Solver Name | Answer | CPU time | Wall clock time |
---|---|---|---|
CASHWMaxSATDisjCom-S 2025-06-01 | UNSAT | 0.001792 | 0.00206808 |
Name | PB24/normalized-PB16/DEC-LIN/ quimper/SyncCodes/d_n_k/normalized-3_4_3.opb |
MD5SUM | ad6c727d87164d1ccd9cf0a88138548a |
Bench Category | DEC-LIN (decision problem, linear constraints, no UNSAT certificate) |
Best result obtained on this benchmark | UNSAT |
Best value of the objective obtained on this benchmark | |
Best CPU time to get the best result obtained on this benchmark | 0.001792 |
Has Objective Function | NO |
Satisfiable | |
(Un)Satisfiability was proved | |
Best value of the objective function | |
Optimality of the best value was proved | |
Number of variables | 42 |
Total number of constraints | 161 |
Number of constraints which are clauses | 156 |
Number of constraints which are cardinality constraints (but not clauses) | 5 |
Number of constraints which are nor clauses,nor cardinality constraints | 0 |
Minimum length of a constraint | 1 |
Maximum length of a constraint | 6 |
Number of terms in the objective function | 0 |
Biggest coefficient in the objective function | 0 |
Number of bits for the biggest coefficient in the objective function | 0 |
Sum of the numbers in the objective function | 0 |
Number of bits of the sum of numbers in the objective function | 0 |
Biggest number in a constraint | 3 |
Number of bits of the biggest number in a constraint | 2 |
Biggest sum of numbers in a constraint | 9 |
Number of bits of the biggest sum of numbers | 4 |
Number of products (including duplicates) | 0 |
Sum of products size (including duplicates) | 0 |
Number of different products | 0 |
Sum of products size | 0 |
0.00/0.00 c Using COMiniSatPS SAT solver by Chanseok Oh (2016) 0.00/0.00 s UNSATISFIABLE
ERROR: no interpretation found !
runsolver version 3.4.2 (svn: 4680) Copyright (C) 2010-2013 Olivier ROUSSEL This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. NUMA information: number of nodes: 2 memory of node 0: 63708 MiB (62751 MiB free) memory of node 1: 64465 MiB (63732 MiB free) node distances: 10 21 21 10 command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-4514793-1751226672/watcher-4514793-1751226672 -o /tmp/evaluation-result-4514793-1751226672/solver-4514793-1751226672 -C 3600 -W 3700 -M 31000 --bin-var /tmp/runsolver-exch-nodeC020-1751219447-29364 --watchdog 3760 CASHWMaxSAT-DisjCom-S HOME/instance-4514793-1751226672.opb -total-t=3600 -no-par -v0 running on 2 cores: 1,3 CPU governors: performance: 1 3 Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 3600 seconds Enforcing CPUTime limit (hard limit, will send SIGXCPU): 3630 seconds Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 3700 seconds Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 31744000 KiB Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 31795200 KiB Linux 5.14.0-503.14.1.el9_5.x86_64 Linux 5.14.0-503.14.1.el9_5.x86_64 Starting watchdog thread solver pid=30909, runsolver pid=30906 Current StackSize limit: 8192 KiB [startup+0.0020471 s] # the end of solver process 30909 was just reported to runsolver # Child status: 20 # cumulated CPU time of all completed processes: user=0.001792 s, system=0 s Solver just ended. ??? end of watcher thread Dumping a history of the last processes samples Child status: 20 Real time (s): 0.00206808 CPU time (s): 0.001792 CPU user time (s): 0.001792 CPU system time (s): 0 CPU usage (%): 86.6505 Max. virtual memory (cumulated for all children) (KiB): 0 Max. memory (cumulated for all children) (KiB): 0 getrusage(RUSAGE_CHILDREN,...) data: user time used= 0.001792 system time used= 0 maximum resident set size= 4016 integral shared memory size= 0 integral unshared data size= 0 integral unshared stack size= 0 page reclaims= 285 page faults= 0 swaps= 0 block input operations= 0 block output operations= 0 messages sent= 0 messages received= 0 signals received= 0 voluntary context switches= 3 involuntary context switches= 0 # summary of solver processes directly reported to runsolver: # pid: 30909 # total CPU time (s): 0.001792 # total CPU user time (s): 0.001792 # total CPU system time (s): 0 ??? join timestamper begins ??? join timestamper ends ??? end of timestamper thread runsolver used 0.004314 second user time and 0.009683 second system time The end
Begin job on nodeC020 at 2025-06-29 21:51:13 IDJOB=4514793 IDBENCH=162915 IDSOLVER=3323 FILE ID=nodeC020/4514793-1751226672 RUNJOBID= nodeC020-1751219447-29364 SLURM_JOB_ID= 9587672 Free space on /tmp= 433024 MiB SOLVER NAME= CASHWMaxSATDisjCom-S 2025-06-01 BENCH NAME= PB24/normalized-PB16/DEC-LIN/quimper/SyncCodes/d_n_k/normalized-3_4_3.opb COMMAND LINE= CASHWMaxSAT-DisjCom-S BENCHNAME -total-t=TIMEOUT -no-par -v0 RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-4514793-1751226672/watcher-4514793-1751226672 -o /tmp/evaluation-result-4514793-1751226672/solver-4514793-1751226672 -C 3600 -W 3700 -M 31000 --bin-var /tmp/runsolver-exch-nodeC020-1751219447-29364 --watchdog 3760 CASHWMaxSAT-DisjCom-S HOME/instance-4514793-1751226672.opb -total-t=3600 -no-par -v0 TIME LIMIT= 3600 seconds MEMORY LIMIT= 31000 MiB NBCORE= 2 MD5SUM BENCH= ad6c727d87164d1ccd9cf0a88138548a RANDOM SEED=866594294 nodeC020 Linux 5.14.0-503.14.1.el9_5.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Nov 15 12:04:32 UTC 2024 /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor: performance /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz stepping : 1 microcode : 0xb00002a cpu MHz : 3599.855 cache size : 15360 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 pti ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts vnmi vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs pml ept_violation_ve bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit mmio_stale_data bogomips : 6999.79 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz stepping : 1 microcode : 0xb00002a cpu MHz : 3600.316 cache size : 15360 KB physical id : 1 siblings : 4 core id : 0 cpu cores : 4 apicid : 16 initial apicid : 16 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 pti ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts vnmi vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs pml ept_violation_ve bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit mmio_stale_data bogomips : 6999.79 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz stepping : 1 microcode : 0xb00002a cpu MHz : 3648.527 cache size : 15360 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 4 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 pti ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts vnmi vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs pml ept_violation_ve bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit mmio_stale_data bogomips : 6999.79 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz stepping : 1 microcode : 0xb00002a cpu MHz : 3598.736 cache size : 15360 KB physical id : 1 siblings : 4 core id : 1 cpu cores : 4 apicid : 18 initial apicid : 18 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 pti ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts vnmi vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs pml ept_violation_ve bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit mmio_stale_data bogomips : 6999.79 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 4 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz stepping : 1 microcode : 0xb00002a cpu MHz : 3599.887 cache size : 15360 KB physical id : 0 siblings : 4 core id : 2 cpu cores : 4 apicid : 4 initial apicid : 4 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 pti ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts vnmi vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs pml ept_violation_ve bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit mmio_stale_data bogomips : 6999.79 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 5 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz stepping : 1 microcode : 0xb00002a cpu MHz : 3599.937 cache size : 15360 KB physical id : 1 siblings : 4 core id : 2 cpu cores : 4 apicid : 20 initial apicid : 20 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 pti ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts vnmi vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs pml ept_violation_ve bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit mmio_stale_data bogomips : 6999.79 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 6 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz stepping : 1 microcode : 0xb00002a cpu MHz : 3605.484 cache size : 15360 KB physical id : 0 siblings : 4 core id : 3 cpu cores : 4 apicid : 6 initial apicid : 6 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 pti ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts vnmi vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs pml ept_violation_ve bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit mmio_stale_data bogomips : 6999.79 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 7 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz stepping : 1 microcode : 0xb00002a cpu MHz : 3598.502 cache size : 15360 KB physical id : 1 siblings : 4 core id : 3 cpu cores : 4 apicid : 22 initial apicid : 22 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 pti ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts vnmi vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs pml ept_violation_ve bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa itlb_multihit mmio_stale_data bogomips : 6999.79 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: /proc/meminfo: MemTotal: 131249988 kB MemFree: 129519904 kB MemAvailable: 129659784 kB Buffers: 3280 kB Cached: 946468 kB SwapCached: 0 kB Active: 510604 kB Inactive: 639168 kB Active(anon): 218080 kB Inactive(anon): 0 kB Active(file): 292524 kB Inactive(file): 639168 kB Unevictable: 3072 kB Mlocked: 0 kB SwapTotal: 33010684 kB SwapFree: 33010684 kB Zswap: 0 kB Zswapped: 0 kB Dirty: 25836 kB Writeback: 0 kB AnonPages: 201400 kB Mapped: 112360 kB Shmem: 18056 kB KReclaimable: 94852 kB Slab: 181460 kB SReclaimable: 94852 kB SUnreclaim: 86608 kB KernelStack: 4288 kB PageTables: 3324 kB SecPageTables: 0 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 98635676 kB Committed_AS: 552824 kB VmallocTotal: 34359738367 kB VmallocUsed: 150504 kB VmallocChunk: 0 kB Percpu: 3776 kB HardwareCorrupted: 0 kB AnonHugePages: 129024 kB ShmemHugePages: 0 kB ShmemPmdMapped: 0 kB FileHugePages: 0 kB FilePmdMapped: 0 kB CmaTotal: 0 kB CmaFree: 0 kB Unaccepted: 0 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB Hugetlb: 0 kB DirectMap4k: 197332 kB DirectMap2M: 7962624 kB DirectMap1G: 127926272 kB Free space on /tmp at the end= 433012 MiB End job on nodeC020 at 2025-06-29 21:51:13