./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 cf1a7837 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_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/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_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:58:16,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:58:16,567 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:58:16,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:58:16,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:58:16,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:58:16,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:58:16,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:58:16,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:58:16,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:58:16,624 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:58:16,626 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:58:16,626 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:58:16,628 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:58:16,628 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:58:16,629 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:58:16,629 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:58:16,630 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:58:16,630 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:58:16,631 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:58:16,631 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:58:16,632 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:58:16,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:58:16,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:58:16,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:58:16,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:58:16,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:58:16,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:58:16,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:58:16,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:58:16,638 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:58:16,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:58:16,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:58:16,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:16,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:58:16,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:58:16,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:58:16,640 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:58:16,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:58:16,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:58:16,641 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:58:16,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:58:16,642 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_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 [2023-11-12 00:58:16,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:58:16,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:58:16,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:58:16,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:58:16,938 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:58:16,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-12 00:58:20,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:58:20,704 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:58:20,706 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-12 00:58:20,777 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/data/af7039a0c/8e5ead5583534ea9800d8016942fe83a/FLAG38f710a30 [2023-11-12 00:58:20,797 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/data/af7039a0c/8e5ead5583534ea9800d8016942fe83a [2023-11-12 00:58:20,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:58:20,805 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:58:20,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:20,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:58:20,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:58:20,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:20" (1/1) ... [2023-11-12 00:58:20,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c294e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:20, skipping insertion in model container [2023-11-12 00:58:20,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:20" (1/1) ... [2023-11-12 00:58:21,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:58:25,232 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_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2023-11-12 00:58:25,236 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_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2023-11-12 00:58:25,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:25,329 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:58:25,440 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] [2023-11-12 00:58:25,442 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] [2023-11-12 00:58:25,443 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [6138] [2023-11-12 00:58:25,447 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] [2023-11-12 00:58:25,448 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] [2023-11-12 00:58:25,449 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] [2023-11-12 00:58:25,449 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] [2023-11-12 00:58:25,450 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] [2023-11-12 00:58:25,450 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] [2023-11-12 00:58:25,451 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] [2023-11-12 00:58:25,457 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] [2023-11-12 00:58:25,475 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 *)"include/linux/netdevice.h"), "i" (502), "i" (12UL)); [6934-6935] [2023-11-12 00:58:25,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6941] [2023-11-12 00:58:25,566 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] [2023-11-12 00:58:25,567 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] [2023-11-12 00:58:25,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7671] [2023-11-12 00:58:25,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7676] [2023-11-12 00:58:25,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7678] [2023-11-12 00:58:25,572 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] [2023-11-12 00:58:25,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7760] [2023-11-12 00:58:25,575 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] [2023-11-12 00:58:25,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7802] [2023-11-12 00:58:25,582 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] [2023-11-12 00:58:25,586 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] [2023-11-12 00:58:25,587 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] [2023-11-12 00:58:25,589 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] [2023-11-12 00:58:25,590 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] [2023-11-12 00:58:25,596 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] [2023-11-12 00:58:25,599 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] [2023-11-12 00:58:25,614 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8274] [2023-11-12 00:58:25,615 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8276] [2023-11-12 00:58:25,617 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] [2023-11-12 00:58:25,625 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] [2023-11-12 00:58:25,633 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] [2023-11-12 00:58:25,633 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] [2023-11-12 00:58:25,636 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] [2023-11-12 00:58:25,640 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8855] [2023-11-12 00:58:25,646 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8970] [2023-11-12 00:58:25,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9042] [2023-11-12 00:58:25,662 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9412] [2023-11-12 00:58:25,778 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_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2023-11-12 00:58:25,779 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_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2023-11-12 00:58:25,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:26,155 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:58:26,163 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:58:26,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26 WrapperNode [2023-11-12 00:58:26,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:26,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:26,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:58:26,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:58:26,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,547 INFO L138 Inliner]: procedures = 547, calls = 2370, calls flagged for inlining = 260, calls inlined = 202, statements flattened = 5195 [2023-11-12 00:58:26,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:26,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:58:26,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:58:26,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:58:26,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:58:26,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:58:26,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:58:26,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:58:26,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (1/1) ... [2023-11-12 00:58:26,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:26,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:26,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:58:26,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:58:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2023-11-12 00:58:26,996 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2023-11-12 00:58:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 00:58:26,997 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 00:58:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-12 00:58:26,997 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-12 00:58:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-12 00:58:26,998 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-12 00:58:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:58:26,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:58:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-12 00:58:26,998 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-12 00:58:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-12 00:58:26,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-12 00:58:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2023-11-12 00:58:26,999 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2023-11-12 00:58:26,999 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-12 00:58:26,999 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-12 00:58:27,000 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2023-11-12 00:58:27,000 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2023-11-12 00:58:27,001 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-12 00:58:27,001 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-12 00:58:27,002 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2023-11-12 00:58:27,002 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2023-11-12 00:58:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2023-11-12 00:58:27,003 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2023-11-12 00:58:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2023-11-12 00:58:27,003 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2023-11-12 00:58:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2023-11-12 00:58:27,003 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2023-11-12 00:58:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2023-11-12 00:58:27,004 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2023-11-12 00:58:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:58:27,005 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:58:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2023-11-12 00:58:27,005 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2023-11-12 00:58:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-12 00:58:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2023-11-12 00:58:27,006 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2023-11-12 00:58:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-12 00:58:27,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-12 00:58:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-12 00:58:27,006 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-12 00:58:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:58:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:58:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2023-11-12 00:58:27,008 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2023-11-12 00:58:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:58:27,008 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-12 00:58:27,008 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-12 00:58:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2023-11-12 00:58:27,009 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2023-11-12 00:58:27,009 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2023-11-12 00:58:27,010 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2023-11-12 00:58:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:58:27,010 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:58:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:58:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2023-11-12 00:58:27,010 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2023-11-12 00:58:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-12 00:58:27,011 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-12 00:58:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-11-12 00:58:27,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-11-12 00:58:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 00:58:27,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 00:58:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:58:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-12 00:58:27,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-12 00:58:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2023-11-12 00:58:27,013 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2023-11-12 00:58:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:58:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-12 00:58:27,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-12 00:58:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:58:27,015 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:58:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-12 00:58:27,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-12 00:58:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2023-11-12 00:58:27,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2023-11-12 00:58:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-12 00:58:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-12 00:58:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get [2023-11-12 00:58:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get [2023-11-12 00:58:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-12 00:58:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-12 00:58:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2023-11-12 00:58:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2023-11-12 00:58:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-12 00:58:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-12 00:58:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-12 00:58:27,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-12 00:58:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_uninit [2023-11-12 00:58:27,020 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_uninit [2023-11-12 00:58:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2023-11-12 00:58:27,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2023-11-12 00:58:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:58:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:58:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 00:58:27,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 00:58:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:58:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2023-11-12 00:58:27,023 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2023-11-12 00:58:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-12 00:58:27,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-12 00:58:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-12 00:58:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-12 00:58:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2023-11-12 00:58:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2023-11-12 00:58:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2023-11-12 00:58:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2023-11-12 00:58:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-12 00:58:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-12 00:58:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-12 00:58:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-12 00:58:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-12 00:58:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-12 00:58:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-12 00:58:27,026 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-12 00:58:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-12 00:58:27,026 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-12 00:58:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-12 00:58:27,026 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-12 00:58:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2023-11-12 00:58:27,027 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2023-11-12 00:58:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:58:27,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:58:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 00:58:27,027 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 00:58:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:58:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:58:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:58:27,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:58:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2023-11-12 00:58:27,028 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2023-11-12 00:58:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-12 00:58:27,029 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-12 00:58:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2023-11-12 00:58:27,029 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2023-11-12 00:58:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-12 00:58:27,029 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-12 00:58:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-12 00:58:27,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-12 00:58:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2023-11-12 00:58:27,030 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2023-11-12 00:58:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-12 00:58:27,030 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-12 00:58:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:58:27,031 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:58:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-12 00:58:27,031 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-12 00:58:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-11-12 00:58:27,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-11-12 00:58:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2023-11-12 00:58:27,032 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2023-11-12 00:58:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-12 00:58:27,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-12 00:58:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:58:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-12 00:58:27,033 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-12 00:58:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2023-11-12 00:58:27,033 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2023-11-12 00:58:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2023-11-12 00:58:27,033 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2023-11-12 00:58:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-12 00:58:27,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-12 00:58:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2023-11-12 00:58:27,034 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2023-11-12 00:58:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:58:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2023-11-12 00:58:27,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2023-11-12 00:58:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2023-11-12 00:58:27,035 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2023-11-12 00:58:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2023-11-12 00:58:27,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2023-11-12 00:58:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:58:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:58:27,036 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:58:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-12 00:58:27,036 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-12 00:58:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2023-11-12 00:58:27,036 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2023-11-12 00:58:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2023-11-12 00:58:27,037 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2023-11-12 00:58:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-12 00:58:27,037 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-12 00:58:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-12 00:58:27,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-12 00:58:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-11-12 00:58:27,038 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-11-12 00:58:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2023-11-12 00:58:27,038 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2023-11-12 00:58:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-12 00:58:27,038 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-12 00:58:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2023-11-12 00:58:27,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2023-11-12 00:58:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-12 00:58:27,039 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-12 00:58:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2023-11-12 00:58:27,039 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2023-11-12 00:58:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2023-11-12 00:58:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2023-11-12 00:58:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-12 00:58:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-12 00:58:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-12 00:58:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-12 00:58:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2023-11-12 00:58:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2023-11-12 00:58:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2023-11-12 00:58:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2023-11-12 00:58:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-12 00:58:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-12 00:58:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:58:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:58:27,042 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2023-11-12 00:58:27,042 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2023-11-12 00:58:27,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:58:27,042 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-11-12 00:58:27,042 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-11-12 00:58:27,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:58:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:58:27,043 INFO L130 BoogieDeclarations]: Found specification of procedure get_id_from_freelist [2023-11-12 00:58:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure get_id_from_freelist [2023-11-12 00:58:27,043 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-12 00:58:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-12 00:58:27,043 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2023-11-12 00:58:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2023-11-12 00:58:27,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-12 00:58:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-12 00:58:27,044 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-12 00:58:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-12 00:58:27,044 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2023-11-12 00:58:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2023-11-12 00:58:27,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2023-11-12 00:58:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2023-11-12 00:58:27,045 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2023-11-12 00:58:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2023-11-12 00:58:27,045 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-12 00:58:27,046 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-12 00:58:27,046 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2023-11-12 00:58:27,046 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2023-11-12 00:58:27,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-12 00:58:27,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-12 00:58:27,046 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2023-11-12 00:58:27,047 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2023-11-12 00:58:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2023-11-12 00:58:27,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2023-11-12 00:58:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:58:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-12 00:58:27,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-12 00:58:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-12 00:58:27,048 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-12 00:58:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-12 00:58:27,048 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-12 00:58:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2023-11-12 00:58:27,048 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2023-11-12 00:58:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2023-11-12 00:58:27,049 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2023-11-12 00:58:27,950 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:58:27,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:58:28,293 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:58:34,930 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:58:36,765 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:58:36,765 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:58:36,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:36 BoogieIcfgContainer [2023-11-12 00:58:36,773 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:58:36,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:58:36,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:58:36,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:58:36,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:58:20" (1/3) ... [2023-11-12 00:58:36,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f70ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:36, skipping insertion in model container [2023-11-12 00:58:36,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:26" (2/3) ... [2023-11-12 00:58:36,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f70ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:36, skipping insertion in model container [2023-11-12 00:58:36,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:36" (3/3) ... [2023-11-12 00:58:36,787 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-12 00:58:36,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:58:36,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:58:36,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:58:36,952 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;@372cda3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:58:36,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:58:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 1320 states, 738 states have (on average 1.2520325203252032) internal successors, (924), 780 states have internal predecessors, (924), 461 states have call successors, (461), 120 states have call predecessors, (461), 119 states have return successors, (457), 450 states have call predecessors, (457), 457 states have call successors, (457) [2023-11-12 00:58:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-12 00:58:37,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:37,021 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 00:58:37,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:37,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash -910400894, now seen corresponding path program 1 times [2023-11-12 00:58:37,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:37,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52753997] [2023-11-12 00:58:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:37,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-12 00:58:40,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:40,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52753997] [2023-11-12 00:58:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52753997] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:58:40,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188517623] [2023-11-12 00:58:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:40,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:40,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:40,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:40,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:58:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:42,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 00:58:42,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-12 00:58:42,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:42,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188517623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:42,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:58:42,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 12 [2023-11-12 00:58:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960966967] [2023-11-12 00:58:42,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:42,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:58:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:58:42,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:58:42,284 INFO L87 Difference]: Start difference. First operand has 1320 states, 738 states have (on average 1.2520325203252032) internal successors, (924), 780 states have internal predecessors, (924), 461 states have call successors, (461), 120 states have call predecessors, (461), 119 states have return successors, (457), 450 states have call predecessors, (457), 457 states have call successors, (457) Second operand has 10 states, 7 states have (on average 9.0) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-12 00:58:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:50,408 INFO L93 Difference]: Finished difference Result 2628 states and 3685 transitions. [2023-11-12 00:58:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:58:50,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 9.0) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 153 [2023-11-12 00:58:50,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:50,459 INFO L225 Difference]: With dead ends: 2628 [2023-11-12 00:58:50,459 INFO L226 Difference]: Without dead ends: 1288 [2023-11-12 00:58:50,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:58:50,487 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 11 mSDsluCounter, 12255 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13794 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:50,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 13794 Invalid, 2772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2760 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-12 00:58:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-11-12 00:58:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2023-11-12 00:58:50,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 732 states have (on average 1.2404371584699454) internal successors, (908), 770 states have internal predecessors, (908), 437 states have call successors, (437), 118 states have call predecessors, (437), 118 states have return successors, (437), 430 states have call predecessors, (437), 437 states have call successors, (437) [2023-11-12 00:58:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1782 transitions. [2023-11-12 00:58:50,739 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1782 transitions. Word has length 153 [2023-11-12 00:58:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:50,740 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1782 transitions. [2023-11-12 00:58:50,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 9.0) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-12 00:58:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1782 transitions. [2023-11-12 00:58:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-12 00:58:50,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:50,758 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 00:58:50,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:58:50,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:58:50,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:50,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1405497191, now seen corresponding path program 1 times [2023-11-12 00:58:50,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:50,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795195991] [2023-11-12 00:58:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:50,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-12 00:58:55,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:55,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795195991] [2023-11-12 00:58:55,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795195991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:58:55,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544267098] [2023-11-12 00:58:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:55,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:55,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:55,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:55,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2ab93e-0afd-48fe-93e1-cb12279fe58d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:58:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:57,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 2785 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-12 00:58:57,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-12 00:58:57,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:58:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-12 00:58:57,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544267098] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:58:57,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1150802781] [2023-11-12 00:58:57,568 INFO L159 IcfgInterpreter]: Started Sifa with 115 locations of interest [2023-11-12 00:58:57,569 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:58:57,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:58:57,579 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:58:57,580 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs