./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/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_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-25 00:08:09,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:08:09,213 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:08:09,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:08:09,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:08:09,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:08:09,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:08:09,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:08:09,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:08:09,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:08:09,250 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:08:09,251 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:08:09,251 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:08:09,252 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:08:09,253 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:08:09,253 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:08:09,254 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:08:09,254 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:08:09,255 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:08:09,256 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:08:09,256 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:08:09,257 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:08:09,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:08:09,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:08:09,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:08:09,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:08:09,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:08:09,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:08:09,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:08:09,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:08:09,263 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:08:09,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:08:09,264 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:08:09,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:08:09,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:08:09,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:08:09,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:08:09,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:08:09,267 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:08:09,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:08:09,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:08:09,268 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:08:09,268 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:08:09,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:08:09,269 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_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 [2023-11-25 00:08:09,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:08:09,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:08:09,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:08:09,593 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:08:09,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:08:09,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/../../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 [2023-11-25 00:08:12,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:08:13,317 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:08:13,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/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 [2023-11-25 00:08:13,380 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/data/7d50a19ad/f9afb48d8ad04bd7aa8c3c8e20c11b82/FLAG67cfbb48e [2023-11-25 00:08:13,401 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/data/7d50a19ad/f9afb48d8ad04bd7aa8c3c8e20c11b82 [2023-11-25 00:08:13,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:08:13,410 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:08:13,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:08:13,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:08:13,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:08:13,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:08:13" (1/1) ... [2023-11-25 00:08:13,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d532d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:13, skipping insertion in model container [2023-11-25 00:08:13,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:08:13" (1/1) ... [2023-11-25 00:08:13,628 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:08:17,314 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_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/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] [2023-11-25 00:08:17,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:08:17,457 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:08:17,667 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"); [6485] [2023-11-25 00:08:17,669 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] [2023-11-25 00:08:17,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6528] [2023-11-25 00:08:17,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6531] [2023-11-25 00:08:17,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6534] [2023-11-25 00:08:17,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6537] [2023-11-25 00:08:17,673 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] [2023-11-25 00:08:17,682 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6833] [2023-11-25 00:08:17,684 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] [2023-11-25 00:08:17,700 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] [2023-11-25 00:08:17,730 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7569] [2023-11-25 00:08:17,754 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] [2023-11-25 00:08:17,756 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] [2023-11-25 00:08:17,756 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] [2023-11-25 00:08:17,759 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] [2023-11-25 00:08:17,783 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] [2023-11-25 00:08:17,783 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] [2023-11-25 00:08:17,797 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8149] [2023-11-25 00:08:17,798 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8151] [2023-11-25 00:08:17,800 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8186] [2023-11-25 00:08:17,928 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] [2023-11-25 00:08:17,947 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/netback.c"), "i" (879), "i" (12UL)); [8552-8553] [2023-11-25 00:08:17,956 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] [2023-11-25 00:08:18,048 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8992] [2023-11-25 00:08:18,112 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] [2023-11-25 00:08:18,113 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] [2023-11-25 00:08:18,155 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] [2023-11-25 00:08:18,156 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9432] [2023-11-25 00:08:18,157 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9469] [2023-11-25 00:08:18,158 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] [2023-11-25 00:08:18,183 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 *)"/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] [2023-11-25 00:08:18,185 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] [2023-11-25 00:08:18,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9633] [2023-11-25 00:08:18,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [9635] [2023-11-25 00:08:18,205 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] [2023-11-25 00:08:18,323 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] [2023-11-25 00:08:18,324 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] [2023-11-25 00:08:18,325 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/xenbus.c"), "i" (532), "i" (12UL)); [10958-10959] [2023-11-25 00:08:18,326 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/xenbus.c"), "i" (543), "i" (12UL)); [10973-10974] [2023-11-25 00:08:18,327 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] [2023-11-25 00:08:18,376 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] [2023-11-25 00:08:18,377 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] [2023-11-25 00:08:18,379 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] [2023-11-25 00:08:18,379 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] [2023-11-25 00:08:18,381 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] [2023-11-25 00:08:18,382 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [11895] [2023-11-25 00:08:18,401 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] [2023-11-25 00:08:18,474 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] [2023-11-25 00:08:18,474 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] [2023-11-25 00:08:18,475 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] [2023-11-25 00:08:18,491 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_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/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] [2023-11-25 00:08:18,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:08:18,651 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:08:18,652 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:08:18,652 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:08:18,659 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:08:18,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18 WrapperNode [2023-11-25 00:08:18,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:08:18,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:08:18,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:08:18,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:08:18,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:18,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:18,953 INFO L138 Inliner]: procedures = 426, calls = 3561, calls flagged for inlining = 208, calls inlined = 117, statements flattened = 4856 [2023-11-25 00:08:18,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:08:18,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:08:18,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:08:18,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:08:18,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:18,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:18,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:18,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:19,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:19,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:19,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:19,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:19,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:08:19,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:08:19,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:08:19,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:08:19,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (1/1) ... [2023-11-25 00:08:19,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:08:19,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:08:19,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:08:19,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf8fdbd-1d72-4c3e-9e0c-08636d2c3c61/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:08:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-25 00:08:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2023-11-25 00:08:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2023-11-25 00:08:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure backend_switch_state [2023-11-25 00:08:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure backend_switch_state [2023-11-25 00:08:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2023-11-25 00:08:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2023-11-25 00:08:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-25 00:08:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-25 00:08:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hotplug_status_watch [2023-11-25 00:08:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hotplug_status_watch [2023-11-25 00:08:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-25 00:08:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-25 00:08:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_unmap_frontend_rings [2023-11-25 00:08:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_unmap_frontend_rings [2023-11-25 00:08:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-25 00:08:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-25 00:08:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_xenbus_watch [2023-11-25 00:08:19,468 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_xenbus_watch [2023-11-25 00:08:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-25 00:08:19,468 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-25 00:08:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_kick_thread [2023-11-25 00:08:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_kick_thread [2023-11-25 00:08:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-25 00:08:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-25 00:08:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_map_ring_valloc [2023-11-25 00:08:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_map_ring_valloc [2023-11-25 00:08:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-25 00:08:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-25 00:08:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure add_uevent_var [2023-11-25 00:08:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure add_uevent_var [2023-11-25 00:08:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-25 00:08:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-25 00:08:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure xen_net_read_rate [2023-11-25 00:08:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_net_read_rate [2023-11-25 00:08:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-25 00:08:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-25 00:08:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-11-25 00:08:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-11-25 00:08:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-25 00:08:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-25 00:08:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-25 00:08:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-25 00:08:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure netback_uevent [2023-11-25 00:08:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_uevent [2023-11-25 00:08:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-25 00:08:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-25 00:08:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_carrier_off [2023-11-25 00:08:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_carrier_off [2023-11-25 00:08:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:08:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2023-11-25 00:08:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2023-11-25 00:08:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-25 00:08:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-25 00:08:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-25 00:08:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-25 00:08:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-25 00:08:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-25 00:08:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-25 00:08:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-25 00:08:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-25 00:08:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-25 00:08:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-25 00:08:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-25 00:08:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_switch_state [2023-11-25 00:08:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_switch_state [2023-11-25 00:08:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:08:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-25 00:08:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-25 00:08:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_deinit_queue [2023-11-25 00:08:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_deinit_queue [2023-11-25 00:08:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2023-11-25 00:08:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2023-11-25 00:08:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_to_xenbus_device [2023-11-25 00:08:19,474 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_to_xenbus_device [2023-11-25 00:08:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure xen_unregister_watchers [2023-11-25 00:08:19,474 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_unregister_watchers [2023-11-25 00:08:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2023-11-25 00:08:19,474 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2023-11-25 00:08:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-25 00:08:19,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-25 00:08:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure frontend_changed [2023-11-25 00:08:19,474 INFO L138 BoogieDeclarations]: Found implementation of procedure frontend_changed [2023-11-25 00:08:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:08:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure set_backend_state [2023-11-25 00:08:19,475 INFO L138 BoogieDeclarations]: Found implementation of procedure set_backend_state [2023-11-25 00:08:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:08:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:08:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_write_io_ring [2023-11-25 00:08:19,475 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_write_io_ring [2023-11-25 00:08:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-25 00:08:19,475 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-25 00:08:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2023-11-25 00:08:19,475 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2023-11-25 00:08:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_strstate [2023-11-25 00:08:19,476 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_strstate [2023-11-25 00:08:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_create_on_node [2023-11-25 00:08:19,479 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_create_on_node [2023-11-25 00:08:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-25 00:08:19,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-25 00:08:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-25 00:08:19,481 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-25 00:08:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-25 00:08:19,481 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-25 00:08:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:08:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:08:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-25 00:08:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-25 00:08:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-25 00:08:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-25 00:08:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_disconnect [2023-11-25 00:08:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_disconnect [2023-11-25 00:08:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-25 00:08:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-25 00:08:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-25 00:08:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-25 00:08:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_down [2023-11-25 00:08:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_down [2023-11-25 00:08:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-25 00:08:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-25 00:08:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure bind_interdomain_evtchn_to_irqhandler [2023-11-25 00:08:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_interdomain_evtchn_to_irqhandler [2023-11-25 00:08:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2023-11-25 00:08:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2023-11-25 00:08:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2023-11-25 00:08:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2023-11-25 00:08:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2023-11-25 00:08:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2023-11-25 00:08:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-25 00:08:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-25 00:08:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_fix_features [2023-11-25 00:08:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_fix_features [2023-11-25 00:08:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-25 00:08:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-25 00:08:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-25 00:08:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-25 00:08:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:08:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:08:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:08:19,492 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:08:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2023-11-25 00:08:19,492 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2023-11-25 00:08:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-25 00:08:19,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-25 00:08:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_up [2023-11-25 00:08:19,492 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_up [2023-11-25 00:08:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure get_jiffies_64 [2023-11-25 00:08:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure get_jiffies_64 [2023-11-25 00:08:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-25 00:08:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-25 00:08:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:08:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-25 00:08:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-25 00:08:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-25 00:08:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-25 00:08:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_unmap_ring_vfree [2023-11-25 00:08:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_unmap_ring_vfree [2023-11-25 00:08:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:08:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_change_mtu [2023-11-25 00:08:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_change_mtu [2023-11-25 00:08:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2023-11-25 00:08:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2023-11-25 00:08:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_read [2023-11-25 00:08:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_read [2023-11-25 00:08:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-25 00:08:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-25 00:08:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:08:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-25 00:08:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-25 00:08:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-25 00:08:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-25 00:08:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-25 00:08:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-25 00:08:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-25 00:08:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-25 00:08:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-25 00:08:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-25 00:08:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-25 00:08:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-25 00:08:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-25 00:08:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-25 00:08:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure netback_remove [2023-11-25 00:08:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_remove [2023-11-25 00:08:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-25 00:08:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-25 00:08:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-25 00:08:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-25 00:08:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:08:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-25 00:08:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-25 00:08:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-25 00:08:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-25 00:08:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_gather [2023-11-25 00:08:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_gather [2023-11-25 00:08:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2023-11-25 00:08:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2023-11-25 00:08:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_napi_schedule_or_enable_events [2023-11-25 00:08:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_napi_schedule_or_enable_events [2023-11-25 00:08:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-25 00:08:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-25 00:08:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-25 00:08:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-25 00:08:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2023-11-25 00:08:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2023-11-25 00:08:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-25 00:08:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-25 00:08:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-25 00:08:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-25 00:08:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-25 00:08:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-25 00:08:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:08:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_get_stats [2023-11-25 00:08:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_get_stats [2023-11-25 00:08:20,328 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:08:20,333 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:08:20,568 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-25 00:08:26,523 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:08:27,646 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:08:27,646 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-25 00:08:27,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:08:27 BoogieIcfgContainer [2023-11-25 00:08:27,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:08:27,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:08:27,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:08:27,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:08:27,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:08:13" (1/3) ... [2023-11-25 00:08:27,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff48d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:08:27, skipping insertion in model container [2023-11-25 00:08:27,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:18" (2/3) ... [2023-11-25 00:08:27,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff48d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:08:27, skipping insertion in model container [2023-11-25 00:08:27,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:08:27" (3/3) ... [2023-11-25 00:08:27,664 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 [2023-11-25 00:08:27,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:08:27,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:08:27,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:08:27,797 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;@cb7d141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:08:27,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:08:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 1180 states, 746 states have (on average 1.3257372654155497) internal successors, (989), 773 states have internal predecessors, (989), 335 states have call successors, (335), 98 states have call predecessors, (335), 97 states have return successors, (329), 322 states have call predecessors, (329), 329 states have call successors, (329) [2023-11-25 00:08:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-25 00:08:27,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:27,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:27,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:08:27,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1384002244, now seen corresponding path program 1 times [2023-11-25 00:08:27,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:27,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189989971] [2023-11-25 00:08:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:27,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:08:28,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:28,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189989971] [2023-11-25 00:08:28,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189989971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:28,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:28,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:08:28,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027811116] [2023-11-25 00:08:28,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:28,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:08:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:28,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:08:28,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:08:28,756 INFO L87 Difference]: Start difference. First operand has 1180 states, 746 states have (on average 1.3257372654155497) internal successors, (989), 773 states have internal predecessors, (989), 335 states have call successors, (335), 98 states have call predecessors, (335), 97 states have return successors, (329), 322 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) [2023-11-25 00:08:31,227 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 [] [2023-11-25 00:08:33,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:08:35,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:08:35,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:35,900 INFO L93 Difference]: Finished difference Result 3532 states and 4977 transitions. [2023-11-25 00:08:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:08:35,903 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 [2023-11-25 00:08:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:35,937 INFO L225 Difference]: With dead ends: 3532 [2023-11-25 00:08:35,938 INFO L226 Difference]: Without dead ends: 2310 [2023-11-25 00:08:35,957 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 [2023-11-25 00:08:35,961 INFO L413 NwaCegarLoop]: 1464 mSDtfsCounter, 1630 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 2925 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:35,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 2925 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 370 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2023-11-25 00:08:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2023-11-25 00:08:36,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2300. [2023-11-25 00:08:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 1455 states have (on average 1.30446735395189) internal successors, (1898), 1492 states have internal predecessors, (1898), 653 states have call successors, (653), 192 states have call predecessors, (653), 191 states have return successors, (651), 636 states have call predecessors, (651), 651 states have call successors, (651) [2023-11-25 00:08:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3202 transitions. [2023-11-25 00:08:36,359 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3202 transitions. Word has length 17 [2023-11-25 00:08:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:36,363 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3202 transitions. [2023-11-25 00:08:36,363 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) [2023-11-25 00:08:36,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3202 transitions. [2023-11-25 00:08:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-25 00:08:36,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:36,387 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] [2023-11-25 00:08:36,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:08:36,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:08:36,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash -52432091, now seen corresponding path program 1 times [2023-11-25 00:08:36,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:36,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427983373] [2023-11-25 00:08:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:36,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-25 00:08:36,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427983373] [2023-11-25 00:08:36,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427983373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:36,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:36,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:08:36,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668356386] [2023-11-25 00:08:36,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:36,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:08:36,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:08:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:08:37,000 INFO L87 Difference]: Start difference. First operand 2300 states and 3202 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) [2023-11-25 00:08:39,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:08:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:40,644 INFO L93 Difference]: Finished difference Result 5375 states and 7466 transitions. [2023-11-25 00:08:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:08:40,645 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 [2023-11-25 00:08:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:40,674 INFO L225 Difference]: With dead ends: 5375 [2023-11-25 00:08:40,674 INFO L226 Difference]: Without dead ends: 3076 [2023-11-25 00:08:40,690 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 [2023-11-25 00:08:40,692 INFO L413 NwaCegarLoop]: 1443 mSDtfsCounter, 535 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:40,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 2856 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-25 00:08:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2023-11-25 00:08:40,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3068. [2023-11-25 00:08:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 1960 states have (on average 1.3183673469387756) internal successors, (2584), 2008 states have internal predecessors, (2584), 837 states have call successors, (837), 271 states have call predecessors, (837), 270 states have return successors, (835), 817 states have call predecessors, (835), 835 states have call successors, (835) [2023-11-25 00:08:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4256 transitions. [2023-11-25 00:08:40,939 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4256 transitions. Word has length 84 [2023-11-25 00:08:40,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:40,939 INFO L495 AbstractCegarLoop]: Abstraction has 3068 states and 4256 transitions. [2023-11-25 00:08:40,940 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) [2023-11-25 00:08:40,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4256 transitions. [2023-11-25 00:08:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-25 00:08:40,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:40,954 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] [2023-11-25 00:08:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:08:40,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:08:40,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 182849771, now seen corresponding path program 1 times [2023-11-25 00:08:40,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:40,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813734420] [2023-11-25 00:08:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-25 00:08:41,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:41,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813734420] [2023-11-25 00:08:41,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813734420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:41,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:41,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:08:41,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828979961] [2023-11-25 00:08:41,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:41,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:08:41,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:41,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:08:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:08:41,672 INFO L87 Difference]: Start difference. First operand 3068 states and 4256 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) [2023-11-25 00:08:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:45,851 INFO L93 Difference]: Finished difference Result 6152 states and 8533 transitions. [2023-11-25 00:08:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:08:45,852 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 [2023-11-25 00:08:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:45,879 INFO L225 Difference]: With dead ends: 6152 [2023-11-25 00:08:45,879 INFO L226 Difference]: Without dead ends: 3079 [2023-11-25 00:08:45,894 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 [2023-11-25 00:08:45,896 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 10 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:45,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4286 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-25 00:08:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2023-11-25 00:08:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 3071. [2023-11-25 00:08:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 1963 states have (on average 1.316861946001019) internal successors, (2585), 2011 states have internal predecessors, (2585), 837 states have call successors, (837), 271 states have call predecessors, (837), 270 states have return successors, (835), 817 states have call predecessors, (835), 835 states have call successors, (835) [2023-11-25 00:08:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 4257 transitions. [2023-11-25 00:08:46,076 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 4257 transitions. Word has length 144 [2023-11-25 00:08:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:46,078 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 4257 transitions. [2023-11-25 00:08:46,079 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) [2023-11-25 00:08:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 4257 transitions. [2023-11-25 00:08:46,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-25 00:08:46,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:46,087 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] [2023-11-25 00:08:46,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:08:46,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:08:46,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:46,089 INFO L85 PathProgramCache]: Analyzing trace with hash 429751349, now seen corresponding path program 1 times [2023-11-25 00:08:46,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:46,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824765337] [2023-11-25 00:08:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:46,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-25 00:08:46,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:46,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824765337] [2023-11-25 00:08:46,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824765337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:46,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:46,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:08:46,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354125486] [2023-11-25 00:08:46,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:46,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:08:46,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:46,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:08:46,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:08:46,772 INFO L87 Difference]: Start difference. First operand 3071 states and 4257 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) [2023-11-25 00:08:48,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:08:49,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:08:52,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:52,477 INFO L93 Difference]: Finished difference Result 6163 states and 8541 transitions. [2023-11-25 00:08:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:08:52,477 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 147 [2023-11-25 00:08:52,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:52,501 INFO L225 Difference]: With dead ends: 6163 [2023-11-25 00:08:52,501 INFO L226 Difference]: Without dead ends: 3085 [2023-11-25 00:08:52,514 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 [2023-11-25 00:08:52,516 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 14 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4287 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:52,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4287 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-25 00:08:52,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2023-11-25 00:08:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 3069. [2023-11-25 00:08:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 1961 states have (on average 1.3146353901070882) internal successors, (2578), 2009 states have internal predecessors, (2578), 837 states have call successors, (837), 271 states have call predecessors, (837), 270 states have return successors, (835), 817 states have call predecessors, (835), 835 states have call successors, (835) [2023-11-25 00:08:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 4250 transitions. [2023-11-25 00:08:52,664 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 4250 transitions. Word has length 147 [2023-11-25 00:08:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:52,665 INFO L495 AbstractCegarLoop]: Abstraction has 3069 states and 4250 transitions. [2023-11-25 00:08:52,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-25 00:08:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 4250 transitions. [2023-11-25 00:08:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-25 00:08:52,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:52,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:52,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:08:52,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:08:52,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1604443542, now seen corresponding path program 1 times [2023-11-25 00:08:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:52,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315689881] [2023-11-25 00:08:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-25 00:08:53,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:08:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315689881] [2023-11-25 00:08:53,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315689881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:53,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:53,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:08:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411825096] [2023-11-25 00:08:53,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:53,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:08:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:08:53,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:08:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:08:53,244 INFO L87 Difference]: Start difference. First operand 3069 states and 4250 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-25 00:08:54,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:08:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:58,193 INFO L93 Difference]: Finished difference Result 8138 states and 11245 transitions. [2023-11-25 00:08:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:08:58,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 165 [2023-11-25 00:08:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:58,235 INFO L225 Difference]: With dead ends: 8138 [2023-11-25 00:08:58,235 INFO L226 Difference]: Without dead ends: 5070 [2023-11-25 00:08:58,251 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 [2023-11-25 00:08:58,252 INFO L413 NwaCegarLoop]: 1932 mSDtfsCounter, 1578 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 3139 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:58,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 3139 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-25 00:08:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2023-11-25 00:08:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 5057. [2023-11-25 00:08:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 3225 states have (on average 1.307906976744186) internal successors, (4218), 3308 states have internal predecessors, (4218), 1377 states have call successors, (1377), 455 states have call predecessors, (1377), 454 states have return successors, (1375), 1340 states have call predecessors, (1375), 1375 states have call successors, (1375) [2023-11-25 00:08:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 6970 transitions. [2023-11-25 00:08:58,562 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 6970 transitions. Word has length 165 [2023-11-25 00:08:58,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:58,564 INFO L495 AbstractCegarLoop]: Abstraction has 5057 states and 6970 transitions. [2023-11-25 00:08:58,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-25 00:08:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 6970 transitions. [2023-11-25 00:08:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-25 00:08:58,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:58,578 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:58,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-25 00:08:58,578 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:08:58,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:58,579 INFO L85 PathProgramCache]: Analyzing trace with hash -940312931, now seen corresponding path program 1 times [2023-11-25 00:08:58,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:08:58,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835897776] [2023-11-25 00:08:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:58,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:08:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-25 00:09:00,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:09:00,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835897776] [2023-11-25 00:09:00,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835897776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:00,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:00,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:09:00,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367683290] [2023-11-25 00:09:00,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:00,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:09:00,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:09:00,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:09:00,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:09:00,294 INFO L87 Difference]: Start difference. First operand 5057 states and 6970 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26)