./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_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_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/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_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/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_195f7898-b50b-4422-b5d4-1b0a438253c0/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 c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:01,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:01,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:13:01,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:01,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:01,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:01,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:01,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:01,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:01,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:01,451 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:01,452 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:01,453 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:01,454 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:01,455 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:01,455 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:01,456 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:01,456 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:01,457 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:01,458 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:01,459 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:01,460 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:01,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:01,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:01,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:01,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:01,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:01,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:01,464 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:01,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:01,466 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:01,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:01,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:01,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:01,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:01,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:01,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:01,478 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:01,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:01,478 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:01,479 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:01,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:01,479 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_195f7898-b50b-4422-b5d4-1b0a438253c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2023-11-12 00:13:01,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:01,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:01,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:01,836 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:01,837 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:01,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-12 00:13:04,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:05,670 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:05,671 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-12 00:13:05,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/data/42c033d24/bc40134f1f5b4f99a7a1d0ddd293e8ba/FLAG72984a4ca [2023-11-12 00:13:05,747 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/data/42c033d24/bc40134f1f5b4f99a7a1d0ddd293e8ba [2023-11-12 00:13:05,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:05,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:05,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:05,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:05,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:05,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1ea16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:05, skipping insertion in model container [2023-11-12 00:13:05,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:05" (1/1) ... [2023-11-12 00:13:05,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:09,965 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_195f7898-b50b-4422-b5d4-1b0a438253c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2023-11-12 00:13:09,970 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_195f7898-b50b-4422-b5d4-1b0a438253c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2023-11-12 00:13:10,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:10,046 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:10,212 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"); [6109] [2023-11-12 00:13:10,214 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)); [6116] [2023-11-12 00:13:10,215 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [6123] [2023-11-12 00:13:10,219 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/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/de2fed6/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [6227-6228] [2023-11-12 00:13:10,219 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"); [6233-6235] [2023-11-12 00:13:10,220 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/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/de2fed6/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (809), "i" (12UL)); [6260-6261] [2023-11-12 00:13:10,221 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"); [6266-6268] [2023-11-12 00:13:10,221 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/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/de2fed6/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (814), "i" (12UL)); [6292-6293] [2023-11-12 00:13:10,222 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"); [6298-6300] [2023-11-12 00:13:10,223 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)); [6335] [2023-11-12 00:13:10,231 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)); [6535-6536] [2023-11-12 00:13:10,251 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)); [6919-6920] [2023-11-12 00:13:10,252 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6926] [2023-11-12 00:13:10,287 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)); [7618-7619] [2023-11-12 00:13:10,288 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)); [7632-7633] [2023-11-12 00:13:10,290 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7656] [2023-11-12 00:13:10,290 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7661] [2023-11-12 00:13:10,291 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7663] [2023-11-12 00:13:10,293 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/net/xen-netfront.c"), "i" (374), "i" (12UL)); [7737-7738] [2023-11-12 00:13:10,298 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7745] [2023-11-12 00:13:10,300 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)); [7764-7765] [2023-11-12 00:13:10,310 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7787] [2023-11-12 00:13:10,316 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)); [7868-7869] [2023-11-12 00:13:10,319 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)); [7909-7910] [2023-11-12 00:13:10,320 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)); [7924-7925] [2023-11-12 00:13:10,321 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)); [7950-7951] [2023-11-12 00:13:10,322 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)); [7977-7978] [2023-11-12 00:13:10,325 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)); [8093] [2023-11-12 00:13:10,329 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)); [8207-8208] [2023-11-12 00:13:10,332 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8259] [2023-11-12 00:13:10,333 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8261] [2023-11-12 00:13:10,337 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)); [8324-8325] [2023-11-12 00:13:10,344 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)); [8507-8508] [2023-11-12 00:13:10,349 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)); [8657-8658] [2023-11-12 00:13:10,350 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)); [8674-8675] [2023-11-12 00:13:10,353 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)); [8752] [2023-11-12 00:13:10,356 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8840] [2023-11-12 00:13:10,361 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8955] [2023-11-12 00:13:10,364 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9027] [2023-11-12 00:13:10,379 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9397] [2023-11-12 00:13:10,576 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_195f7898-b50b-4422-b5d4-1b0a438253c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2023-11-12 00:13:10,579 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_195f7898-b50b-4422-b5d4-1b0a438253c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2023-11-12 00:13:10,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:10,893 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:10,901 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:10,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10 WrapperNode [2023-11-12 00:13:10,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:10,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:10,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:10,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:10,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,279 INFO L138 Inliner]: procedures = 562, calls = 2419, calls flagged for inlining = 267, calls inlined = 188, statements flattened = 4629 [2023-11-12 00:13:11,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:11,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:11,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:11,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:11,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:11,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:11,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:11,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:11,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (1/1) ... [2023-11-12 00:13:11,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:11,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:11,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:11,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_195f7898-b50b-4422-b5d4-1b0a438253c0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:11,648 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2023-11-12 00:13:11,648 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2023-11-12 00:13:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 00:13:11,649 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 00:13:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-12 00:13:11,649 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-12 00:13:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-12 00:13:11,649 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-12 00:13:11,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:13:11,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:13:11,650 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-12 00:13:11,650 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-12 00:13:11,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-12 00:13:11,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-12 00:13:11,650 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2023-11-12 00:13:11,651 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2023-11-12 00:13:11,651 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-12 00:13:11,651 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-12 00:13:11,651 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2023-11-12 00:13:11,651 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2023-11-12 00:13:11,651 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-12 00:13:11,651 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-12 00:13:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2023-11-12 00:13:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2023-11-12 00:13:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2023-11-12 00:13:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2023-11-12 00:13:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2023-11-12 00:13:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2023-11-12 00:13:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2023-11-12 00:13:11,653 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2023-11-12 00:13:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2023-11-12 00:13:11,653 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2023-11-12 00:13:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:13:11,653 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:13:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2023-11-12 00:13:11,653 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2023-11-12 00:13:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-12 00:13:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2023-11-12 00:13:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2023-11-12 00:13:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-12 00:13:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-12 00:13:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-12 00:13:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-12 00:13:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:13:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:13:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2023-11-12 00:13:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2023-11-12 00:13:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:13:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-12 00:13:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-12 00:13:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2023-11-12 00:13:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2023-11-12 00:13:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2023-11-12 00:13:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2023-11-12 00:13:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:13:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:13:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2023-11-12 00:13:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2023-11-12 00:13:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-12 00:13:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-12 00:13:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-11-12 00:13:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-11-12 00:13:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 00:13:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 00:13:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:13:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-12 00:13:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-12 00:13:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:13:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-12 00:13:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-12 00:13:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-12 00:13:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-12 00:13:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2023-11-12 00:13:11,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2023-11-12 00:13:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-12 00:13:11,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-12 00:13:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-12 00:13:11,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-12 00:13:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2023-11-12 00:13:11,659 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2023-11-12 00:13:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-12 00:13:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-12 00:13:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-12 00:13:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-12 00:13:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2023-11-12 00:13:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2023-11-12 00:13:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:13:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-12 00:13:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-12 00:13:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:13:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 00:13:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 00:13:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:13:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-12 00:13:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-12 00:13:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-12 00:13:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-12 00:13:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2023-11-12 00:13:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2023-11-12 00:13:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-12 00:13:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-12 00:13:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-12 00:13:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-12 00:13:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-12 00:13:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-12 00:13:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-12 00:13:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-12 00:13:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-12 00:13:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-12 00:13:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2023-11-12 00:13:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2023-11-12 00:13:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_netif_exit_20_2 [2023-11-12 00:13:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_netif_exit_20_2 [2023-11-12 00:13:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 00:13:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 00:13:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:13:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:13:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2023-11-12 00:13:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2023-11-12 00:13:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-12 00:13:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-12 00:13:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2023-11-12 00:13:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2023-11-12 00:13:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-12 00:13:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-12 00:13:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-12 00:13:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-12 00:13:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-12 00:13:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-12 00:13:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:13:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:13:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-12 00:13:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-12 00:13:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-11-12 00:13:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-11-12 00:13:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2023-11-12 00:13:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2023-11-12 00:13:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-12 00:13:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-12 00:13:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:13:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-12 00:13:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-12 00:13:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2023-11-12 00:13:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2023-11-12 00:13:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2023-11-12 00:13:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2023-11-12 00:13:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-12 00:13:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-12 00:13:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:13:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2023-11-12 00:13:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2023-11-12 00:13:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2023-11-12 00:13:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2023-11-12 00:13:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2023-11-12 00:13:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2023-11-12 00:13:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:13:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:13:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:13:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-12 00:13:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-12 00:13:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2023-11-12 00:13:11,671 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2023-11-12 00:13:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2023-11-12 00:13:11,671 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2023-11-12 00:13:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-12 00:13:11,671 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-12 00:13:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-12 00:13:11,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-12 00:13:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-11-12 00:13:11,672 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-11-12 00:13:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2023-11-12 00:13:11,672 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2023-11-12 00:13:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-12 00:13:11,672 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-12 00:13:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2023-11-12 00:13:11,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2023-11-12 00:13:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-12 00:13:11,673 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-12 00:13:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2023-11-12 00:13:11,673 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2023-11-12 00:13:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2023-11-12 00:13:11,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2023-11-12 00:13:11,674 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-12 00:13:11,674 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-12 00:13:11,674 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-12 00:13:11,674 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-12 00:13:11,674 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2023-11-12 00:13:11,674 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2023-11-12 00:13:11,674 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2023-11-12 00:13:11,724 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2023-11-12 00:13:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-12 00:13:11,724 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-12 00:13:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:13:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:13:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2023-11-12 00:13:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2023-11-12 00:13:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:13:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:13:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:13:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-12 00:13:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-12 00:13:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2023-11-12 00:13:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2023-11-12 00:13:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-12 00:13:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-12 00:13:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-12 00:13:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-12 00:13:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2023-11-12 00:13:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2023-11-12 00:13:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2023-11-12 00:13:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2023-11-12 00:13:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2023-11-12 00:13:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2023-11-12 00:13:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-12 00:13:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-12 00:13:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2023-11-12 00:13:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2023-11-12 00:13:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-12 00:13:11,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-12 00:13:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2023-11-12 00:13:11,727 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2023-11-12 00:13:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2023-11-12 00:13:11,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2023-11-12 00:13:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:13:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-12 00:13:11,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-12 00:13:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-12 00:13:11,727 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-12 00:13:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-12 00:13:11,727 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-12 00:13:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2023-11-12 00:13:11,728 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2023-11-12 00:13:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2023-11-12 00:13:11,728 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2023-11-12 00:13:12,506 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:12,510 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:12,762 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:13:18,895 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-12 00:13:19,163 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:20,503 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:20,504 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:13:20,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:20 BoogieIcfgContainer [2023-11-12 00:13:20,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:20,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:20,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:20,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:20,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:05" (1/3) ... [2023-11-12 00:13:20,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bab3af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:20, skipping insertion in model container [2023-11-12 00:13:20,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:10" (2/3) ... [2023-11-12 00:13:20,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bab3af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:20, skipping insertion in model container [2023-11-12 00:13:20,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:20" (3/3) ... [2023-11-12 00:13:20,526 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-12 00:13:20,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:20,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:13:20,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:20,657 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;@6ff48ac6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:20,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:13:20,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 1318 states, 748 states have (on average 1.2700534759358288) internal successors, (950), 770 states have internal predecessors, (950), 459 states have call successors, (459), 111 states have call predecessors, (459), 110 states have return successors, (454), 449 states have call predecessors, (454), 454 states have call successors, (454) [2023-11-12 00:13:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-11-12 00:13:20,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:20,739 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:20,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:20,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:20,749 INFO L85 PathProgramCache]: Analyzing trace with hash -830314801, now seen corresponding path program 1 times [2023-11-12 00:13:20,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:20,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305372096] [2023-11-12 00:13:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:20,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2023-11-12 00:13:22,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:22,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305372096] [2023-11-12 00:13:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305372096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:22,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:22,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:22,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808517619] [2023-11-12 00:13:22,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:22,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:22,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:22,156 INFO L87 Difference]: Start difference. First operand has 1318 states, 748 states have (on average 1.2700534759358288) internal successors, (950), 770 states have internal predecessors, (950), 459 states have call successors, (459), 111 states have call predecessors, (459), 110 states have return successors, (454), 449 states have call predecessors, (454), 454 states have call successors, (454) Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-12 00:13:24,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:24,159 INFO L93 Difference]: Finished difference Result 3798 states and 5404 transitions. [2023-11-12 00:13:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:24,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 395 [2023-11-12 00:13:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:24,201 INFO L225 Difference]: With dead ends: 3798 [2023-11-12 00:13:24,201 INFO L226 Difference]: Without dead ends: 2465 [2023-11-12 00:13:24,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:24,220 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1705 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:24,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 3168 Invalid, 571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 00:13:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2023-11-12 00:13:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2461. [2023-11-12 00:13:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 1428 states have (on average 1.265406162464986) internal successors, (1807), 1472 states have internal predecessors, (1807), 816 states have call successors, (816), 216 states have call predecessors, (816), 216 states have return successors, (816), 804 states have call predecessors, (816), 816 states have call successors, (816) [2023-11-12 00:13:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3439 transitions. [2023-11-12 00:13:24,504 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3439 transitions. Word has length 395 [2023-11-12 00:13:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:24,506 INFO L495 AbstractCegarLoop]: Abstraction has 2461 states and 3439 transitions. [2023-11-12 00:13:24,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-12 00:13:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3439 transitions. [2023-11-12 00:13:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-12 00:13:24,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:24,526 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:24,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:13:24,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:24,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:24,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1393891440, now seen corresponding path program 1 times [2023-11-12 00:13:24,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:24,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385227074] [2023-11-12 00:13:24,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:24,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2023-11-12 00:13:25,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:25,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385227074] [2023-11-12 00:13:25,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385227074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:25,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:25,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:25,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147630289] [2023-11-12 00:13:25,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:25,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:25,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:25,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:25,130 INFO L87 Difference]: Start difference. First operand 2461 states and 3439 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-11-12 00:13:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:27,047 INFO L93 Difference]: Finished difference Result 7203 states and 10046 transitions. [2023-11-12 00:13:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 399 [2023-11-12 00:13:27,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:27,093 INFO L225 Difference]: With dead ends: 7203 [2023-11-12 00:13:27,093 INFO L226 Difference]: Without dead ends: 4801 [2023-11-12 00:13:27,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:27,107 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 1640 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:27,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 3053 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 00:13:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2023-11-12 00:13:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4797. [2023-11-12 00:13:27,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4797 states, 2790 states have (on average 1.2659498207885305) internal successors, (3532), 2880 states have internal predecessors, (3532), 1575 states have call successors, (1575), 431 states have call predecessors, (1575), 431 states have return successors, (1575), 1549 states have call predecessors, (1575), 1575 states have call successors, (1575) [2023-11-12 00:13:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 6682 transitions. [2023-11-12 00:13:27,465 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 6682 transitions. Word has length 399 [2023-11-12 00:13:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:27,471 INFO L495 AbstractCegarLoop]: Abstraction has 4797 states and 6682 transitions. [2023-11-12 00:13:27,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-11-12 00:13:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 6682 transitions. [2023-11-12 00:13:27,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-11-12 00:13:27,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:27,494 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:27,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:13:27,495 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:27,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:27,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1025500955, now seen corresponding path program 1 times [2023-11-12 00:13:27,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:27,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193408771] [2023-11-12 00:13:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:27,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2023-11-12 00:13:28,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:28,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193408771] [2023-11-12 00:13:28,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193408771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:28,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:28,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:28,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884415978] [2023-11-12 00:13:28,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:28,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:28,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:28,215 INFO L87 Difference]: Start difference. First operand 4797 states and 6682 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-11-12 00:13:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:30,897 INFO L93 Difference]: Finished difference Result 14147 states and 19679 transitions. [2023-11-12 00:13:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:30,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 400 [2023-11-12 00:13:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:30,987 INFO L225 Difference]: With dead ends: 14147 [2023-11-12 00:13:30,987 INFO L226 Difference]: Without dead ends: 9409 [2023-11-12 00:13:31,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:31,014 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 1639 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:31,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 3260 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-12 00:13:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9409 states. [2023-11-12 00:13:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9409 to 9405. [2023-11-12 00:13:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9405 states, 5480 states have (on average 1.264963503649635) internal successors, (6932), 5662 states have internal predecessors, (6932), 3065 states have call successors, (3065), 859 states have call predecessors, (3065), 859 states have return successors, (3065), 3011 states have call predecessors, (3065), 3065 states have call successors, (3065) [2023-11-12 00:13:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 13062 transitions. [2023-11-12 00:13:31,846 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 13062 transitions. Word has length 400 [2023-11-12 00:13:31,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:31,847 INFO L495 AbstractCegarLoop]: Abstraction has 9405 states and 13062 transitions. [2023-11-12 00:13:31,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-11-12 00:13:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 13062 transitions. [2023-11-12 00:13:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-12 00:13:31,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:31,883 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 29, 29, 29, 29, 29, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:31,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:13:31,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:31,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash -160687213, now seen corresponding path program 1 times [2023-11-12 00:13:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:31,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139291332] [2023-11-12 00:13:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:31,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3398 trivial. 0 not checked. [2023-11-12 00:13:32,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:32,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139291332] [2023-11-12 00:13:32,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139291332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:32,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:32,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:32,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190503515] [2023-11-12 00:13:32,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:32,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:32,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:32,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:32,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:32,652 INFO L87 Difference]: Start difference. First operand 9405 states and 13062 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-11-12 00:13:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:34,963 INFO L93 Difference]: Finished difference Result 19909 states and 27573 transitions. [2023-11-12 00:13:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:34,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 415 [2023-11-12 00:13:34,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:35,066 INFO L225 Difference]: With dead ends: 19909 [2023-11-12 00:13:35,074 INFO L226 Difference]: Without dead ends: 10563 [2023-11-12 00:13:35,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:35,128 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1502 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 3124 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:35,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 3124 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 00:13:35,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10563 states. [2023-11-12 00:13:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10563 to 10561. [2023-11-12 00:13:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10561 states, 6154 states have (on average 1.2619434514137147) internal successors, (7766), 6357 states have internal predecessors, (7766), 3414 states have call successors, (3414), 992 states have call predecessors, (3414), 992 states have return successors, (3414), 3355 states have call predecessors, (3414), 3414 states have call successors, (3414) [2023-11-12 00:13:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10561 states to 10561 states and 14594 transitions. [2023-11-12 00:13:36,243 INFO L78 Accepts]: Start accepts. Automaton has 10561 states and 14594 transitions. Word has length 415 [2023-11-12 00:13:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:36,244 INFO L495 AbstractCegarLoop]: Abstraction has 10561 states and 14594 transitions. [2023-11-12 00:13:36,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-11-12 00:13:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10561 states and 14594 transitions. [2023-11-12 00:13:36,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-11-12 00:13:36,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:36,289 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:36,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:13:36,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:36,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:36,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1132198271, now seen corresponding path program 1 times [2023-11-12 00:13:36,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:36,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458951837] [2023-11-12 00:13:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:36,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2023-11-12 00:13:36,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:36,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458951837] [2023-11-12 00:13:36,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458951837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:36,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:36,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:36,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614226077] [2023-11-12 00:13:36,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:36,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:36,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:36,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:36,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:36,844 INFO L87 Difference]: Start difference. First operand 10561 states and 14594 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-11-12 00:13:40,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:40,310 INFO L93 Difference]: Finished difference Result 24643 states and 34055 transitions. [2023-11-12 00:13:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:40,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 447 [2023-11-12 00:13:40,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:40,394 INFO L225 Difference]: With dead ends: 24643 [2023-11-12 00:13:40,395 INFO L226 Difference]: Without dead ends: 15209 [2023-11-12 00:13:40,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:40,434 INFO L413 NwaCegarLoop]: 2684 mSDtfsCounter, 1640 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:40,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4185 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-12 00:13:40,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15209 states. [2023-11-12 00:13:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15209 to 15205. [2023-11-12 00:13:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15205 states, 8860 states have (on average 1.262076749435666) internal successors, (11182), 9155 states have internal predecessors, (11182), 4908 states have call successors, (4908), 1436 states have call predecessors, (4908), 1436 states have return successors, (4908), 4821 states have call predecessors, (4908), 4908 states have call successors, (4908) [2023-11-12 00:13:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15205 states to 15205 states and 20998 transitions. [2023-11-12 00:13:41,648 INFO L78 Accepts]: Start accepts. Automaton has 15205 states and 20998 transitions. Word has length 447 [2023-11-12 00:13:41,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:41,650 INFO L495 AbstractCegarLoop]: Abstraction has 15205 states and 20998 transitions. [2023-11-12 00:13:41,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-11-12 00:13:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 15205 states and 20998 transitions. [2023-11-12 00:13:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-11-12 00:13:41,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:41,691 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:41,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:13:41,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:41,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash 843474874, now seen corresponding path program 1 times [2023-11-12 00:13:41,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:41,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446120591] [2023-11-12 00:13:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:41,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2023-11-12 00:13:42,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:42,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446120591] [2023-11-12 00:13:42,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446120591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:42,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:42,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:42,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664018814] [2023-11-12 00:13:42,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:42,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:42,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:42,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:42,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:42,180 INFO L87 Difference]: Start difference. First operand 15205 states and 20998 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54)