./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/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_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/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_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/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 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:04:08,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:04:08,412 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:04:08,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:04:08,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:04:08,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:04:08,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:04:08,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:04:08,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:04:08,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:04:08,447 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:04:08,447 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:04:08,448 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:04:08,449 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:04:08,449 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:04:08,450 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:04:08,450 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:04:08,451 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:04:08,452 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:04:08,452 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:04:08,453 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:04:08,454 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:04:08,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:04:08,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:04:08,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:04:08,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:04:08,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:04:08,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:04:08,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:04:08,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:04:08,460 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:04:08,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:04:08,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:04:08,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:04:08,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:08,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:04:08,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:04:08,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:04:08,463 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:04:08,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:04:08,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:04:08,464 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:04:08,465 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:04:08,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:04:08,465 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_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 [2023-11-25 00:04:08,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:04:08,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:04:08,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:04:08,751 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:04:08,752 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:04:08,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-25 00:04:12,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:04:12,867 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:04:12,868 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-25 00:04:12,936 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/data/e1565115a/8ea467ee2ae24c1a8cd9a362bd973d3d/FLAGb012bd37d [2023-11-25 00:04:12,954 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/data/e1565115a/8ea467ee2ae24c1a8cd9a362bd973d3d [2023-11-25 00:04:12,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:04:12,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:04:12,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:12,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:04:12,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:04:12,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:12" (1/1) ... [2023-11-25 00:04:12,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b94239f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:12, skipping insertion in model container [2023-11-25 00:04:12,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:12" (1/1) ... [2023-11-25 00:04:13,232 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:04:17,284 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_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2023-11-25 00:04:17,289 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_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2023-11-25 00:04:17,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:17,378 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:04:17,552 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"); [6124] [2023-11-25 00:04:17,554 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)); [6131] [2023-11-25 00:04:17,554 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [6138] [2023-11-25 00:04:17,558 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/dfaa16b/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [6242-6243] [2023-11-25 00:04:17,558 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [6248-6250] [2023-11-25 00:04:17,559 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/dfaa16b/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (809), "i" (12UL)); [6275-6276] [2023-11-25 00:04:17,560 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (45UL), [paravirt_opptr] "i" (& pv_irq_ops.restore_fl.func), [paravirt_clobber] "i" (1), "D" (f): "memory", "cc"); [6281-6283] [2023-11-25 00:04:17,561 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/dfaa16b/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (814), "i" (12UL)); [6307-6308] [2023-11-25 00:04:17,562 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (46UL), [paravirt_opptr] "i" (& pv_irq_ops.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [6313-6315] [2023-11-25 00:04:17,563 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)); [6350] [2023-11-25 00:04:17,571 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" (488), "i" (12UL)); [6550-6551] [2023-11-25 00:04:17,622 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" (502), "i" (12UL)); [6934-6935] [2023-11-25 00:04:17,623 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6941] [2023-11-25 00:04:17,659 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 *)"drivers/net/xen-netfront.c"), "i" (317), "i" (12UL)); [7633-7634] [2023-11-25 00:04:17,660 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 *)"drivers/net/xen-netfront.c"), "i" (321), "i" (12UL)); [7647-7648] [2023-11-25 00:04:17,662 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7671] [2023-11-25 00:04:17,663 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7676] [2023-11-25 00:04:17,663 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7678] [2023-11-25 00:04:17,668 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 *)"drivers/net/xen-netfront.c"), "i" (374), "i" (12UL)); [7752-7753] [2023-11-25 00:04:17,669 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7760] [2023-11-25 00:04:17,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/net/xen-netfront.c"), "i" (393), "i" (12UL)); [7779-7780] [2023-11-25 00:04:17,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7802] [2023-11-25 00:04:17,678 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 *)"drivers/net/xen-netfront.c"), "i" (451), "i" (12UL)); [7883-7884] [2023-11-25 00:04:17,683 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 *)"drivers/net/xen-netfront.c"), "i" (473), "i" (12UL)); [7924-7925] [2023-11-25 00:04:17,683 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 *)"drivers/net/xen-netfront.c"), "i" (482), "i" (12UL)); [7939-7940] [2023-11-25 00:04:17,685 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 *)"drivers/net/xen-netfront.c"), "i" (496), "i" (12UL)); [7965-7966] [2023-11-25 00:04:17,686 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 *)"drivers/net/xen-netfront.c"), "i" (514), "i" (12UL)); [7992-7993] [2023-11-25 00:04:17,690 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("add %%gs:%P1, %0": "=r" (tcp_ptr__): "m" (this_cpu_off), "0" (np->stats)); [8108] [2023-11-25 00:04:17,693 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 *)"drivers/net/xen-netfront.c"), "i" (599), "i" (12UL)); [8222-8223] [2023-11-25 00:04:17,697 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8274] [2023-11-25 00:04:17,698 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8276] [2023-11-25 00:04:17,700 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 *)"drivers/net/xen-netfront.c"), "i" (678), "i" (12UL)); [8339-8340] [2023-11-25 00:04:17,708 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 *)"drivers/net/xen-netfront.c"), "i" (775), "i" (12UL)); [8522-8523] [2023-11-25 00:04:17,715 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 *)"drivers/net/xen-netfront.c"), "i" (855), "i" (12UL)); [8672-8673] [2023-11-25 00:04:17,716 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 *)"drivers/net/xen-netfront.c"), "i" (858), "i" (12UL)); [8689-8690] [2023-11-25 00:04:17,719 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("add %%gs:%P1, %0": "=r" (tcp_ptr__): "m" (this_cpu_off), "0" (np->stats)); [8767] [2023-11-25 00:04:17,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8855] [2023-11-25 00:04:17,728 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8970] [2023-11-25 00:04:17,731 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9042] [2023-11-25 00:04:17,752 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9412] [2023-11-25 00:04:17,937 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_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2023-11-25 00:04:17,937 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_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2023-11-25 00:04:17,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:18,231 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:18,240 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:04:18,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18 WrapperNode [2023-11-25 00:04:18,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:18,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:18,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:04:18,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:04:18,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,658 INFO L138 Inliner]: procedures = 547, calls = 2370, calls flagged for inlining = 260, calls inlined = 202, statements flattened = 5277 [2023-11-25 00:04:18,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:18,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:04:18,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:04:18,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:04:18,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:04:18,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:04:18,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:04:18,960 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:04:18,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (1/1) ... [2023-11-25 00:04:18,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:18,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:18,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:04:19,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:04:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2023-11-25 00:04:19,055 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2023-11-25 00:04:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-25 00:04:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-25 00:04:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-25 00:04:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-25 00:04:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-25 00:04:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-25 00:04:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-25 00:04:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-25 00:04:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-25 00:04:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-25 00:04:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-25 00:04:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-25 00:04:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2023-11-25 00:04:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2023-11-25 00:04:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-25 00:04:19,059 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-25 00:04:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2023-11-25 00:04:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2023-11-25 00:04:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-25 00:04:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-25 00:04:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2023-11-25 00:04:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2023-11-25 00:04:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2023-11-25 00:04:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2023-11-25 00:04:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2023-11-25 00:04:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2023-11-25 00:04:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2023-11-25 00:04:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2023-11-25 00:04:19,063 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2023-11-25 00:04:19,063 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2023-11-25 00:04:19,063 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-25 00:04:19,063 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-25 00:04:19,063 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2023-11-25 00:04:19,063 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2023-11-25 00:04:19,064 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-25 00:04:19,064 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2023-11-25 00:04:19,064 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2023-11-25 00:04:19,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-25 00:04:19,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-25 00:04:19,065 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-25 00:04:19,065 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-25 00:04:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-25 00:04:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-25 00:04:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2023-11-25 00:04:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2023-11-25 00:04:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:04:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-25 00:04:19,067 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-25 00:04:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2023-11-25 00:04:19,067 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2023-11-25 00:04:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2023-11-25 00:04:19,068 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2023-11-25 00:04:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-25 00:04:19,068 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-25 00:04:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-25 00:04:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2023-11-25 00:04:19,068 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2023-11-25 00:04:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-25 00:04:19,069 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-25 00:04:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-11-25 00:04:19,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-11-25 00:04:19,070 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-25 00:04:19,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-25 00:04:19,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-25 00:04:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-25 00:04:19,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-25 00:04:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2023-11-25 00:04:19,072 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2023-11-25 00:04:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:04:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-25 00:04:19,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-25 00:04:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-25 00:04:19,073 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-25 00:04:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-25 00:04:19,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-25 00:04:19,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2023-11-25 00:04:19,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2023-11-25 00:04:19,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-25 00:04:19,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-25 00:04:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get [2023-11-25 00:04:19,075 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get [2023-11-25 00:04:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-25 00:04:19,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-25 00:04:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2023-11-25 00:04:19,076 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2023-11-25 00:04:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-25 00:04:19,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-25 00:04:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-25 00:04:19,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-25 00:04:19,078 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_uninit [2023-11-25 00:04:19,078 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_uninit [2023-11-25 00:04:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2023-11-25 00:04:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2023-11-25 00:04:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:04:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:04:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-25 00:04:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-25 00:04:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:04:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2023-11-25 00:04:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2023-11-25 00:04:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-25 00:04:19,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-25 00:04:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-25 00:04:19,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-25 00:04:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2023-11-25 00:04:19,086 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2023-11-25 00:04:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2023-11-25 00:04:19,086 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2023-11-25 00:04:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-25 00:04:19,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-25 00:04:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-25 00:04:19,088 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-25 00:04:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-25 00:04:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-25 00:04:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-25 00:04:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-25 00:04:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-25 00:04:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-25 00:04:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-25 00:04:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-25 00:04:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2023-11-25 00:04:19,098 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2023-11-25 00:04:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:04:19,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:04:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-25 00:04:19,099 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-25 00:04:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-25 00:04:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-25 00:04:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-25 00:04:19,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-25 00:04:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2023-11-25 00:04:19,100 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2023-11-25 00:04:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-25 00:04:19,100 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-25 00:04:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2023-11-25 00:04:19,100 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2023-11-25 00:04:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-25 00:04:19,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-25 00:04:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-25 00:04:19,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-25 00:04:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2023-11-25 00:04:19,101 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2023-11-25 00:04:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-25 00:04:19,101 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-25 00:04:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:04:19,102 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:04:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-25 00:04:19,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-25 00:04:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-11-25 00:04:19,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-11-25 00:04:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2023-11-25 00:04:19,103 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2023-11-25 00:04:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-25 00:04:19,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-25 00:04:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:04:19,104 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-25 00:04:19,104 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-25 00:04:19,104 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2023-11-25 00:04:19,104 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2023-11-25 00:04:19,104 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2023-11-25 00:04:19,104 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2023-11-25 00:04:19,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-25 00:04:19,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-25 00:04:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2023-11-25 00:04:19,105 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2023-11-25 00:04:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:04:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2023-11-25 00:04:19,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2023-11-25 00:04:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2023-11-25 00:04:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2023-11-25 00:04:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2023-11-25 00:04:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2023-11-25 00:04:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:04:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-25 00:04:19,107 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-25 00:04:19,107 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-25 00:04:19,107 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-25 00:04:19,107 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2023-11-25 00:04:19,107 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2023-11-25 00:04:19,107 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2023-11-25 00:04:19,107 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2023-11-25 00:04:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-25 00:04:19,108 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-25 00:04:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-25 00:04:19,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-25 00:04:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-11-25 00:04:19,108 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-11-25 00:04:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2023-11-25 00:04:19,109 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2023-11-25 00:04:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-25 00:04:19,109 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-25 00:04:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2023-11-25 00:04:19,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2023-11-25 00:04:19,110 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-25 00:04:19,110 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-25 00:04:19,110 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2023-11-25 00:04:19,110 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2023-11-25 00:04:19,110 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2023-11-25 00:04:19,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2023-11-25 00:04:19,110 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-25 00:04:19,111 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-25 00:04:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-25 00:04:19,111 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-25 00:04:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2023-11-25 00:04:19,111 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2023-11-25 00:04:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2023-11-25 00:04:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2023-11-25 00:04:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-25 00:04:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-25 00:04:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-25 00:04:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-25 00:04:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2023-11-25 00:04:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2023-11-25 00:04:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:04:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-11-25 00:04:19,113 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-11-25 00:04:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-25 00:04:19,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-25 00:04:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure get_id_from_freelist [2023-11-25 00:04:19,114 INFO L138 BoogieDeclarations]: Found implementation of procedure get_id_from_freelist [2023-11-25 00:04:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-25 00:04:19,114 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-25 00:04:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2023-11-25 00:04:19,114 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2023-11-25 00:04:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-25 00:04:19,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-25 00:04:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-25 00:04:19,115 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-25 00:04:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2023-11-25 00:04:19,116 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2023-11-25 00:04:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2023-11-25 00:04:19,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2023-11-25 00:04:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2023-11-25 00:04:19,120 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2023-11-25 00:04:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-25 00:04:19,120 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-25 00:04:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2023-11-25 00:04:19,121 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2023-11-25 00:04:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-25 00:04:19,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-25 00:04:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2023-11-25 00:04:19,122 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2023-11-25 00:04:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2023-11-25 00:04:19,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2023-11-25 00:04:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:04:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-25 00:04:19,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-25 00:04:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-25 00:04:19,123 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-25 00:04:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-25 00:04:19,123 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-25 00:04:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2023-11-25 00:04:19,124 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2023-11-25 00:04:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2023-11-25 00:04:19,124 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2023-11-25 00:04:20,064 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:04:20,069 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:04:20,267 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-25 00:04:24,333 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:04:26,155 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:04:26,155 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:04:26,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:26 BoogieIcfgContainer [2023-11-25 00:04:26,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:04:26,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:04:26,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:04:26,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:04:26,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:04:12" (1/3) ... [2023-11-25 00:04:26,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a4efef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:26, skipping insertion in model container [2023-11-25 00:04:26,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:18" (2/3) ... [2023-11-25 00:04:26,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a4efef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:26, skipping insertion in model container [2023-11-25 00:04:26,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:26" (3/3) ... [2023-11-25 00:04:26,168 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-25 00:04:26,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:04:26,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:04:26,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:04:26,304 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;@509d2b8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:04:26,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:04:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 1352 states, 770 states have (on average 1.2415584415584415) internal successors, (956), 808 states have internal predecessors, (956), 461 states have call successors, (461), 120 states have call predecessors, (461), 119 states have return successors, (457), 454 states have call predecessors, (457), 457 states have call successors, (457) [2023-11-25 00:04:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-25 00:04:26,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:26,365 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-25 00:04:26,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:26,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1879604096, now seen corresponding path program 1 times [2023-11-25 00:04:26,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:26,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338922807] [2023-11-25 00:04:26,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:26,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-25 00:04:29,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:29,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338922807] [2023-11-25 00:04:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338922807] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:04:29,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385369877] [2023-11-25 00:04:29,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:29,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:29,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:29,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:29,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:04:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:30,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-25 00:04:30,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-25 00:04:30,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:04:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385369877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:30,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:04:30,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 15 [2023-11-25 00:04:30,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142098697] [2023-11-25 00:04:30,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:31,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-25 00:04:31,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:31,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-25 00:04:31,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:04:31,039 INFO L87 Difference]: Start difference. First operand has 1352 states, 770 states have (on average 1.2415584415584415) internal successors, (956), 808 states have internal predecessors, (956), 461 states have call successors, (461), 120 states have call predecessors, (461), 119 states have return successors, (457), 454 states have call predecessors, (457), 457 states have call successors, (457) Second operand has 10 states, 7 states have (on average 9.428571428571429) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-25 00:04:38,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:38,476 INFO L93 Difference]: Finished difference Result 2692 states and 3749 transitions. [2023-11-25 00:04:38,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-25 00:04:38,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 9.428571428571429) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 175 [2023-11-25 00:04:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:38,512 INFO L225 Difference]: With dead ends: 2692 [2023-11-25 00:04:38,512 INFO L226 Difference]: Without dead ends: 1304 [2023-11-25 00:04:38,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-11-25 00:04:38,530 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 11 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 14073 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:38,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 14073 Invalid, 2781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-25 00:04:38,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2023-11-25 00:04:38,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1304. [2023-11-25 00:04:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 748 states have (on average 1.2352941176470589) internal successors, (924), 782 states have internal predecessors, (924), 437 states have call successors, (437), 118 states have call predecessors, (437), 118 states have return successors, (437), 434 states have call predecessors, (437), 437 states have call successors, (437) [2023-11-25 00:04:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1798 transitions. [2023-11-25 00:04:38,712 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1798 transitions. Word has length 175 [2023-11-25 00:04:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:38,712 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1798 transitions. [2023-11-25 00:04:38,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 9.428571428571429) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-25 00:04:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1798 transitions. [2023-11-25 00:04:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-25 00:04:38,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:38,726 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-25 00:04:38,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:04:38,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:04:38,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:38,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash -730404374, now seen corresponding path program 1 times [2023-11-25 00:04:38,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:38,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181593521] [2023-11-25 00:04:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-25 00:04:44,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181593521] [2023-11-25 00:04:44,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181593521] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:04:44,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874898285] [2023-11-25 00:04:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:44,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:44,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:44,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:44,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdf1eac-f0a7-4a03-a975-6568c5d157ec/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:04:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:45,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-25 00:04:46,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-25 00:04:46,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-25 00:04:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874898285] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:04:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1244301597] [2023-11-25 00:04:46,510 INFO L159 IcfgInterpreter]: Started Sifa with 120 locations of interest [2023-11-25 00:04:46,510 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:46,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:46,520 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:46,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs