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-neos20.opb
MD5SUM7fb6e53cf6908940d4f4a33c8adba436
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -58624
Optimality of the best value was proved NO
Number of terms in the objective function 100
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 5242875
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 167772160
Number of bits of the biggest number in a constraint 28
Biggest sum of numbers in a constraint 336554495
Number of bits of the biggest sum of numbers29
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark7.82681
Number of variables5948
Total number of constraints3344
Number of constraints which are clauses412
Number of constraints which are cardinality constraints (but not clauses)1282
Number of constraints which are nor clauses,nor cardinality constraints1650
Minimum length of a constraint1
Maximum length of a constraint180

Trace number 13993 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc17 THE 2005-04-20 22:53:03 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=19660 boxname=wulflinc17 idbench=1513 idsolver=4 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  7fb6e53cf6908940d4f4a33c8adba436  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-13-7-neos20.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-13-7-neos20.opb
IDLAUNCH: 19660
/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:        668512 kB
Buffers:         33444 kB
Cached:         300184 kB
SwapCached:         48 kB
Active:          96328 kB
Inactive:       240320 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        668260 kB
SwapTotal:     2097892 kB
SwapFree:      2097840 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           7032 kB
Slab:            23780 kB
Committed_AS:    63820 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-20 22:53:04 (client local time) WITH STATUS 0 IN 0.970851 SECONDS
stats: 19660 7 0.970851 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
galena: solver.cpp:433: int cutting_plane(Solver&, ConstraintDB&, int): Assertion `plane.goal() > 0' failed.
#### 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): 0.65 0.80 0.85 2/55 18638
Raw data (stat): 18638 (runsolver) R 18637 20838 20837 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 540196152 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 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+0.974492 s]
Raw data (loadavg): 0.65 0.80 0.85 1/54 18638
Raw data (stat): 18638 (runsolver) R 18637 20838 20837 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 540196152 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 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 ended because it received signal 6 (SIGABRT)
Real time (s): 0.974216
CPU time (s): 0.970851
CPU user time (s): 0.941856
CPU system time (s): 0.028995
CPU usage (%): 99.6546
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####