./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:46,740 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:46,830 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:17:46,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:46,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:46,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:46,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:46,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:46,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:46,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:46,893 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:46,893 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:46,894 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:46,895 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:17:46,896 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:46,896 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:46,897 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:17:46,897 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:17:46,898 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:46,898 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:17:46,898 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:17:46,899 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:17:46,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:46,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:46,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:17:46,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:46,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:46,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:46,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:46,903 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:46,905 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:46,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:46,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:46,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:46,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:46,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:46,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:46,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:46,909 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:17:46,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:17:46,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:46,910 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:46,910 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:46,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:46,911 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_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 [2023-11-23 21:17:47,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:47,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:47,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:47,221 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:47,222 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:47,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2023-11-23 21:17:50,487 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:51,276 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:51,277 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2023-11-23 21:17:51,349 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/data/355871391/309ee579961a4070a60ebf3e19087bc0/FLAGe98dfcc7c [2023-11-23 21:17:51,366 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/data/355871391/309ee579961a4070a60ebf3e19087bc0 [2023-11-23 21:17:51,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:51,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:51,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:51,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:51,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:51,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:51" (1/1) ... [2023-11-23 21:17:51,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a17eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:51, skipping insertion in model container [2023-11-23 21:17:51,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:51" (1/1) ... [2023-11-23 21:17:51,651 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:55,061 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_bc61a1f3-2e82-4c55-bc6c-d779648de65a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[347848,347861] [2023-11-23 21:17:55,069 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_bc61a1f3-2e82-4c55-bc6c-d779648de65a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348017,348030] [2023-11-23 21:17:55,069 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_bc61a1f3-2e82-4c55-bc6c-d779648de65a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348184,348197] [2023-11-23 21:17:55,070 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_bc61a1f3-2e82-4c55-bc6c-d779648de65a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348352,348365] [2023-11-23 21:17:55,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:55,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:55,329 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"); [5698] [2023-11-23 21:17:55,331 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)); [5705] [2023-11-23 21:17:55,331 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5712] [2023-11-23 21:17:55,333 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/f860c18/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [5752-5753] [2023-11-23 21:17:55,334 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"); [5758-5760] [2023-11-23 21:17:55,335 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)); [5787] [2023-11-23 21:17:55,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [5841] [2023-11-23 21:17:55,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [5844] [2023-11-23 21:17:55,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [5847] [2023-11-23 21:17:55,340 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [5850] [2023-11-23 21:17:55,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5902] [2023-11-23 21:17:55,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5910] [2023-11-23 21:17:55,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [5917] [2023-11-23 21:17:55,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [5925] [2023-11-23 21:17:55,350 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [6030-6031] [2023-11-23 21:17:55,352 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/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [6064-6065] [2023-11-23 21:17:55,353 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/asm-generic/dma-mapping-common.h"), "i" (103), "i" (12UL)); [6101-6102] [2023-11-23 21:17:55,355 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/asm-generic/dma-mapping-common.h"), "i" (115), "i" (12UL)); [6138-6139] [2023-11-23 21:17:55,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6762] [2023-11-23 21:17:55,457 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7988] [2023-11-23 21:17:55,457 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7990] [2023-11-23 21:17:55,465 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8221] [2023-11-23 21:17:55,465 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8223] [2023-11-23 21:17:55,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8615] [2023-11-23 21:17:55,481 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8627] [2023-11-23 21:17:55,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8686] [2023-11-23 21:17:55,489 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8873] [2023-11-23 21:17:55,684 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_bc61a1f3-2e82-4c55-bc6c-d779648de65a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[347848,347861] [2023-11-23 21:17:55,685 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_bc61a1f3-2e82-4c55-bc6c-d779648de65a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348017,348030] [2023-11-23 21:17:55,685 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_bc61a1f3-2e82-4c55-bc6c-d779648de65a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348184,348197] [2023-11-23 21:17:55,686 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_bc61a1f3-2e82-4c55-bc6c-d779648de65a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348352,348365] [2023-11-23 21:17:55,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:55,893 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:17:55,894 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:17:55,902 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:55,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55 WrapperNode [2023-11-23 21:17:55,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:55,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:55,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:55,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:55,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,264 INFO L138 Inliner]: procedures = 451, calls = 2467, calls flagged for inlining = 206, calls inlined = 184, statements flattened = 5885 [2023-11-23 21:17:56,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:56,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:56,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:56,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:56,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,449 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:56,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:56,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:56,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:56,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (1/1) ... [2023-11-23 21:17:56,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:56,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:56,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:56,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc61a1f3-2e82-4c55-bc6c-d779648de65a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-23 21:17:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-23 21:17:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-23 21:17:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-23 21:17:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:17:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:17:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:17:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:17:56,678 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2023-11-23 21:17:56,678 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2023-11-23 21:17:56,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:17:56,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:17:56,678 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2023-11-23 21:17:56,678 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2023-11-23 21:17:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:17:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:17:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2023-11-23 21:17:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2023-11-23 21:17:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:17:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:17:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2023-11-23 21:17:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2023-11-23 21:17:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 21:17:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 21:17:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_65 [2023-11-23 21:17:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_65 [2023-11-23 21:17:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-23 21:17:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-23 21:17:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:17:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_close [2023-11-23 21:17:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_close [2023-11-23 21:17:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2023-11-23 21:17:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2023-11-23 21:17:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-11-23 21:17:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-11-23 21:17:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:17:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:17:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2023-11-23 21:17:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2023-11-23 21:17:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:17:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:17:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2023-11-23 21:17:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2023-11-23 21:17:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-23 21:17:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-23 21:17:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:17:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2023-11-23 21:17:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2023-11-23 21:17:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-23 21:17:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-23 21:17:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:17:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:17:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2023-11-23 21:17:56,685 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2023-11-23 21:17:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:17:56,685 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:17:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:17:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2023-11-23 21:17:56,686 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2023-11-23 21:17:56,686 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:17:56,686 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:17:56,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:17:56,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:17:56,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:17:56,686 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2023-11-23 21:17:56,687 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2023-11-23 21:17:56,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:17:56,687 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:17:56,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:17:56,687 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2023-11-23 21:17:56,687 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2023-11-23 21:17:56,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:17:56,688 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:17:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:17:56,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:17:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2023-11-23 21:17:56,688 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2023-11-23 21:17:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2023-11-23 21:17:56,689 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2023-11-23 21:17:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-23 21:17:56,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-23 21:17:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-11-23 21:17:56,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-11-23 21:17:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2023-11-23 21:17:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2023-11-23 21:17:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 21:17:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 21:17:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 21:17:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 21:17:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2023-11-23 21:17:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2023-11-23 21:17:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2023-11-23 21:17:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2023-11-23 21:17:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:17:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:17:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:17:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:17:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:17:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2023-11-23 21:17:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2023-11-23 21:17:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-11-23 21:17:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-11-23 21:17:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:17:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:17:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:17:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:17:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:17:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 21:17:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_open [2023-11-23 21:17:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_open [2023-11-23 21:17:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:17:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:17:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_vlsi_mod_exit_11_2 [2023-11-23 21:17:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_vlsi_mod_exit_11_2 [2023-11-23 21:17:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-23 21:17:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-23 21:17:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 21:17:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 21:17:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:17:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:17:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:17:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:17:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2023-11-23 21:17:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2023-11-23 21:17:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2023-11-23 21:17:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2023-11-23 21:17:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:17:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:17:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:17:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:17:56,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:17:56,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:17:56,753 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2023-11-23 21:17:56,753 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2023-11-23 21:17:56,753 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2023-11-23 21:17:56,753 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2023-11-23 21:17:56,753 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2023-11-23 21:17:56,753 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2023-11-23 21:17:56,754 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:17:56,754 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:17:56,754 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-23 21:17:56,754 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-23 21:17:56,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:17:56,754 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:17:56,754 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:17:56,754 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:17:56,754 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2023-11-23 21:17:56,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2023-11-23 21:17:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-23 21:17:56,755 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-23 21:17:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:17:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-23 21:17:56,755 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-23 21:17:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:17:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2023-11-23 21:17:56,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2023-11-23 21:17:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2023-11-23 21:17:56,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2023-11-23 21:17:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:17:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:17:56,757 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:17:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2023-11-23 21:17:56,757 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2023-11-23 21:17:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2023-11-23 21:17:56,758 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2023-11-23 21:17:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-23 21:17:56,758 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-23 21:17:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:17:56,758 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:17:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:17:56,758 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:17:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 21:17:56,758 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 21:17:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:17:56,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:17:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 21:17:56,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 21:17:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2023-11-23 21:17:56,759 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2023-11-23 21:17:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2023-11-23 21:17:56,759 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2023-11-23 21:17:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:17:56,759 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:17:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:17:56,763 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:17:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:17:56,763 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:17:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:17:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:17:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:17:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-11-23 21:17:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-11-23 21:17:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:17:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:17:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2023-11-23 21:17:56,765 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2023-11-23 21:17:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-11-23 21:17:56,765 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-11-23 21:17:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-23 21:17:56,766 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-23 21:17:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2023-11-23 21:17:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2023-11-23 21:17:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:17:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:17:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2023-11-23 21:17:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2023-11-23 21:17:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vlsi_irda_dev [2023-11-23 21:17:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vlsi_irda_dev [2023-11-23 21:17:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2023-11-23 21:17:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2023-11-23 21:17:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2023-11-23 21:17:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2023-11-23 21:17:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2023-11-23 21:17:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2023-11-23 21:17:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-23 21:17:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-23 21:17:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:17:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2023-11-23 21:17:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2023-11-23 21:17:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:17:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:17:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2023-11-23 21:17:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2023-11-23 21:17:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2023-11-23 21:17:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2023-11-23 21:17:57,607 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:57,618 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:58,052 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:18:02,508 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:18:02,706 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:05,409 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:05,410 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:18:05,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:05 BoogieIcfgContainer [2023-11-23 21:18:05,413 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:05,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:05,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:05,423 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:05,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:51" (1/3) ... [2023-11-23 21:18:05,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5ba89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:05, skipping insertion in model container [2023-11-23 21:18:05,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:55" (2/3) ... [2023-11-23 21:18:05,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5ba89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:05, skipping insertion in model container [2023-11-23 21:18:05,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:05" (3/3) ... [2023-11-23 21:18:05,434 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2023-11-23 21:18:05,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:05,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 21:18:05,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:05,598 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;@3ea8bb93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:05,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 21:18:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 1595 states, 920 states have (on average 1.2782608695652173) internal successors, (1176), 944 states have internal predecessors, (1176), 568 states have call successors, (568), 105 states have call predecessors, (568), 104 states have return successors, (561), 559 states have call predecessors, (561), 561 states have call successors, (561) [2023-11-23 21:18:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 21:18:05,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:05,642 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:05,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:18:05,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:05,649 INFO L85 PathProgramCache]: Analyzing trace with hash -922814028, now seen corresponding path program 1 times [2023-11-23 21:18:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:05,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429011315] [2023-11-23 21:18:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-23 21:18:06,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:06,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429011315] [2023-11-23 21:18:06,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429011315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:06,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:06,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:06,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21667256] [2023-11-23 21:18:06,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:06,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:06,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:06,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:06,962 INFO L87 Difference]: Start difference. First operand has 1595 states, 920 states have (on average 1.2782608695652173) internal successors, (1176), 944 states have internal predecessors, (1176), 568 states have call successors, (568), 105 states have call predecessors, (568), 104 states have return successors, (561), 559 states have call predecessors, (561), 561 states have call successors, (561) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:18:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:12,543 INFO L93 Difference]: Finished difference Result 4581 states and 6700 transitions. [2023-11-23 21:18:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:12,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 130 [2023-11-23 21:18:12,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:12,606 INFO L225 Difference]: With dead ends: 4581 [2023-11-23 21:18:12,606 INFO L226 Difference]: Without dead ends: 2993 [2023-11-23 21:18:12,646 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 [2023-11-23 21:18:12,650 INFO L413 NwaCegarLoop]: 2181 mSDtfsCounter, 2094 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:12,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 4165 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-23 21:18:12,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2023-11-23 21:18:12,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2965. [2023-11-23 21:18:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 1720 states have (on average 1.2732558139534884) internal successors, (2190), 1773 states have internal predecessors, (2190), 1040 states have call successors, (1040), 205 states have call predecessors, (1040), 202 states have return successors, (1043), 1023 states have call predecessors, (1043), 1036 states have call successors, (1043) [2023-11-23 21:18:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4273 transitions. [2023-11-23 21:18:13,000 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4273 transitions. Word has length 130 [2023-11-23 21:18:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:13,001 INFO L495 AbstractCegarLoop]: Abstraction has 2965 states and 4273 transitions. [2023-11-23 21:18:13,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:18:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4273 transitions. [2023-11-23 21:18:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 21:18:13,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:13,008 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:13,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:18:13,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:18:13,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:13,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1370304817, now seen corresponding path program 1 times [2023-11-23 21:18:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:13,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557276243] [2023-11-23 21:18:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-23 21:18:13,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557276243] [2023-11-23 21:18:13,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557276243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:13,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:13,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:13,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317506424] [2023-11-23 21:18:13,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:13,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:13,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:13,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:13,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:13,881 INFO L87 Difference]: Start difference. First operand 2965 states and 4273 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:18:16,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:20,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:20,150 INFO L93 Difference]: Finished difference Result 8703 states and 12524 transitions. [2023-11-23 21:18:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:20,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2023-11-23 21:18:20,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:20,228 INFO L225 Difference]: With dead ends: 8703 [2023-11-23 21:18:20,228 INFO L226 Difference]: Without dead ends: 5761 [2023-11-23 21:18:20,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:20,253 INFO L413 NwaCegarLoop]: 2056 mSDtfsCounter, 2163 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:20,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 4006 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-23 21:18:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2023-11-23 21:18:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5757. [2023-11-23 21:18:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5757 states, 3348 states have (on average 1.2691158900836321) internal successors, (4249), 3442 states have internal predecessors, (4249), 2005 states have call successors, (2005), 406 states have call predecessors, (2005), 401 states have return successors, (2015), 1978 states have call predecessors, (2015), 2001 states have call successors, (2015) [2023-11-23 21:18:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5757 states to 5757 states and 8269 transitions. [2023-11-23 21:18:20,931 INFO L78 Accepts]: Start accepts. Automaton has 5757 states and 8269 transitions. Word has length 131 [2023-11-23 21:18:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:20,932 INFO L495 AbstractCegarLoop]: Abstraction has 5757 states and 8269 transitions. [2023-11-23 21:18:20,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:18:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5757 states and 8269 transitions. [2023-11-23 21:18:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 21:18:20,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:20,937 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:20,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:18:20,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:18:20,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:20,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1821883289, now seen corresponding path program 1 times [2023-11-23 21:18:20,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:20,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225739988] [2023-11-23 21:18:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:20,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-23 21:18:21,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225739988] [2023-11-23 21:18:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225739988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:21,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:21,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:21,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964820966] [2023-11-23 21:18:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:21,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:21,520 INFO L87 Difference]: Start difference. First operand 5757 states and 8269 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:18:24,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:26,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:28,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:29,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:29,130 INFO L93 Difference]: Finished difference Result 16653 states and 23827 transitions. [2023-11-23 21:18:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:29,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2023-11-23 21:18:29,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:29,269 INFO L225 Difference]: With dead ends: 16653 [2023-11-23 21:18:29,269 INFO L226 Difference]: Without dead ends: 10919 [2023-11-23 21:18:29,315 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 [2023-11-23 21:18:29,316 INFO L413 NwaCegarLoop]: 2030 mSDtfsCounter, 2019 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:29,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 4005 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-23 21:18:29,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10919 states. [2023-11-23 21:18:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10919 to 10887. [2023-11-23 21:18:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10887 states, 6336 states have (on average 1.261837121212121) internal successors, (7995), 6502 states have internal predecessors, (7995), 3753 states have call successors, (3753), 804 states have call predecessors, (3753), 795 states have return successors, (3783), 3694 states have call predecessors, (3783), 3749 states have call successors, (3783) [2023-11-23 21:18:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10887 states to 10887 states and 15531 transitions. [2023-11-23 21:18:30,709 INFO L78 Accepts]: Start accepts. Automaton has 10887 states and 15531 transitions. Word has length 135 [2023-11-23 21:18:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:30,710 INFO L495 AbstractCegarLoop]: Abstraction has 10887 states and 15531 transitions. [2023-11-23 21:18:30,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:18:30,712 INFO L276 IsEmpty]: Start isEmpty. Operand 10887 states and 15531 transitions. [2023-11-23 21:18:30,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-23 21:18:30,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:30,720 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2023-11-23 21:18:30,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:18:30,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:18:30,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:30,722 INFO L85 PathProgramCache]: Analyzing trace with hash 559643862, now seen corresponding path program 1 times [2023-11-23 21:18:30,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:30,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633502038] [2023-11-23 21:18:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:30,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2023-11-23 21:18:31,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:31,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633502038] [2023-11-23 21:18:31,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633502038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:31,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:31,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:31,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877707587] [2023-11-23 21:18:31,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:31,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:31,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:31,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:31,448 INFO L87 Difference]: Start difference. First operand 10887 states and 15531 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19)