome/oroussel/solvers/bsolo_lpr
MD5SUM BENCH:  2c1654041c7ed087aa8883df6d85cbf7  /oldhome/oroussel/tmp/wulflinc15/normalized-mps-v2-20-10-dcmulti.opb
REAL COMMAND:  bsolo_lpr /oldhome/oroussel/tmp/wulflinc15/normalized-mps-v2-20-10-dcmulti.opb
IDLAUNCH: 11766
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 450.999
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	: 2
cpu MHz		: 450.999
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:        903044 kB
Buffers:         12016 kB
Cached:          97540 kB
SwapCached:        672 kB
Active:          26888 kB
Inactive:        84768 kB
HighTotal:      131008 kB
HighFree:        51688 kB
LowTotal:       903652 kB
LowFree:        851356 kB
SwapTotal:     2097136 kB
SwapFree:      2095624 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5076 kB
Slab:            14352 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-25 04:04:36 (client local time) WITH STATUS 20 IN 30.9703 SECONDS
stats: 11766 7 30.9703 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 14265 variables and 308 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 30.944 s
#### 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): 0.79 0.92 0.95 2/54 3832
Raw data (stat): 3832 (runsolver) R 3831 23514 23513 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 777626436 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 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+10.0014 s]
Raw data (loadavg): 0.82 0.93 0.95 2/54 3832
Raw data (stat): 3832 (bsolo_lpr) R 3831 23514 23513 0 -1 0 2579 0 0 0 973 7 0 0 25 0 1 0 777626436 23416832 2503 4294967295 134512640 134714508 3221224592 3221222820 1077414351 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 5717 2503 1111 63 0 5654 0
vsize: 22868
[startup+20.0022 s]
Raw data (loadavg): 0.85 0.93 0.95 2/54 3832
Raw data (stat): 3832 (bsolo_lpr) R 3831 23514 23513 0 -1 0 5010 0 0 0 1967 14 0 0 25 0 1 0 777626436 33456128 4934 4294967295 134512640 134714508 3221224592 3221222820 1077414435 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 8168 4934 1111 63 0 8105 0
vsize: 32672
[startup+30.0023 s]
Raw data (loadavg): 0.87 0.93 0.95 2/54 3832
Raw data (stat): 3832 (bsolo_lpr) R 3831 23514 23513 0 -1 0 8243 0 0 0 2960 21 0 0 25 0 1 0 777626436 46612480 8167 4294967295 134512640 134714508 3221224592 3221222508 1077270109 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 11380 8167 1111 63 0 11317 0
vsize: 45520
[startup+31.1616 s]
Raw data (loadavg): 0.87 0.93 0.95 1/53 3832
Raw data (stat): 3832 (bsolo_lpr) R 3831 23514 23513 0 -1 0 8243 0 0 0 2960 21 0 0 25 0 1 0 777626436 46612480 8167 4294967295 134512640 134714508 3221224592 3221222508 1077270109 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 11380 8167 1111 63 0 11317 0
vsize: 0

Child status: 20
Real time (s): 31.1612
CPU time (s): 30.9703
CPU user time (s): 30.6993
CPU system time (s): 0.270958
CPU usage (%): 99.3873
Max. virtual memory (Kb): 45520
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####