./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7918e78c7fa8e57a6cd382ed800c3c73f2f498c616ea3e9ed6a8775509cf80ff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:40,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:40,190 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:32:40,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:40,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:40,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:40,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:40,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:40,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:40,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:40,246 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:40,247 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:40,247 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:40,249 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:40,249 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:40,250 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:40,250 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:40,251 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:40,251 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:40,251 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:40,252 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:40,252 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:40,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:40,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:40,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:40,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:40,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:40,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:40,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:40,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:40,258 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:40,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:40,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:40,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:40,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:40,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:40,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:40,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:40,260 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:40,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:40,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:40,260 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:40,261 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:40,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:40,262 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7918e78c7fa8e57a6cd382ed800c3c73f2f498c616ea3e9ed6a8775509cf80ff [2023-11-23 20:32:40,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:40,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:40,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:40,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:40,551 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:40,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2023-11-23 20:32:43,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:44,438 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:44,439 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2023-11-23 20:32:44,498 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/data/1c4bd0c92/db3cfdcbf54b488dba86c566a0e55360/FLAGd1d419fec [2023-11-23 20:32:44,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/data/1c4bd0c92/db3cfdcbf54b488dba86c566a0e55360 [2023-11-23 20:32:44,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:44,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:44,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:44,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:44,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:44,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:44" (1/1) ... [2023-11-23 20:32:44,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebf55f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:44, skipping insertion in model container [2023-11-23 20:32:44,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:44" (1/1) ... [2023-11-23 20:32:44,723 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:47,436 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[325202,325215] [2023-11-23 20:32:47,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:47,537 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:47,664 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6154] [2023-11-23 20:32:47,666 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6156] [2023-11-23 20:32:47,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6166] [2023-11-23 20:32:47,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [6174-6175] [2023-11-23 20:32:47,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6351] [2023-11-23 20:32:47,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6354] [2023-11-23 20:32:47,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6357] [2023-11-23 20:32:47,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6360] [2023-11-23 20:32:47,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [6394] [2023-11-23 20:32:47,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [6401] [2023-11-23 20:32:47,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [6409-6410] [2023-11-23 20:32:47,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [6449] [2023-11-23 20:32:47,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [6452] [2023-11-23 20:32:47,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (val)); [6454] [2023-11-23 20:32:47,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [6459] [2023-11-23 20:32:47,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [6462] [2023-11-23 20:32:47,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [6464] [2023-11-23 20:32:47,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [6469] [2023-11-23 20:32:47,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [6472] [2023-11-23 20:32:47,680 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [6474] [2023-11-23 20:32:47,680 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [6479] [2023-11-23 20:32:47,681 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [6482] [2023-11-23 20:32:47,681 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (val)); [6484] [2023-11-23 20:32:47,682 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [6502] [2023-11-23 20:32:47,682 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [6505] [2023-11-23 20:32:47,682 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (- val)); [6507] [2023-11-23 20:32:47,683 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [6512] [2023-11-23 20:32:47,683 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [6515] [2023-11-23 20:32:47,683 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [6517] [2023-11-23 20:32:47,684 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [6522] [2023-11-23 20:32:47,684 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [6525] [2023-11-23 20:32:47,684 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [6527] [2023-11-23 20:32:47,685 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [6532] [2023-11-23 20:32:47,685 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [6535] [2023-11-23 20:32:47,685 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (- val)); [6537] [2023-11-23 20:32:47,688 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6617] [2023-11-23 20:32:47,688 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6624] [2023-11-23 20:32:47,699 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/skbuff.h"), "i" (1056), "i" (12UL)); [6887-6888] [2023-11-23 20:32:47,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/skbuff.h"), "i" (1714), "i" (12UL)); [7054-7055] [2023-11-23 20:32:47,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/11985/dscv_tempdir/dscv/ri/43_2a/drivers/net/ppp/ppp_generic.c"), "i" (291), "i" (12UL)); [7404-7405] [2023-11-23 20:32:47,806 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret), "+m" (tmp___1->state): : "memory", "cc"); [7566-7567] [2023-11-23 20:32:47,807 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret), "+m" (tmp___2->state): : "memory", "cc"); [7571-7572] [2023-11-23 20:32:47,807 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret), "+m" (tmp___3->state): : "memory", "cc"); [7576-7577] [2023-11-23 20:32:47,808 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret), "+m" (tmp___4->state): : "memory", "cc"); [7581-7582] [2023-11-23 20:32:47,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret___0), "+m" (tmp___8->state): : "memory", "cc"); [7628-7629] [2023-11-23 20:32:47,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret___0), "+m" (tmp___9->state): : "memory", "cc"); [7633-7634] [2023-11-23 20:32:47,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret___0), "+m" (tmp___10->state): : "memory", "cc"); [7638-7639] [2023-11-23 20:32:47,811 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret___0), "+m" (tmp___11->state): : "memory", "cc"); [7643-7644] [2023-11-23 20:32:47,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (p), "i" (4UL)); [7886-7887] [2023-11-23 20:32:47,829 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___0), "=r" (__val_gu___0): "0" (p), "i" (4UL)); [7927-7928] [2023-11-23 20:32:47,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___1), "=r" (__val_gu___1): "0" (p), "i" (4UL)); [7940-7941] [2023-11-23 20:32:47,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7970] [2023-11-23 20:32:47,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7973] [2023-11-23 20:32:47,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7976] [2023-11-23 20:32:47,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7979] [2023-11-23 20:32:47,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7982] [2023-11-23 20:32:47,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8001-8002] [2023-11-23 20:32:47,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8005-8006] [2023-11-23 20:32:47,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8009-8010] [2023-11-23 20:32:47,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8013-8014] [2023-11-23 20:32:47,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8017-8018] [2023-11-23 20:32:47,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___2), "=r" (__val_gu___2): "0" (p), "i" (4UL)); [8031-8032] [2023-11-23 20:32:47,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8047-8048] [2023-11-23 20:32:47,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8051-8052] [2023-11-23 20:32:47,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8055-8056] [2023-11-23 20:32:47,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8059-8060] [2023-11-23 20:32:47,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8063-8064] [2023-11-23 20:32:47,843 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___3), "=r" (__val_gu___3): "0" (p), "i" (4UL)); [8087-8088] [2023-11-23 20:32:47,848 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___4), "=r" (__val_gu___4): "0" (p), "i" (4UL)); [8202-8203] [2023-11-23 20:32:47,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (p), "i" (4UL)); [8247-8248] [2023-11-23 20:32:47,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8267] [2023-11-23 20:32:47,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8270] [2023-11-23 20:32:47,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8273] [2023-11-23 20:32:47,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8276] [2023-11-23 20:32:47,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8279] [2023-11-23 20:32:47,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___0), "=r" (__val_gu___0): "0" (p), "i" (4UL)); [8292-8293] [2023-11-23 20:32:47,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___1), "=r" (__val_gu___1): "0" (p), "i" (4UL)); [8314-8315] [2023-11-23 20:32:48,017 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[325202,325215] [2023-11-23 20:32:48,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:48,203 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:32:48,203 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:32:48,203 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:32:48,211 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:48,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48 WrapperNode [2023-11-23 20:32:48,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:48,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:48,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:48,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:48,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,535 INFO L138 Inliner]: procedures = 336, calls = 2319, calls flagged for inlining = 156, calls inlined = 154, statements flattened = 6333 [2023-11-23 20:32:48,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:48,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:48,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:48,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:48,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:48,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:48,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:48,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:48,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (1/1) ... [2023-11-23 20:32:48,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:48,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:49,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:49,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c97145c1-2879-4008-b21b-6648d938e472/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2023-11-23 20:32:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2023-11-23 20:32:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-23 20:32:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-23 20:32:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2023-11-23 20:32:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2023-11-23 20:32:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2023-11-23 20:32:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2023-11-23 20:32:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-23 20:32:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2023-11-23 20:32:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2023-11-23 20:32:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:32:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2023-11-23 20:32:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2023-11-23 20:32:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:32:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:32:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:32:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:32:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:32:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-23 20:32:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-23 20:32:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2023-11-23 20:32:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2023-11-23 20:32:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2023-11-23 20:32:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2023-11-23 20:32:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2023-11-23 20:32:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2023-11-23 20:32:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2023-11-23 20:32:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2023-11-23 20:32:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2023-11-23 20:32:49,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2023-11-23 20:32:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 20:32:49,057 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 20:32:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-11-23 20:32:49,058 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-11-23 20:32:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 20:32:49,059 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 20:32:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 20:32:49,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 20:32:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:32:49,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:32:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2023-11-23 20:32:49,059 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2023-11-23 20:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure bpf_prog_destroy [2023-11-23 20:32:49,060 INFO L138 BoogieDeclarations]: Found implementation of procedure bpf_prog_destroy [2023-11-23 20:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2023-11-23 20:32:49,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2023-11-23 20:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2023-11-23 20:32:49,060 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2023-11-23 20:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 20:32:49,061 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 20:32:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:32:49,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:32:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2023-11-23 20:32:49,062 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2023-11-23 20:32:49,062 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-23 20:32:49,063 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-23 20:32:49,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:32:49,063 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:32:49,063 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2023-11-23 20:32:49,064 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2023-11-23 20:32:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:32:49,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:32:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 20:32:49,064 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 20:32:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-23 20:32:49,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-23 20:32:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:32:49,068 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:32:49,069 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2023-11-23 20:32:49,069 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2023-11-23 20:32:49,069 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2023-11-23 20:32:49,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2023-11-23 20:32:49,070 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 20:32:49,071 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 20:32:49,071 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2023-11-23 20:32:49,071 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2023-11-23 20:32:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:32:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 20:32:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 20:32:49,078 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 20:32:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2023-11-23 20:32:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2023-11-23 20:32:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-23 20:32:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-23 20:32:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure bpf_prog_create [2023-11-23 20:32:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure bpf_prog_create [2023-11-23 20:32:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:32:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2023-11-23 20:32:49,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2023-11-23 20:32:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-11-23 20:32:49,080 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-11-23 20:32:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-23 20:32:49,080 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-23 20:32:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2023-11-23 20:32:49,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2023-11-23 20:32:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 20:32:49,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 20:32:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 20:32:49,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 20:32:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:32:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:32:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2023-11-23 20:32:49,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2023-11-23 20:32:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2023-11-23 20:32:49,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2023-11-23 20:32:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:32:49,082 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:32:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-23 20:32:49,083 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-23 20:32:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-23 20:32:49,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-23 20:32:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 20:32:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 20:32:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 20:32:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 20:32:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 20:32:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 20:32:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2023-11-23 20:32:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2023-11-23 20:32:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 20:32:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 20:32:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 20:32:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 20:32:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 20:32:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 20:32:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2023-11-23 20:32:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2023-11-23 20:32:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2023-11-23 20:32:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2023-11-23 20:32:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:32:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:32:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2023-11-23 20:32:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2023-11-23 20:32:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:32:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2023-11-23 20:32:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2023-11-23 20:32:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 20:32:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 20:32:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2023-11-23 20:32:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2023-11-23 20:32:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2023-11-23 20:32:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2023-11-23 20:32:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:32:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2023-11-23 20:32:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2023-11-23 20:32:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-23 20:32:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-23 20:32:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:32:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 20:32:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 20:32:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2023-11-23 20:32:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2023-11-23 20:32:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2023-11-23 20:32:49,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2023-11-23 20:32:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2023-11-23 20:32:49,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2023-11-23 20:32:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2023-11-23 20:32:49,090 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2023-11-23 20:32:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 20:32:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 20:32:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2023-11-23 20:32:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2023-11-23 20:32:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2023-11-23 20:32:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2023-11-23 20:32:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2023-11-23 20:32:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2023-11-23 20:32:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2023-11-23 20:32:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2023-11-23 20:32:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2023-11-23 20:32:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2023-11-23 20:32:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 20:32:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 20:32:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2023-11-23 20:32:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2023-11-23 20:32:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2023-11-23 20:32:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2023-11-23 20:32:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_39 [2023-11-23 20:32:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_39 [2023-11-23 20:32:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:32:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:32:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2023-11-23 20:32:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2023-11-23 20:32:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2023-11-23 20:32:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2023-11-23 20:32:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2023-11-23 20:32:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2023-11-23 20:32:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:32:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-23 20:32:49,095 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-23 20:32:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2023-11-23 20:32:49,095 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2023-11-23 20:32:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-11-23 20:32:49,095 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-11-23 20:32:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2023-11-23 20:32:49,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2023-11-23 20:32:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2023-11-23 20:32:49,100 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2023-11-23 20:32:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:32:49,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:32:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2023-11-23 20:32:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2023-11-23 20:32:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 20:32:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 20:32:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2023-11-23 20:32:49,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2023-11-23 20:32:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2023-11-23 20:32:49,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2023-11-23 20:32:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:32:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 20:32:49,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 20:32:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-23 20:32:49,103 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-23 20:32:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-23 20:32:49,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-23 20:32:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-23 20:32:49,103 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-23 20:32:49,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:32:49,105 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2023-11-23 20:32:49,105 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2023-11-23 20:32:49,105 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 20:32:49,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2023-11-23 20:32:49,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2023-11-23 20:32:49,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:32:49,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:32:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2023-11-23 20:32:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2023-11-23 20:32:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2023-11-23 20:32:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2023-11-23 20:32:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_printk [2023-11-23 20:32:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_printk [2023-11-23 20:32:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-23 20:32:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-23 20:32:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 20:32:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 20:32:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-23 20:32:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-23 20:32:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2023-11-23 20:32:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2023-11-23 20:32:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-23 20:32:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-23 20:32:49,108 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-11-23 20:32:49,108 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-11-23 20:32:49,108 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-23 20:32:49,108 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-23 20:32:49,108 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2023-11-23 20:32:49,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2023-11-23 20:32:49,108 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:32:49,109 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:32:49,109 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2023-11-23 20:32:49,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2023-11-23 20:32:49,109 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2023-11-23 20:32:49,109 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2023-11-23 20:32:49,109 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 20:32:49,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 20:32:49,109 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2023-11-23 20:32:49,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2023-11-23 20:32:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2023-11-23 20:32:49,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2023-11-23 20:32:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2023-11-23 20:32:49,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2023-11-23 20:32:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:32:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2023-11-23 20:32:49,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2023-11-23 20:32:49,111 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-23 20:32:49,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-23 20:32:49,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:49,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:49,111 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2023-11-23 20:32:49,111 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2023-11-23 20:32:49,111 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 20:32:49,111 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 20:32:50,031 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:50,037 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:50,761 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:32:55,786 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:59,309 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:59,311 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:32:59,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:59 BoogieIcfgContainer [2023-11-23 20:32:59,314 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:59,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:59,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:59,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:59,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:44" (1/3) ... [2023-11-23 20:32:59,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8777dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:59, skipping insertion in model container [2023-11-23 20:32:59,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:48" (2/3) ... [2023-11-23 20:32:59,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8777dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:59, skipping insertion in model container [2023-11-23 20:32:59,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:59" (3/3) ... [2023-11-23 20:32:59,326 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2023-11-23 20:32:59,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:59,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:32:59,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:59,479 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ea489af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:59,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:32:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 1687 states, 1014 states have (on average 1.3530571992110454) internal successors, (1372), 1083 states have internal predecessors, (1372), 545 states have call successors, (545), 127 states have call predecessors, (545), 126 states have return successors, (540), 520 states have call predecessors, (540), 540 states have call successors, (540) [2023-11-23 20:32:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-23 20:32:59,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:59,531 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:59,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:59,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:59,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1220501296, now seen corresponding path program 1 times [2023-11-23 20:32:59,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:59,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028675180] [2023-11-23 20:32:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:59,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-11-23 20:33:00,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:00,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028675180] [2023-11-23 20:33:00,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028675180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:00,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:00,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:00,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050146984] [2023-11-23 20:33:00,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:00,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:00,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:00,710 INFO L87 Difference]: Start difference. First operand has 1687 states, 1014 states have (on average 1.3530571992110454) internal successors, (1372), 1083 states have internal predecessors, (1372), 545 states have call successors, (545), 127 states have call predecessors, (545), 126 states have return successors, (540), 520 states have call predecessors, (540), 540 states have call successors, (540) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 20:33:03,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:08,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:08,166 INFO L93 Difference]: Finished difference Result 4485 states and 6592 transitions. [2023-11-23 20:33:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:08,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 177 [2023-11-23 20:33:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:08,240 INFO L225 Difference]: With dead ends: 4485 [2023-11-23 20:33:08,241 INFO L226 Difference]: Without dead ends: 2786 [2023-11-23 20:33:08,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:08,270 INFO L413 NwaCegarLoop]: 2486 mSDtfsCounter, 1665 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 4588 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:08,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 4588 Invalid, 620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 615 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2023-11-23 20:33:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2023-11-23 20:33:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2783. [2023-11-23 20:33:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 1675 states have (on average 1.3408955223880596) internal successors, (2246), 1786 states have internal predecessors, (2246), 873 states have call successors, (873), 235 states have call predecessors, (873), 234 states have return successors, (872), 834 states have call predecessors, (872), 872 states have call successors, (872) [2023-11-23 20:33:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3991 transitions. [2023-11-23 20:33:08,704 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3991 transitions. Word has length 177 [2023-11-23 20:33:08,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:08,708 INFO L495 AbstractCegarLoop]: Abstraction has 2783 states and 3991 transitions. [2023-11-23 20:33:08,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 20:33:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3991 transitions. [2023-11-23 20:33:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-23 20:33:08,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:08,728 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:08,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:33:08,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:08,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:08,730 INFO L85 PathProgramCache]: Analyzing trace with hash -356712800, now seen corresponding path program 1 times [2023-11-23 20:33:08,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:08,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334296668] [2023-11-23 20:33:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:08,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-11-23 20:33:09,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:09,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334296668] [2023-11-23 20:33:09,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334296668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:09,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:09,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832318076] [2023-11-23 20:33:09,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:09,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:09,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:09,511 INFO L87 Difference]: Start difference. First operand 2783 states and 3991 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 20:33:13,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:15,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:15,896 INFO L93 Difference]: Finished difference Result 8086 states and 11657 transitions. [2023-11-23 20:33:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:15,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2023-11-23 20:33:15,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:16,088 INFO L225 Difference]: With dead ends: 8086 [2023-11-23 20:33:16,088 INFO L226 Difference]: Without dead ends: 5338 [2023-11-23 20:33:16,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:16,104 INFO L413 NwaCegarLoop]: 2532 mSDtfsCounter, 2288 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:16,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 4598 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 619 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-11-23 20:33:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2023-11-23 20:33:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5303. [2023-11-23 20:33:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5303 states, 3185 states have (on average 1.3409733124018839) internal successors, (4271), 3410 states have internal predecessors, (4271), 1661 states have call successors, (1661), 457 states have call predecessors, (1661), 456 states have return successors, (1743), 1579 states have call predecessors, (1743), 1660 states have call successors, (1743) [2023-11-23 20:33:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5303 states to 5303 states and 7675 transitions. [2023-11-23 20:33:16,455 INFO L78 Accepts]: Start accepts. Automaton has 5303 states and 7675 transitions. Word has length 190 [2023-11-23 20:33:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:16,456 INFO L495 AbstractCegarLoop]: Abstraction has 5303 states and 7675 transitions. [2023-11-23 20:33:16,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 20:33:16,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5303 states and 7675 transitions. [2023-11-23 20:33:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-23 20:33:16,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:16,463 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:16,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:33:16,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:16,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1704903375, now seen corresponding path program 1 times [2023-11-23 20:33:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600968065] [2023-11-23 20:33:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:16,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2023-11-23 20:33:16,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:16,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600968065] [2023-11-23 20:33:16,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600968065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:16,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:16,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317451255] [2023-11-23 20:33:16,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:16,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:16,979 INFO L87 Difference]: Start difference. First operand 5303 states and 7675 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 20:33:20,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:20,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:20,940 INFO L93 Difference]: Finished difference Result 10568 states and 15297 transitions. [2023-11-23 20:33:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:20,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 225 [2023-11-23 20:33:20,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:21,003 INFO L225 Difference]: With dead ends: 10568 [2023-11-23 20:33:21,003 INFO L226 Difference]: Without dead ends: 5303 [2023-11-23 20:33:21,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:21,042 INFO L413 NwaCegarLoop]: 2137 mSDtfsCounter, 2409 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:21,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 2137 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-23 20:33:21,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5303 states. [2023-11-23 20:33:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5303 to 5303. [2023-11-23 20:33:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5303 states, 3185 states have (on average 1.3397174254317112) internal successors, (4267), 3410 states have internal predecessors, (4267), 1661 states have call successors, (1661), 457 states have call predecessors, (1661), 456 states have return successors, (1743), 1579 states have call predecessors, (1743), 1660 states have call successors, (1743) [2023-11-23 20:33:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5303 states to 5303 states and 7671 transitions. [2023-11-23 20:33:21,631 INFO L78 Accepts]: Start accepts. Automaton has 5303 states and 7671 transitions. Word has length 225 [2023-11-23 20:33:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:21,634 INFO L495 AbstractCegarLoop]: Abstraction has 5303 states and 7671 transitions. [2023-11-23 20:33:21,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 20:33:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5303 states and 7671 transitions. [2023-11-23 20:33:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-23 20:33:21,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:21,642 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:21,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:33:21,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:21,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash -831505264, now seen corresponding path program 1 times [2023-11-23 20:33:21,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:21,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850976845] [2023-11-23 20:33:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2023-11-23 20:33:23,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:23,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850976845] [2023-11-23 20:33:23,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850976845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:23,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:23,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:33:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028385324] [2023-11-23 20:33:23,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:23,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:33:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:33:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:33:23,303 INFO L87 Difference]: Start difference. First operand 5303 states and 7671 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 20:33:26,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []