./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-ethernet-icplus-ipg.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/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-ethernet-icplus-ipg.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/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 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:42,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:42,948 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:30:42,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:42,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:42,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:42,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:42,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:42,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:42,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:42,985 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:42,986 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:42,987 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:42,987 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:30:42,988 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:42,988 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:42,989 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:30:42,990 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:30:42,990 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:42,991 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:30:42,991 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:30:42,992 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:30:42,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:42,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:30:42,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:30:42,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:42,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:30:42,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:42,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:30:42,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:30:42,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:42,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:42,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:42,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:42,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:42,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:42,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:42,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:30:42,999 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:30:43,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:30:43,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:43,001 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:30:43,001 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:43,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:43,002 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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de [2023-11-23 21:30:43,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:30:43,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:30:43,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:30:43,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:30:43,332 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:30:43,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2023-11-23 21:30:46,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:30:47,196 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:30:47,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2023-11-23 21:30:47,252 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire/data/27269b3bb/8c144113de42478cbb7286282670f0cc/FLAGef4fd8bfa [2023-11-23 21:30:47,266 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire/data/27269b3bb/8c144113de42478cbb7286282670f0cc [2023-11-23 21:30:47,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:30:47,270 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:30:47,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:47,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:30:47,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:30:47,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:47" (1/1) ... [2023-11-23 21:30:47,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba2f525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:47, skipping insertion in model container [2023-11-23 21:30:47,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:47" (1/1) ... [2023-11-23 21:30:47,462 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:50,405 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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315136,315149] [2023-11-23 21:30:50,412 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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315305,315318] [2023-11-23 21:30:50,412 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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315472,315485] [2023-11-23 21:30:50,413 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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315640,315653] [2023-11-23 21:30:50,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:50,510 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:30:50,658 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"); [5252] [2023-11-23 21:30:50,660 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)); [5259] [2023-11-23 21:30:50,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5266] [2023-11-23 21:30:50,664 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)); [5302-5303] [2023-11-23 21:30:50,665 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"); [5308-5310] [2023-11-23 21:30:50,679 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)); [5526-5527] [2023-11-23 21:30:50,683 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [5560-5561] [2023-11-23 21:30:50,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7910] [2023-11-23 21:30:50,914 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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315136,315149] [2023-11-23 21:30:50,915 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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315305,315318] [2023-11-23 21:30:50,916 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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315472,315485] [2023-11-23 21:30:50,917 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_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315640,315653] [2023-11-23 21:30:51,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:51,238 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:30:51,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51 WrapperNode [2023-11-23 21:30:51,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:51,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:51,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:30:51,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:30:51,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,608 INFO L138 Inliner]: procedures = 430, calls = 1731, calls flagged for inlining = 202, calls inlined = 186, statements flattened = 4773 [2023-11-23 21:30:51,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:51,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:30:51,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:30:51,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:30:51,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:30:51,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:30:51,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:30:51,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:30:51,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (1/1) ... [2023-11-23 21:30:51,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:51,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:52,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:30:52,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7b0f11-9e5b-4db2-a4a5-eca6b63ce285/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:30:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2023-11-23 21:30:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2023-11-23 21:30:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-23 21:30:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-23 21:30:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:30:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:30:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:30:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:30:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:30:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:30:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:30:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:30:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2023-11-23 21:30:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2023-11-23 21:30:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:30:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:30:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 21:30:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 21:30:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-11-23 21:30:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-11-23 21:30:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2023-11-23 21:30:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2023-11-23 21:30:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2023-11-23 21:30:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2023-11-23 21:30:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-23 21:30:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-23 21:30:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-23 21:30:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-23 21:30:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2023-11-23 21:30:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2023-11-23 21:30:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2023-11-23 21:30:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2023-11-23 21:30:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:30:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:30:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-11-23 21:30:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-11-23 21:30:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-23 21:30:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-23 21:30:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-23 21:30:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-23 21:30:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:30:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:30:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-23 21:30:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-23 21:30:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:30:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2023-11-23 21:30:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2023-11-23 21:30:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_remove [2023-11-23 21:30:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_remove [2023-11-23 21:30:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:30:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:30:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-23 21:30:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-23 21:30:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:30:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:30:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:30:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2023-11-23 21:30:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2023-11-23 21:30:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:30:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:30:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:30:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:30:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:30:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:30:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:30:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:30:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-23 21:30:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-23 21:30:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:30:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:30:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-23 21:30:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-23 21:30:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-11-23 21:30:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-11-23 21:30:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 21:30:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 21:30:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 21:30:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 21:30:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2023-11-23 21:30:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2023-11-23 21:30:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:30:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:30:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2023-11-23 21:30:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2023-11-23 21:30:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:30:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-23 21:30:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-23 21:30:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:30:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:30:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:30:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:30:52,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:30:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:30:52,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:30:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:30:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2023-11-23 21:30:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2023-11-23 21:30:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:30:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:30:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2023-11-23 21:30:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2023-11-23 21:30:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:30:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:30:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-11-23 21:30:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-11-23 21:30:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:30:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:30:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-23 21:30:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-23 21:30:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:30:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:30:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2023-11-23 21:30:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2023-11-23 21:30:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2023-11-23 21:30:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2023-11-23 21:30:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-11-23 21:30:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-11-23 21:30:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:30:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:30:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2023-11-23 21:30:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2023-11-23 21:30:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-11-23 21:30:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-11-23 21:30:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:30:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:30:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2023-11-23 21:30:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2023-11-23 21:30:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:30:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:30:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:30:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:30:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2023-11-23 21:30:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2023-11-23 21:30:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:30:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:30:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-23 21:30:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-23 21:30:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:30:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:30:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-23 21:30:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-23 21:30:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:30:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:30:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2023-11-23 21:30:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2023-11-23 21:30:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2023-11-23 21:30:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2023-11-23 21:30:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:30:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-23 21:30:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-23 21:30:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:30:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_ipg_nic_private [2023-11-23 21:30:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_ipg_nic_private [2023-11-23 21:30:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2023-11-23 21:30:52,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2023-11-23 21:30:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2023-11-23 21:30:52,092 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2023-11-23 21:30:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:30:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:30:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:30:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-23 21:30:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-23 21:30:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:30:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:30:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:30:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:30:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:30:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:30:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 21:30:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 21:30:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-23 21:30:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-23 21:30:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2023-11-23 21:30:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2023-11-23 21:30:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2023-11-23 21:30:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2023-11-23 21:30:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-11-23 21:30:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-11-23 21:30:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:30:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:30:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:30:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:30:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:30:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:30:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:30:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2023-11-23 21:30:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2023-11-23 21:30:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:30:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:30:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nway_reset [2023-11-23 21:30:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nway_reset [2023-11-23 21:30:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2023-11-23 21:30:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2023-11-23 21:30:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2023-11-23 21:30:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2023-11-23 21:30:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2023-11-23 21:30:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2023-11-23 21:30:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_ipg_nic_private [2023-11-23 21:30:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_ipg_nic_private [2023-11-23 21:30:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:30:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:30:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2023-11-23 21:30:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2023-11-23 21:30:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-11-23 21:30:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-11-23 21:30:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2023-11-23 21:30:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2023-11-23 21:30:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-11-23 21:30:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:30:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2023-11-23 21:30:52,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2023-11-23 21:30:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:30:52,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:30:52,916 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:30:52,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:30:53,957 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:30:58,703 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:30:58,818 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:01,462 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:01,462 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:31:01,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:01 BoogieIcfgContainer [2023-11-23 21:31:01,464 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:01,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:01,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:01,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:01,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:30:47" (1/3) ... [2023-11-23 21:31:01,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12baea49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:01, skipping insertion in model container [2023-11-23 21:31:01,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:51" (2/3) ... [2023-11-23 21:31:01,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12baea49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:01, skipping insertion in model container [2023-11-23 21:31:01,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:01" (3/3) ... [2023-11-23 21:31:01,473 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2023-11-23 21:31:01,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:01,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 21:31:01,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:01,607 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;@297cfeaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:01,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 21:31:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 1355 states, 784 states have (on average 1.2704081632653061) internal successors, (996), 814 states have internal predecessors, (996), 473 states have call successors, (473), 98 states have call predecessors, (473), 97 states have return successors, (467), 464 states have call predecessors, (467), 467 states have call successors, (467) [2023-11-23 21:31:01,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 21:31:01,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:01,657 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:01,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === 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 21:31:01,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1506012229, now seen corresponding path program 1 times [2023-11-23 21:31:01,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:01,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585450669] [2023-11-23 21:31:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:01,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 21:31:02,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:02,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585450669] [2023-11-23 21:31:02,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585450669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:02,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:02,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:31:02,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450959696] [2023-11-23 21:31:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:02,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:02,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:02,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:02,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:02,643 INFO L87 Difference]: Start difference. First operand has 1355 states, 784 states have (on average 1.2704081632653061) internal successors, (996), 814 states have internal predecessors, (996), 473 states have call successors, (473), 98 states have call predecessors, (473), 97 states have return successors, (467), 464 states have call predecessors, (467), 467 states have call successors, (467) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 21:31:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:06,368 INFO L93 Difference]: Finished difference Result 3945 states and 5694 transitions. [2023-11-23 21:31:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:06,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2023-11-23 21:31:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:06,407 INFO L225 Difference]: With dead ends: 3945 [2023-11-23 21:31:06,408 INFO L226 Difference]: Without dead ends: 2597 [2023-11-23 21:31:06,422 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 21:31:06,425 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 1810 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:06,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 3262 Invalid, 573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 21:31:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2023-11-23 21:31:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2593. [2023-11-23 21:31:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 1510 states have (on average 1.2629139072847682) internal successors, (1907), 1567 states have internal predecessors, (1907), 890 states have call successors, (890), 191 states have call predecessors, (890), 190 states have return successors, (886), 880 states have call predecessors, (886), 886 states have call successors, (886) [2023-11-23 21:31:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3683 transitions. [2023-11-23 21:31:06,720 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3683 transitions. Word has length 101 [2023-11-23 21:31:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:06,722 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 3683 transitions. [2023-11-23 21:31:06,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 21:31:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3683 transitions. [2023-11-23 21:31:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 21:31:06,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:06,733 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:06,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:31:06,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 21:31:06,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1767329677, now seen corresponding path program 1 times [2023-11-23 21:31:06,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:06,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903760533] [2023-11-23 21:31:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 21:31:07,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903760533] [2023-11-23 21:31:07,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903760533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:07,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:07,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:31:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557862985] [2023-11-23 21:31:07,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:07,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:07,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:07,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:07,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:07,148 INFO L87 Difference]: Start difference. First operand 2593 states and 3683 transitions. 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:31:10,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:31:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:11,370 INFO L93 Difference]: Finished difference Result 7137 states and 10119 transitions. [2023-11-23 21:31:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:11,371 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-11-23 21:31:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:11,421 INFO L225 Difference]: With dead ends: 7137 [2023-11-23 21:31:11,421 INFO L226 Difference]: Without dead ends: 4561 [2023-11-23 21:31:11,438 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 21:31:11,440 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 1451 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:11,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 3298 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 21:31:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2023-11-23 21:31:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 4532. [2023-11-23 21:31:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 2613 states have (on average 1.2537313432835822) internal successors, (3276), 2717 states have internal predecessors, (3276), 1563 states have call successors, (1563), 360 states have call predecessors, (1563), 353 states have return successors, (1579), 1530 states have call predecessors, (1579), 1559 states have call successors, (1579) [2023-11-23 21:31:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 6418 transitions. [2023-11-23 21:31:11,877 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 6418 transitions. Word has length 105 [2023-11-23 21:31:11,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:11,878 INFO L495 AbstractCegarLoop]: Abstraction has 4532 states and 6418 transitions. [2023-11-23 21:31:11,879 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:31:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 6418 transitions. [2023-11-23 21:31:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-23 21:31:11,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:11,892 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2023-11-23 21:31:11,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:31:11,892 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 21:31:11,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash 251481570, now seen corresponding path program 1 times [2023-11-23 21:31:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:11,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527502737] [2023-11-23 21:31:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-23 21:31:12,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527502737] [2023-11-23 21:31:12,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527502737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:12,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:12,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:31:12,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370273669] [2023-11-23 21:31:12,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:12,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:12,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:12,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:12,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:12,332 INFO L87 Difference]: Start difference. First operand 4532 states and 6418 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 21:31:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:16,311 INFO L93 Difference]: Finished difference Result 9964 states and 14073 transitions. [2023-11-23 21:31:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:16,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 143 [2023-11-23 21:31:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:16,365 INFO L225 Difference]: With dead ends: 9964 [2023-11-23 21:31:16,366 INFO L226 Difference]: Without dead ends: 5449 [2023-11-23 21:31:16,393 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 21:31:16,398 INFO L413 NwaCegarLoop]: 2301 mSDtfsCounter, 1351 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:16,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 3884 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-23 21:31:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2023-11-23 21:31:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5422. [2023-11-23 21:31:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5422 states, 3161 states have (on average 1.244226510597912) internal successors, (3933), 3277 states have internal predecessors, (3933), 1822 states have call successors, (1822), 444 states have call predecessors, (1822), 436 states have return successors, (1830), 1786 states have call predecessors, (1830), 1818 states have call successors, (1830) [2023-11-23 21:31:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 7585 transitions. [2023-11-23 21:31:16,781 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 7585 transitions. Word has length 143 [2023-11-23 21:31:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:16,784 INFO L495 AbstractCegarLoop]: Abstraction has 5422 states and 7585 transitions. [2023-11-23 21:31:16,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 21:31:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 7585 transitions. [2023-11-23 21:31:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 21:31:16,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:16,788 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2023-11-23 21:31:16,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:31:16,789 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 21:31:16,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash 569212510, now seen corresponding path program 1 times [2023-11-23 21:31:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:16,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87173687] [2023-11-23 21:31:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:16,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-23 21:31:17,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:17,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87173687] [2023-11-23 21:31:17,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87173687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:17,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:17,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:31:17,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835627974] [2023-11-23 21:31:17,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:17,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:17,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:17,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:17,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:17,122 INFO L87 Difference]: Start difference. First operand 5422 states and 7585 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 21:31:19,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:19,781 INFO L93 Difference]: Finished difference Result 12238 states and 17129 transitions. [2023-11-23 21:31:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:19,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 138 [2023-11-23 21:31:19,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:19,838 INFO L225 Difference]: With dead ends: 12238 [2023-11-23 21:31:19,838 INFO L226 Difference]: Without dead ends: 6833 [2023-11-23 21:31:19,864 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 21:31:19,865 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1723 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:19,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 3212 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 21:31:19,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6833 states. [2023-11-23 21:31:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6833 to 6805. [2023-11-23 21:31:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6805 states, 3967 states have (on average 1.242500630199143) internal successors, (4929), 4125 states have internal predecessors, (4929), 2281 states have call successors, (2281), 567 states have call predecessors, (2281), 554 states have return successors, (2298), 2215 states have call predecessors, (2298), 2277 states have call successors, (2298) [2023-11-23 21:31:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6805 states to 6805 states and 9508 transitions. [2023-11-23 21:31:20,295 INFO L78 Accepts]: Start accepts. Automaton has 6805 states and 9508 transitions. Word has length 138 [2023-11-23 21:31:20,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:20,296 INFO L495 AbstractCegarLoop]: Abstraction has 6805 states and 9508 transitions. [2023-11-23 21:31:20,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 21:31:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 6805 states and 9508 transitions. [2023-11-23 21:31:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-23 21:31:20,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:20,300 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 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] [2023-11-23 21:31:20,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:31:20,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 21:31:20,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1387050474, now seen corresponding path program 1 times [2023-11-23 21:31:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772760455] [2023-11-23 21:31:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:20,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-23 21:31:20,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772760455] [2023-11-23 21:31:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772760455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:20,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:20,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:31:20,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972958649] [2023-11-23 21:31:20,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:20,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:31:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:31:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:31:20,830 INFO L87 Difference]: Start difference. First operand 6805 states and 9508 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 21:31:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:25,825 INFO L93 Difference]: Finished difference Result 6811 states and 9513 transitions. [2023-11-23 21:31:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:31:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2023-11-23 21:31:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:25,882 INFO L225 Difference]: With dead ends: 6811 [2023-11-23 21:31:25,882 INFO L226 Difference]: Without dead ends: 6809 [2023-11-23 21:31:25,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:31:25,888 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 1854 mSDsluCounter, 3230 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 4852 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:25,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 4852 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-23 21:31:25,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6809 states. [2023-11-23 21:31:26,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6809 to 6809. [2023-11-23 21:31:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6809 states, 3970 states have (on average 1.2423173803526448) internal successors, (4932), 4128 states have internal predecessors, (4932), 2281 states have call successors, (2281), 568 states have call predecessors, (2281), 555 states have return successors, (2298), 2215 states have call predecessors, (2298), 2277 states have call successors, (2298) [2023-11-23 21:31:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6809 states to 6809 states and 9511 transitions. [2023-11-23 21:31:26,341 INFO L78 Accepts]: Start accepts. Automaton has 6809 states and 9511 transitions. Word has length 143 [2023-11-23 21:31:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:26,342 INFO L495 AbstractCegarLoop]: Abstraction has 6809 states and 9511 transitions. [2023-11-23 21:31:26,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 21:31:26,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6809 states and 9511 transitions. [2023-11-23 21:31:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 21:31:26,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:26,346 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 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] [2023-11-23 21:31:26,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:31:26,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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 21:31:26,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash 169240267, now seen corresponding path program 1 times [2023-11-23 21:31:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:26,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224503274] [2023-11-23 21:31:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:26,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-23 21:31:26,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:26,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224503274] [2023-11-23 21:31:26,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224503274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:26,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:26,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:31:26,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526542166] [2023-11-23 21:31:26,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:26,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:31:26,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:26,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:31:26,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:31:26,843 INFO L87 Difference]: Start difference. First operand 6809 states and 9511 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)