./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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX --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 f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:11:43,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:11:43,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:11:43,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:11:43,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:11:43,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:11:43,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:11:43,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:11:43,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:11:43,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:11:43,495 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:11:43,496 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:11:43,497 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:11:43,498 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:11:43,499 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:11:43,500 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:11:43,500 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:11:43,501 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:11:43,501 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:11:43,502 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:11:43,502 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:11:43,503 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:11:43,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:11:43,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:11:43,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:11:43,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:11:43,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:11:43,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:11:43,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:11:43,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:11:43,509 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:11:43,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:11:43,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:11:43,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:43,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:11:43,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:11:43,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:11:43,511 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:11:43,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:11:43,511 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:11:43,512 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:11:43,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:11:43,512 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_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 [2023-11-12 00:11:43,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:11:43,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:11:43,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:11:43,894 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:11:43,895 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:11:43,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2023-11-12 00:11:47,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:11:47,874 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:11:47,876 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2023-11-12 00:11:47,955 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/data/db4f57d1d/31c5a2403d2c4675b2251d6975074a41/FLAGeae468414 [2023-11-12 00:11:47,971 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/data/db4f57d1d/31c5a2403d2c4675b2251d6975074a41 [2023-11-12 00:11:47,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:11:47,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:11:47,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:47,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:11:47,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:11:47,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:47" (1/1) ... [2023-11-12 00:11:47,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4727ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:47, skipping insertion in model container [2023-11-12 00:11:47,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:47" (1/1) ... [2023-11-12 00:11:48,210 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:11:51,856 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_1ec960d5-e219-419f-a042-62fee3d6df08/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2023-11-12 00:11:51,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:52,033 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:11:52,165 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"); [6485] [2023-11-12 00:11:52,168 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [6493-6494] [2023-11-12 00:11:52,170 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6528] [2023-11-12 00:11:52,170 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6531] [2023-11-12 00:11:52,171 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6534] [2023-11-12 00:11:52,171 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6537] [2023-11-12 00:11:52,173 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)); [6580] [2023-11-12 00:11:52,181 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6833] [2023-11-12 00:11:52,183 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/mm.h"), "i" (543), "i" (12UL)); [6884-6885] [2023-11-12 00:11:52,199 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" (1696), "i" (12UL)); [7111-7112] [2023-11-12 00:11:52,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7569] [2023-11-12 00:11:52,290 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (281), "i" (12UL)); [7710-7711] [2023-11-12 00:11:52,293 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (292), "i" (12UL)); [7723-7724] [2023-11-12 00:11:52,294 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (293), "i" (12UL)); [7731-7732] [2023-11-12 00:11:52,297 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (333), "i" (12UL)); [7778-7779] [2023-11-12 00:11:52,325 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (525), "i" (12UL)); [8078-8079] [2023-11-12 00:11:52,326 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (530), "i" (12UL)); [8090-8091] [2023-11-12 00:11:52,338 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8149] [2023-11-12 00:11:52,338 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8151] [2023-11-12 00:11:52,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8186] [2023-11-12 00:11:52,413 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (827), "i" (12UL)); [8472-8473] [2023-11-12 00:11:52,463 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (879), "i" (12UL)); [8552-8553] [2023-11-12 00:11:52,472 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (892), "i" (12UL)); [8571-8572] [2023-11-12 00:11:52,555 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8992] [2023-11-12 00:11:52,629 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1359), "i" (12UL)); [9180-9181] [2023-11-12 00:11:52,631 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1374), "i" (12UL)); [9210-9211] [2023-11-12 00:11:52,671 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1530), "i" (12UL)); [9424-9425] [2023-11-12 00:11:52,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9432] [2023-11-12 00:11:52,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9469] [2023-11-12 00:11:52,675 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1569), "i" (12UL)); [9475-9476] [2023-11-12 00:11:52,701 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1606), "i" (12UL)); [9523-9524] [2023-11-12 00:11:52,704 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1636), "i" (12UL)); [9572-9573] [2023-11-12 00:11:52,709 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9633] [2023-11-12 00:11:52,709 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [9635] [2023-11-12 00:11:52,723 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1740), "i" (12UL)); [9681-9682] [2023-11-12 00:11:52,837 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (506), "i" (12UL)); [10924-10925] [2023-11-12 00:11:52,838 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (520), "i" (12UL)); [10942-10943] [2023-11-12 00:11:52,840 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (532), "i" (12UL)); [10958-10959] [2023-11-12 00:11:52,841 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (543), "i" (12UL)); [10973-10974] [2023-11-12 00:11:52,842 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (547), "i" (12UL)); [10981-10982] [2023-11-12 00:11:52,890 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; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [11798] [2023-11-12 00:11:52,892 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; btr %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [11806-11807] [2023-11-12 00:11:52,893 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)); [11825] [2023-11-12 00:11:52,895 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"); [11833-11834] [2023-11-12 00:11:52,897 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/netdevice.h"), "i" (507), "i" (12UL)); [11889-11890] [2023-11-12 00:11:52,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [11895] [2023-11-12 00:11:52,912 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/interface.c"), "i" (147), "i" (12UL)); [12122-12123] [2023-11-12 00:11:52,946 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/interface.c"), "i" (523), "i" (12UL)); [12641-12642] [2023-11-12 00:11:52,947 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/interface.c"), "i" (524), "i" (12UL)); [12650-12651] [2023-11-12 00:11:52,947 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/interface.c"), "i" (525), "i" (12UL)); [12659-12660] [2023-11-12 00:11:52,966 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_1ec960d5-e219-419f-a042-62fee3d6df08/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2023-11-12 00:11:52,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:53,198 WARN L672 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:11:53,198 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:11:53,199 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:11:53,207 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:11:53,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53 WrapperNode [2023-11-12 00:11:53,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:53,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:53,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:11:53,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:11:53,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,481 INFO L138 Inliner]: procedures = 426, calls = 3561, calls flagged for inlining = 208, calls inlined = 117, statements flattened = 4726 [2023-11-12 00:11:53,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:53,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:11:53,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:11:53,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:11:53,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:11:53,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:11:53,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:11:53,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:11:53,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (1/1) ... [2023-11-12 00:11:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:53,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:53,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:11:53,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec960d5-e219-419f-a042-62fee3d6df08/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:11:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-12 00:11:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2023-11-12 00:11:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2023-11-12 00:11:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure backend_switch_state [2023-11-12 00:11:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure backend_switch_state [2023-11-12 00:11:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2023-11-12 00:11:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2023-11-12 00:11:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 00:11:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 00:11:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hotplug_status_watch [2023-11-12 00:11:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hotplug_status_watch [2023-11-12 00:11:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-12 00:11:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-12 00:11:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_unmap_frontend_rings [2023-11-12 00:11:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_unmap_frontend_rings [2023-11-12 00:11:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:11:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:11:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_xenbus_watch [2023-11-12 00:11:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_xenbus_watch [2023-11-12 00:11:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-12 00:11:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-12 00:11:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_kick_thread [2023-11-12 00:11:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_kick_thread [2023-11-12 00:11:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-12 00:11:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-12 00:11:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_map_ring_valloc [2023-11-12 00:11:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_map_ring_valloc [2023-11-12 00:11:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-12 00:11:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-12 00:11:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure add_uevent_var [2023-11-12 00:11:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure add_uevent_var [2023-11-12 00:11:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:11:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:11:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure xen_net_read_rate [2023-11-12 00:11:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_net_read_rate [2023-11-12 00:11:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-12 00:11:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-12 00:11:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-11-12 00:11:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-11-12 00:11:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-12 00:11:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-12 00:11:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:11:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:11:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure netback_uevent [2023-11-12 00:11:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_uevent [2023-11-12 00:11:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 00:11:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 00:11:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_carrier_off [2023-11-12 00:11:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_carrier_off [2023-11-12 00:11:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:11:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2023-11-12 00:11:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2023-11-12 00:11:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-12 00:11:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-12 00:11:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:11:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:11:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:11:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-12 00:11:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-12 00:11:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 00:11:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 00:11:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 00:11:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 00:11:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:11:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_switch_state [2023-11-12 00:11:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_switch_state [2023-11-12 00:11:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:11:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:11:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:11:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_deinit_queue [2023-11-12 00:11:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_deinit_queue [2023-11-12 00:11:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2023-11-12 00:11:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2023-11-12 00:11:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_to_xenbus_device [2023-11-12 00:11:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_to_xenbus_device [2023-11-12 00:11:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure xen_unregister_watchers [2023-11-12 00:11:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_unregister_watchers [2023-11-12 00:11:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2023-11-12 00:11:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2023-11-12 00:11:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-12 00:11:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-12 00:11:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure frontend_changed [2023-11-12 00:11:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure frontend_changed [2023-11-12 00:11:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:11:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure set_backend_state [2023-11-12 00:11:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure set_backend_state [2023-11-12 00:11:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:11:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:11:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_write_io_ring [2023-11-12 00:11:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_write_io_ring [2023-11-12 00:11:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-12 00:11:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-12 00:11:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2023-11-12 00:11:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2023-11-12 00:11:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_strstate [2023-11-12 00:11:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_strstate [2023-11-12 00:11:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_create_on_node [2023-11-12 00:11:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_create_on_node [2023-11-12 00:11:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-12 00:11:53,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-12 00:11:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-12 00:11:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-12 00:11:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-12 00:11:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-12 00:11:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:11:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:11:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 00:11:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 00:11:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:11:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:11:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_disconnect [2023-11-12 00:11:53,889 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_disconnect [2023-11-12 00:11:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:11:53,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:11:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-12 00:11:53,890 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-12 00:11:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_down [2023-11-12 00:11:53,890 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_down [2023-11-12 00:11:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-12 00:11:53,890 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-12 00:11:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure bind_interdomain_evtchn_to_irqhandler [2023-11-12 00:11:53,890 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_interdomain_evtchn_to_irqhandler [2023-11-12 00:11:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2023-11-12 00:11:53,891 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2023-11-12 00:11:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2023-11-12 00:11:53,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2023-11-12 00:11:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2023-11-12 00:11:53,891 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2023-11-12 00:11:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-12 00:11:53,892 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-12 00:11:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_fix_features [2023-11-12 00:11:53,892 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_fix_features [2023-11-12 00:11:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-12 00:11:53,892 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-12 00:11:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 00:11:53,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 00:11:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:11:53,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:11:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:11:53,893 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:11:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2023-11-12 00:11:53,893 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2023-11-12 00:11:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-12 00:11:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-12 00:11:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_up [2023-11-12 00:11:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_up [2023-11-12 00:11:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure get_jiffies_64 [2023-11-12 00:11:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure get_jiffies_64 [2023-11-12 00:11:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-12 00:11:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-12 00:11:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:11:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-12 00:11:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-12 00:11:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-12 00:11:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-12 00:11:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_unmap_ring_vfree [2023-11-12 00:11:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_unmap_ring_vfree [2023-11-12 00:11:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:11:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_change_mtu [2023-11-12 00:11:53,896 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_change_mtu [2023-11-12 00:11:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2023-11-12 00:11:53,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2023-11-12 00:11:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_read [2023-11-12 00:11:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_read [2023-11-12 00:11:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-12 00:11:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-12 00:11:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:11:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:11:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:11:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-12 00:11:53,899 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-12 00:11:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 00:11:53,899 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 00:11:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-12 00:11:53,900 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-12 00:11:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-12 00:11:53,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-12 00:11:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-12 00:11:53,900 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-12 00:11:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-12 00:11:53,901 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-12 00:11:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure netback_remove [2023-11-12 00:11:53,901 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_remove [2023-11-12 00:11:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-12 00:11:53,901 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-12 00:11:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:11:53,901 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:11:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:11:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-12 00:11:53,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-12 00:11:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:11:53,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:11:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_gather [2023-11-12 00:11:53,902 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_gather [2023-11-12 00:11:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2023-11-12 00:11:53,903 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2023-11-12 00:11:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_napi_schedule_or_enable_events [2023-11-12 00:11:53,903 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_napi_schedule_or_enable_events [2023-11-12 00:11:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-12 00:11:53,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-12 00:11:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-12 00:11:53,903 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-12 00:11:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2023-11-12 00:11:53,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2023-11-12 00:11:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-12 00:11:53,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-12 00:11:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-12 00:11:53,904 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-12 00:11:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-12 00:11:53,904 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-12 00:11:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:11:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_get_stats [2023-11-12 00:11:53,905 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_get_stats [2023-11-12 00:11:54,746 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:11:54,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:11:55,034 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:12:04,672 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:12:06,290 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:12:06,290 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-12 00:12:06,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:06 BoogieIcfgContainer [2023-11-12 00:12:06,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:12:06,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:12:06,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:12:06,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:12:06,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:11:47" (1/3) ... [2023-11-12 00:12:06,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de9685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:06, skipping insertion in model container [2023-11-12 00:12:06,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:53" (2/3) ... [2023-11-12 00:12:06,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de9685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:06, skipping insertion in model container [2023-11-12 00:12:06,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:06" (3/3) ... [2023-11-12 00:12:06,319 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2023-11-12 00:12:06,352 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:12:06,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:12:06,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:12:06,496 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;@3e04f6c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:12:06,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:12:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 1166 states, 732 states have (on average 1.3319672131147542) internal successors, (975), 769 states have internal predecessors, (975), 335 states have call successors, (335), 98 states have call predecessors, (335), 97 states have return successors, (329), 317 states have call predecessors, (329), 329 states have call successors, (329) [2023-11-12 00:12:06,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:12:06,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:06,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:12:06,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:06,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:06,533 INFO L85 PathProgramCache]: Analyzing trace with hash 132790287, now seen corresponding path program 1 times [2023-11-12 00:12:06,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:06,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343775138] [2023-11-12 00:12:06,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:06,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:12:07,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:07,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343775138] [2023-11-12 00:12:07,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343775138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:07,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:07,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:12:07,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459629927] [2023-11-12 00:12:07,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:07,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:12:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:07,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:12:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:12:07,649 INFO L87 Difference]: Start difference. First operand has 1166 states, 732 states have (on average 1.3319672131147542) internal successors, (975), 769 states have internal predecessors, (975), 335 states have call successors, (335), 98 states have call predecessors, (335), 97 states have return successors, (329), 317 states have call predecessors, (329), 329 states have call successors, (329) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:12:11,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:12:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:12,365 INFO L93 Difference]: Finished difference Result 3490 states and 4935 transitions. [2023-11-12 00:12:12,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:12:12,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-12 00:12:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:12,407 INFO L225 Difference]: With dead ends: 3490 [2023-11-12 00:12:12,408 INFO L226 Difference]: Without dead ends: 2282 [2023-11-12 00:12:12,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:12:12,430 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 1616 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:12,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 2897 Invalid, 372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-12 00:12:12,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-11-12 00:12:12,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2273. [2023-11-12 00:12:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1428 states have (on average 1.3102240896358543) internal successors, (1871), 1484 states have internal predecessors, (1871), 653 states have call successors, (653), 192 states have call predecessors, (653), 191 states have return successors, (651), 626 states have call predecessors, (651), 651 states have call successors, (651) [2023-11-12 00:12:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3175 transitions. [2023-11-12 00:12:12,732 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 3175 transitions. Word has length 17 [2023-11-12 00:12:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:12,733 INFO L495 AbstractCegarLoop]: Abstraction has 2273 states and 3175 transitions. [2023-11-12 00:12:12,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:12:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 3175 transitions. [2023-11-12 00:12:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-12 00:12:12,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:12,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-11-12 00:12:12,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:12:12,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:12,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1431312614, now seen corresponding path program 1 times [2023-11-12 00:12:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413187250] [2023-11-12 00:12:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:12,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 00:12:13,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:13,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413187250] [2023-11-12 00:12:13,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413187250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:13,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:13,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:12:13,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129202866] [2023-11-12 00:12:13,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:13,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:12:13,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:13,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:12:13,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:12:13,381 INFO L87 Difference]: Start difference. First operand 2273 states and 3175 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 00:12:16,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:12:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:17,762 INFO L93 Difference]: Finished difference Result 5321 states and 7412 transitions. [2023-11-12 00:12:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:12:17,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2023-11-12 00:12:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:17,797 INFO L225 Difference]: With dead ends: 5321 [2023-11-12 00:12:17,798 INFO L226 Difference]: Without dead ends: 3049 [2023-11-12 00:12:17,819 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 [2023-11-12 00:12:17,821 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 535 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:17,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 2828 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-12 00:12:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2023-11-12 00:12:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3041. [2023-11-12 00:12:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 1933 states have (on average 1.322814278323849) internal successors, (2557), 2000 states have internal predecessors, (2557), 837 states have call successors, (837), 271 states have call predecessors, (837), 270 states have return successors, (835), 807 states have call predecessors, (835), 835 states have call successors, (835) [2023-11-12 00:12:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4229 transitions. [2023-11-12 00:12:18,097 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4229 transitions. Word has length 84 [2023-11-12 00:12:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:18,098 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 4229 transitions. [2023-11-12 00:12:18,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 00:12:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4229 transitions. [2023-11-12 00:12:18,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-12 00:12:18,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:18,113 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-12 00:12:18,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:12:18,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:18,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash -117795361, now seen corresponding path program 1 times [2023-11-12 00:12:18,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:18,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170978958] [2023-11-12 00:12:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-12 00:12:18,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:18,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170978958] [2023-11-12 00:12:18,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170978958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:18,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:18,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:12:18,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201850197] [2023-11-12 00:12:18,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:18,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:12:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:12:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:12:18,999 INFO L87 Difference]: Start difference. First operand 3041 states and 4229 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:12:20,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:12:23,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:12:26,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:26,015 INFO L93 Difference]: Finished difference Result 6098 states and 8479 transitions. [2023-11-12 00:12:26,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:12:26,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2023-11-12 00:12:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:26,046 INFO L225 Difference]: With dead ends: 6098 [2023-11-12 00:12:26,046 INFO L226 Difference]: Without dead ends: 3052 [2023-11-12 00:12:26,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:12:26,067 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 10 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:26,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4244 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-12 00:12:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2023-11-12 00:12:26,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3044. [2023-11-12 00:12:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 1936 states have (on average 1.3212809917355373) internal successors, (2558), 2003 states have internal predecessors, (2558), 837 states have call successors, (837), 271 states have call predecessors, (837), 270 states have return successors, (835), 807 states have call predecessors, (835), 835 states have call successors, (835) [2023-11-12 00:12:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 4230 transitions. [2023-11-12 00:12:26,378 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 4230 transitions. Word has length 144 [2023-11-12 00:12:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:26,379 INFO L495 AbstractCegarLoop]: Abstraction has 3044 states and 4230 transitions. [2023-11-12 00:12:26,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:12:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 4230 transitions. [2023-11-12 00:12:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-12 00:12:26,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:26,389 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1] [2023-11-12 00:12:26,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:12:26,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:26,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:26,391 INFO L85 PathProgramCache]: Analyzing trace with hash -397070677, now seen corresponding path program 1 times [2023-11-12 00:12:26,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:26,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213739843] [2023-11-12 00:12:26,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:26,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-12 00:12:27,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213739843] [2023-11-12 00:12:27,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213739843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:27,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:27,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:12:27,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986877984] [2023-11-12 00:12:27,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:27,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:12:27,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:27,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:12:27,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:12:27,182 INFO L87 Difference]: Start difference. First operand 3044 states and 4230 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:12:29,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:12:31,475 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 []