./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 30e01a73 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_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/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_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:39,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:39,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:32:39,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:39,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:39,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:39,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:39,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:39,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:39,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:39,205 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:39,206 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:39,207 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:39,208 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:32:39,209 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:39,209 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:39,210 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:32:39,210 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:32:39,211 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:39,211 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:32:39,212 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:32:39,212 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:32:39,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:39,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:32:39,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:39,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:39,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:32:39,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:39,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:32:39,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:32:39,218 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:39,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:39,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:39,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:39,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:39,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:39,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:39,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:32:39,220 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:32:39,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:32:39,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:39,221 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:32:39,221 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:39,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:39,222 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_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 [2023-11-23 21:32:39,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:39,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:39,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:39,598 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:39,598 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:39,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-23 21:32:42,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:43,857 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:43,858 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-23 21:32:43,952 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/data/dc2b9554e/641452960ae14e6aa9ae50ab0fc2b187/FLAG8405582c3 [2023-11-23 21:32:43,974 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/data/dc2b9554e/641452960ae14e6aa9ae50ab0fc2b187 [2023-11-23 21:32:43,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:43,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:43,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:43,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:43,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:43,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:43" (1/1) ... [2023-11-23 21:32:43,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c1ee6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:43, skipping insertion in model container [2023-11-23 21:32:43,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:43" (1/1) ... [2023-11-23 21:32:44,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:48,524 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_2891deee-d43f-4f41-89b4-b291b6781f5e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2023-11-23 21:32:48,530 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_2891deee-d43f-4f41-89b4-b291b6781f5e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2023-11-23 21:32:48,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:48,726 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:32:48,991 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] [2023-11-23 21:32:48,993 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] [2023-11-23 21:32:48,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [6138] [2023-11-23 21:32:49,001 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] [2023-11-23 21:32:49,002 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] [2023-11-23 21:32:49,004 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] [2023-11-23 21:32:49,004 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] [2023-11-23 21:32:49,006 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] [2023-11-23 21:32:49,007 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] [2023-11-23 21:32:49,009 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] [2023-11-23 21:32:49,019 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] [2023-11-23 21:32:49,045 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] [2023-11-23 21:32:49,046 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6941] [2023-11-23 21:32:49,110 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] [2023-11-23 21:32:49,111 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] [2023-11-23 21:32:49,114 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7671] [2023-11-23 21:32:49,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7676] [2023-11-23 21:32:49,116 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7678] [2023-11-23 21:32:49,120 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] [2023-11-23 21:32:49,120 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7760] [2023-11-23 21:32:49,124 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] [2023-11-23 21:32:49,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7802] [2023-11-23 21:32:49,131 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] [2023-11-23 21:32:49,134 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] [2023-11-23 21:32:49,136 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] [2023-11-23 21:32:49,138 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] [2023-11-23 21:32:49,140 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] [2023-11-23 21:32:49,146 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] [2023-11-23 21:32:49,154 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] [2023-11-23 21:32:49,161 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8274] [2023-11-23 21:32:49,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8276] [2023-11-23 21:32:49,166 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] [2023-11-23 21:32:49,175 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] [2023-11-23 21:32:49,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/net/xen-netfront.c"), "i" (855), "i" (12UL)); [8672-8673] [2023-11-23 21:32:49,186 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] [2023-11-23 21:32:49,232 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] [2023-11-23 21:32:49,235 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8855] [2023-11-23 21:32:49,242 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8970] [2023-11-23 21:32:49,246 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9042] [2023-11-23 21:32:49,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9412] [2023-11-23 21:32:49,435 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_2891deee-d43f-4f41-89b4-b291b6781f5e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2023-11-23 21:32:49,436 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2023-11-23 21:32:49,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:49,763 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:49,772 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:32:49,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49 WrapperNode [2023-11-23 21:32:49,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:49,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:49,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:32:49,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:32:49,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:49,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,253 INFO L138 Inliner]: procedures = 547, calls = 2370, calls flagged for inlining = 260, calls inlined = 202, statements flattened = 5195 [2023-11-23 21:32:50,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:50,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:32:50,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:32:50,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:32:50,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:32:50,615 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:32:50,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:32:50,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:32:50,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (1/1) ... [2023-11-23 21:32:50,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:50,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:50,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:32:50,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:32:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2023-11-23 21:32:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2023-11-23 21:32:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:32:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:32:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-23 21:32:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-23 21:32:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-23 21:32:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-23 21:32:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:32:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:32:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-23 21:32:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-23 21:32:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-23 21:32:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-23 21:32:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2023-11-23 21:32:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2023-11-23 21:32:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-23 21:32:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-23 21:32:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2023-11-23 21:32:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2023-11-23 21:32:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 21:32:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 21:32:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2023-11-23 21:32:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2023-11-23 21:32:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2023-11-23 21:32:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2023-11-23 21:32:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2023-11-23 21:32:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2023-11-23 21:32:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2023-11-23 21:32:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2023-11-23 21:32:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2023-11-23 21:32:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2023-11-23 21:32:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:32:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:32:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2023-11-23 21:32:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2023-11-23 21:32:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:32:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2023-11-23 21:32:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2023-11-23 21:32:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:32:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:32:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-23 21:32:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-23 21:32:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:32:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:32:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2023-11-23 21:32:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2023-11-23 21:32:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:32:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-23 21:32:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-23 21:32:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2023-11-23 21:32:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2023-11-23 21:32:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2023-11-23 21:32:50,699 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2023-11-23 21:32:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:32:50,699 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:32:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:32:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2023-11-23 21:32:50,699 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2023-11-23 21:32:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-23 21:32:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-23 21:32:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-11-23 21:32:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-11-23 21:32:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:32:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:32:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:32:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:32:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:32:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2023-11-23 21:32:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2023-11-23 21:32:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:32:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:32:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:32:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:32:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:32:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-23 21:32:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-23 21:32:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2023-11-23 21:32:50,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2023-11-23 21:32:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:32:50,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:32:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get [2023-11-23 21:32:50,702 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get [2023-11-23 21:32:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:32:50,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:32:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2023-11-23 21:32:50,702 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2023-11-23 21:32:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-23 21:32:50,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-23 21:32:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:32:50,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:32:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_uninit [2023-11-23 21:32:50,703 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_uninit [2023-11-23 21:32:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2023-11-23 21:32:50,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2023-11-23 21:32:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:32:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:32:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:32:50,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:32:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:32:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2023-11-23 21:32:50,704 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2023-11-23 21:32:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-23 21:32:50,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-23 21:32:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-23 21:32:50,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-23 21:32:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2023-11-23 21:32:50,705 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2023-11-23 21:32:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2023-11-23 21:32:50,705 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2023-11-23 21:32:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 21:32:50,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 21:32:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:32:50,705 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:32:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:32:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:32:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-23 21:32:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-23 21:32:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:32:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:32:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-23 21:32:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-23 21:32:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2023-11-23 21:32:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2023-11-23 21:32:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:32:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:32:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:32:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:32:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:32:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:32:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:32:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:32:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2023-11-23 21:32:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2023-11-23 21:32:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-23 21:32:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-23 21:32:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2023-11-23 21:32:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2023-11-23 21:32:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-23 21:32:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-23 21:32:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-23 21:32:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-23 21:32:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2023-11-23 21:32:50,709 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2023-11-23 21:32:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-23 21:32:50,709 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-23 21:32:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:32:50,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:32:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:32:50,709 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:32:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-11-23 21:32:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-11-23 21:32:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2023-11-23 21:32:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2023-11-23 21:32:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-23 21:32:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-23 21:32:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:32:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-23 21:32:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-23 21:32:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2023-11-23 21:32:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2023-11-23 21:32:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2023-11-23 21:32:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2023-11-23 21:32:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-23 21:32:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-23 21:32:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2023-11-23 21:32:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2023-11-23 21:32:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:32:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2023-11-23 21:32:50,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2023-11-23 21:32:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2023-11-23 21:32:50,712 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2023-11-23 21:32:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2023-11-23 21:32:50,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2023-11-23 21:32:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:32:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:32:50,712 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:32:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-23 21:32:50,713 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-23 21:32:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2023-11-23 21:32:50,713 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2023-11-23 21:32:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2023-11-23 21:32:50,713 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2023-11-23 21:32:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:32:50,713 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:32:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:32:50,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:32:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-11-23 21:32:50,714 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-11-23 21:32:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2023-11-23 21:32:50,714 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2023-11-23 21:32:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-23 21:32:50,714 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-23 21:32:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2023-11-23 21:32:50,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2023-11-23 21:32:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-23 21:32:50,714 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-23 21:32:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2023-11-23 21:32:50,715 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2023-11-23 21:32:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2023-11-23 21:32:50,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2023-11-23 21:32:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:32:50,715 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:32:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:32:50,715 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:32:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2023-11-23 21:32:50,715 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2023-11-23 21:32:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2023-11-23 21:32:50,716 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2023-11-23 21:32:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:32:50,716 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:32:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:32:50,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:32:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2023-11-23 21:32:50,716 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2023-11-23 21:32:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:32:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-11-23 21:32:50,717 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-11-23 21:32:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:32:50,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:32:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure get_id_from_freelist [2023-11-23 21:32:50,717 INFO L138 BoogieDeclarations]: Found implementation of procedure get_id_from_freelist [2023-11-23 21:32:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-23 21:32:50,717 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-23 21:32:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2023-11-23 21:32:50,717 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2023-11-23 21:32:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-23 21:32:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-23 21:32:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-23 21:32:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-23 21:32:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2023-11-23 21:32:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2023-11-23 21:32:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2023-11-23 21:32:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2023-11-23 21:32:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2023-11-23 21:32:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2023-11-23 21:32:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-23 21:32:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-23 21:32:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2023-11-23 21:32:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2023-11-23 21:32:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:32:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:32:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2023-11-23 21:32:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2023-11-23 21:32:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2023-11-23 21:32:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2023-11-23 21:32:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:32:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:32:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:32:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-23 21:32:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-23 21:32:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-23 21:32:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-23 21:32:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2023-11-23 21:32:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2023-11-23 21:32:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2023-11-23 21:32:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2023-11-23 21:32:51,721 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:32:51,730 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:32:52,016 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:32:55,995 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:32:57,699 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:32:57,699 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:32:57,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:57 BoogieIcfgContainer [2023-11-23 21:32:57,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:32:57,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:32:57,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:32:57,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:32:57,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:32:43" (1/3) ... [2023-11-23 21:32:57,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a70b6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:57, skipping insertion in model container [2023-11-23 21:32:57,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49" (2/3) ... [2023-11-23 21:32:57,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a70b6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:57, skipping insertion in model container [2023-11-23 21:32:57,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:57" (3/3) ... [2023-11-23 21:32:57,714 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-23 21:32:57,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:32:57,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:32:57,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:32:57,843 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;@e5f6106, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:32:57,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:32:57,855 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) [2023-11-23 21:32:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 21:32:57,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:57,891 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] [2023-11-23 21:32:57,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:32:57,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:57,898 INFO L85 PathProgramCache]: Analyzing trace with hash -501449738, now seen corresponding path program 1 times [2023-11-23 21:32:57,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:57,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775070486] [2023-11-23 21:32:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:57,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-23 21:33:02,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:33:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775070486] [2023-11-23 21:33:02,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775070486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:33:02,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022852944] [2023-11-23 21:33:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:02,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:33:02,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:33:02,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:33:02,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:33:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:03,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:33:03,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-23 21:33:03,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022852944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:03,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:33:03,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 12 [2023-11-23 21:33:03,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922124205] [2023-11-23 21:33:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:03,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:33:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:33:03,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:33:03,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:33:03,632 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) [2023-11-23 21:33:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:11,202 INFO L93 Difference]: Finished difference Result 2628 states and 3685 transitions. [2023-11-23 21:33:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:33:11,210 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 [2023-11-23 21:33:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:11,237 INFO L225 Difference]: With dead ends: 2628 [2023-11-23 21:33:11,237 INFO L226 Difference]: Without dead ends: 1288 [2023-11-23 21:33:11,257 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 [2023-11-23 21:33:11,260 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 11 mSDsluCounter, 12255 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s 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, 7.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:11,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 13794 Invalid, 2772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2760 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-23 21:33:11,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-11-23 21:33:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2023-11-23 21:33:11,419 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) [2023-11-23 21:33:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1782 transitions. [2023-11-23 21:33:11,439 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1782 transitions. Word has length 153 [2023-11-23 21:33:11,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:11,440 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1782 transitions. [2023-11-23 21:33:11,440 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) [2023-11-23 21:33:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1782 transitions. [2023-11-23 21:33:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-23 21:33:11,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:11,460 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] [2023-11-23 21:33:11,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:11,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:33:11,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:33:11,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash -619970989, now seen corresponding path program 1 times [2023-11-23 21:33:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:33:11,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273479800] [2023-11-23 21:33:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-23 21:33:17,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:33:17,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273479800] [2023-11-23 21:33:17,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273479800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:33:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145492911] [2023-11-23 21:33:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:17,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:33:17,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:33:17,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:33:17,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2891deee-d43f-4f41-89b4-b291b6781f5e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:33:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:18,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 21:33:18,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-23 21:33:18,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-23 21:33:19,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145492911] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:19,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1107694367] [2023-11-23 21:33:19,201 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2023-11-23 21:33:19,202 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:33:19,207 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:33:19,214 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:33:19,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs