./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-8390-axnet_cs.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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/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-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/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 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:49,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:49,593 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:32:49,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:49,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:49,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:49,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:49,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:49,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:49,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:49,628 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:49,628 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:49,629 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:49,629 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:49,630 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:49,630 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:49,631 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:49,631 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:49,631 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:49,632 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:49,632 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:49,633 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:49,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:49,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:49,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:49,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:49,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:49,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:49,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:49,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:49,637 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:49,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:49,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:49,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:49,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:49,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:49,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:49,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:49,639 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:49,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:49,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:49,640 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:49,640 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:49,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:49,641 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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2023-11-23 20:32:49,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:49,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:49,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:49,990 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:49,991 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:49,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2023-11-23 20:32:53,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:53,942 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:53,943 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2023-11-23 20:32:54,005 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire/data/bc31b70a3/4076648878aa44caabdc5939fa062532/FLAG04e3de705 [2023-11-23 20:32:54,026 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire/data/bc31b70a3/4076648878aa44caabdc5939fa062532 [2023-11-23 20:32:54,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:54,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:54,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:54,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:54,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:54,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:54" (1/1) ... [2023-11-23 20:32:54,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc8790c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:54, skipping insertion in model container [2023-11-23 20:32:54,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:54" (1/1) ... [2023-11-23 20:32:54,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:57,003 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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2023-11-23 20:32:57,007 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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2023-11-23 20:32:57,008 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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2023-11-23 20:32:57,008 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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2023-11-23 20:32:57,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:57,109 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:57,331 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5461] [2023-11-23 20:32:57,333 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)); [5468] [2023-11-23 20:32:57,333 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5475] [2023-11-23 20:32:57,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5569] [2023-11-23 20:32:57,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5577] [2023-11-23 20:32:57,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [5608] [2023-11-23 20:32:57,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsw": "+S" (addr), "+c" (count): "d" (port)); [5615] [2023-11-23 20:32:57,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insw": "+D" (addr), "+c" (count): "d" (port)); [5622] [2023-11-23 20:32:57,583 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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2023-11-23 20:32:57,584 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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2023-11-23 20:32:57,584 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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2023-11-23 20:32:57,585 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_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2023-11-23 20:32:57,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:57,851 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:57,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57 WrapperNode [2023-11-23 20:32:57,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:57,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:57,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:57,854 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:57,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,272 INFO L138 Inliner]: procedures = 370, calls = 2290, calls flagged for inlining = 174, calls inlined = 154, statements flattened = 4586 [2023-11-23 20:32:58,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:58,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:58,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:58,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:58,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:58,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:58,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:58,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:58,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (1/1) ... [2023-11-23 20:32:58,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:58,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:58,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:58,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e65a2f96-73b6-4ba1-9d2a-9242b48f450f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_page_lock_of_ei_device [2023-11-23 20:32:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_page_lock_of_ei_device [2023-11-23 20:32:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:32:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:32:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_detach [2023-11-23 20:32:58,635 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_detach [2023-11-23 20:32:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:32:58,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:32:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 20:32:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 20:32:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 20:32:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 20:32:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure AX88190_init [2023-11-23 20:32:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure AX88190_init [2023-11-23 20:32:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-23 20:32:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-23 20:32:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:32:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:32:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2023-11-23 20:32:58,641 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2023-11-23 20:32:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-23 20:32:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-23 20:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2023-11-23 20:32:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2023-11-23 20:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 20:32:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 20:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ei_receive [2023-11-23 20:32:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_receive [2023-11-23 20:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:32:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2023-11-23 20:32:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2023-11-23 20:32:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 20:32:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 20:32:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_release [2023-11-23 20:32:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_release [2023-11-23 20:32:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-23 20:32:58,645 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-23 20:32:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_write_config_byte [2023-11-23 20:32:58,645 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_write_config_byte [2023-11-23 20:32:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2023-11-23 20:32:58,645 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2023-11-23 20:32:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-23 20:32:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-23 20:32:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2023-11-23 20:32:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2023-11-23 20:32:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-23 20:32:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-23 20:32:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:32:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-23 20:32:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-23 20:32:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:32:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 20:32:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 20:32:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-23 20:32:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-23 20:32:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2023-11-23 20:32:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2023-11-23 20:32:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 20:32:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 20:32:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure NS8390_trigger_send [2023-11-23 20:32:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure NS8390_trigger_send [2023-11-23 20:32:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure ei_tx_intr [2023-11-23 20:32:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_tx_intr [2023-11-23 20:32:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:32:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:32:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:32:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:32:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-23 20:32:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-23 20:32:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 20:32:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 20:32:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 20:32:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 20:32:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 20:32:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 20:32:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-23 20:32:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-23 20:32:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 20:32:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 20:32:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:32:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2023-11-23 20:32:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2023-11-23 20:32:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:32:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 20:32:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 20:32:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:32:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 20:32:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 20:32:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure ei_irq_wrapper [2023-11-23 20:32:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_irq_wrapper [2023-11-23 20:32:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-23 20:32:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-23 20:32:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 20:32:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 20:32:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-23 20:32:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-23 20:32:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:32:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 20:32:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 20:32:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:32:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:32:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_reset_8390 [2023-11-23 20:32:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_reset_8390 [2023-11-23 20:32:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_tx_timeout [2023-11-23 20:32:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_tx_timeout [2023-11-23 20:32:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 20:32:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 20:32:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:32:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2023-11-23 20:32:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2023-11-23 20:32:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-23 20:32:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-23 20:32:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_cs_driver_exit [2023-11-23 20:32:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_cs_driver_exit [2023-11-23 20:32:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 20:32:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 20:32:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 20:32:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 20:32:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:32:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:32:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:32:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 20:32:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 20:32:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 20:32:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 20:32:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2023-11-23 20:32:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2023-11-23 20:32:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-23 20:32:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-23 20:32:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure do_set_multicast_list [2023-11-23 20:32:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure do_set_multicast_list [2023-11-23 20:32:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:32:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 20:32:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 20:32:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-11-23 20:32:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-11-23 20:32:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:59,336 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:59,340 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:59,670 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:33:05,806 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 20:33:05,962 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:07,622 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:07,622 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:33:07,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:07 BoogieIcfgContainer [2023-11-23 20:33:07,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:07,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:07,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:07,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:07,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:54" (1/3) ... [2023-11-23 20:33:07,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788abfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:07, skipping insertion in model container [2023-11-23 20:33:07,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:57" (2/3) ... [2023-11-23 20:33:07,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788abfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:07, skipping insertion in model container [2023-11-23 20:33:07,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:07" (3/3) ... [2023-11-23 20:33:07,640 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2023-11-23 20:33:07,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:07,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 20:33:07,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:07,795 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;@2b6af6e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:07,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 20:33:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 1070 states, 607 states have (on average 1.3031301482701811) internal successors, (791), 631 states have internal predecessors, (791), 400 states have call successors, (400), 62 states have call predecessors, (400), 61 states have return successors, (394), 386 states have call predecessors, (394), 394 states have call successors, (394) [2023-11-23 20:33:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-23 20:33:07,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:07,833 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:07,834 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 20:33:07,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1015143908, now seen corresponding path program 1 times [2023-11-23 20:33:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222873570] [2023-11-23 20:33:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:07,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-23 20:33:09,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:09,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222873570] [2023-11-23 20:33:09,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222873570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:09,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:09,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:09,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739873171] [2023-11-23 20:33:09,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:09,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:09,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:09,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:09,331 INFO L87 Difference]: Start difference. First operand has 1070 states, 607 states have (on average 1.3031301482701811) internal successors, (791), 631 states have internal predecessors, (791), 400 states have call successors, (400), 62 states have call predecessors, (400), 61 states have return successors, (394), 386 states have call predecessors, (394), 394 states have call successors, (394) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 20:33:12,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:14,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:16,065 INFO L93 Difference]: Finished difference Result 3100 states and 4667 transitions. [2023-11-23 20:33:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:16,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-11-23 20:33:16,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:16,121 INFO L225 Difference]: With dead ends: 3100 [2023-11-23 20:33:16,122 INFO L226 Difference]: Without dead ends: 2035 [2023-11-23 20:33:16,138 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 20:33:16,143 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 1468 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:16,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2722 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2023-11-23 20:33:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2023-11-23 20:33:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2031. [2023-11-23 20:33:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 1163 states have (on average 1.294926913155632) internal successors, (1506), 1208 states have internal predecessors, (1506), 747 states have call successors, (747), 119 states have call predecessors, (747), 118 states have return successors, (743), 727 states have call predecessors, (743), 743 states have call successors, (743) [2023-11-23 20:33:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2996 transitions. [2023-11-23 20:33:16,572 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2996 transitions. Word has length 91 [2023-11-23 20:33:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:16,574 INFO L495 AbstractCegarLoop]: Abstraction has 2031 states and 2996 transitions. [2023-11-23 20:33:16,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 20:33:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2996 transitions. [2023-11-23 20:33:16,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 20:33:16,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:16,592 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:16,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:33:16,592 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 20:33:16,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1365890016, now seen corresponding path program 1 times [2023-11-23 20:33:16,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:16,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674658552] [2023-11-23 20:33:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:16,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-23 20:33:17,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:17,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674658552] [2023-11-23 20:33:17,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674658552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:17,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:17,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381271394] [2023-11-23 20:33:17,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:17,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:17,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:17,288 INFO L87 Difference]: Start difference. First operand 2031 states and 2996 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 20:33:20,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:20,662 INFO L93 Difference]: Finished difference Result 5731 states and 8418 transitions. [2023-11-23 20:33:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2023-11-23 20:33:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:20,706 INFO L225 Difference]: With dead ends: 5731 [2023-11-23 20:33:20,706 INFO L226 Difference]: Without dead ends: 3715 [2023-11-23 20:33:20,721 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 20:33:20,722 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 1261 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:20,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2756 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 20:33:20,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2023-11-23 20:33:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3684. [2023-11-23 20:33:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 2108 states have (on average 1.2851043643263758) internal successors, (2709), 2190 states have internal predecessors, (2709), 1342 states have call successors, (1342), 230 states have call predecessors, (1342), 231 states have return successors, (1344), 1309 states have call predecessors, (1344), 1338 states have call successors, (1344) [2023-11-23 20:33:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 5395 transitions. [2023-11-23 20:33:21,087 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 5395 transitions. Word has length 99 [2023-11-23 20:33:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:21,089 INFO L495 AbstractCegarLoop]: Abstraction has 3684 states and 5395 transitions. [2023-11-23 20:33:21,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 20:33:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 5395 transitions. [2023-11-23 20:33:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 20:33:21,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:21,095 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2023-11-23 20:33:21,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:33:21,096 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 20:33:21,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1701766531, now seen corresponding path program 1 times [2023-11-23 20:33:21,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:21,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835180907] [2023-11-23 20:33:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:21,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-23 20:33:21,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:21,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835180907] [2023-11-23 20:33:21,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835180907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:21,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:21,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:21,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321203464] [2023-11-23 20:33:21,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:21,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:21,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:21,880 INFO L87 Difference]: Start difference. First operand 3684 states and 5395 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 20:33:24,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:25,939 INFO L93 Difference]: Finished difference Result 10072 states and 14685 transitions. [2023-11-23 20:33:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:25,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2023-11-23 20:33:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:26,007 INFO L225 Difference]: With dead ends: 10072 [2023-11-23 20:33:26,007 INFO L226 Difference]: Without dead ends: 6403 [2023-11-23 20:33:26,031 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 20:33:26,033 INFO L413 NwaCegarLoop]: 1376 mSDtfsCounter, 1213 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:26,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 2708 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-23 20:33:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2023-11-23 20:33:26,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 6370. [2023-11-23 20:33:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6370 states, 3644 states have (on average 1.280735455543359) internal successors, (4667), 3782 states have internal predecessors, (4667), 2292 states have call successors, (2292), 434 states have call predecessors, (2292), 431 states have return successors, (2300), 2219 states have call predecessors, (2300), 2288 states have call successors, (2300) [2023-11-23 20:33:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6370 states to 6370 states and 9259 transitions. [2023-11-23 20:33:26,606 INFO L78 Accepts]: Start accepts. Automaton has 6370 states and 9259 transitions. Word has length 103 [2023-11-23 20:33:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:26,607 INFO L495 AbstractCegarLoop]: Abstraction has 6370 states and 9259 transitions. [2023-11-23 20:33:26,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 20:33:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 6370 states and 9259 transitions. [2023-11-23 20:33:26,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 20:33:26,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:26,611 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:26,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:33:26,611 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 20:33:26,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:26,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1789860430, now seen corresponding path program 1 times [2023-11-23 20:33:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:26,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26271264] [2023-11-23 20:33:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:26,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-23 20:33:27,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26271264] [2023-11-23 20:33:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26271264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:27,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544645762] [2023-11-23 20:33:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:27,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:27,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:27,232 INFO L87 Difference]: Start difference. First operand 6370 states and 9259 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:33:30,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:30,704 INFO L93 Difference]: Finished difference Result 11245 states and 16319 transitions. [2023-11-23 20:33:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 122 [2023-11-23 20:33:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:30,758 INFO L225 Difference]: With dead ends: 11245 [2023-11-23 20:33:30,759 INFO L226 Difference]: Without dead ends: 4890 [2023-11-23 20:33:30,797 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 20:33:30,802 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 1386 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:30,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 2482 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 20:33:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4890 states. [2023-11-23 20:33:31,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4890 to 4851. [2023-11-23 20:33:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 2818 states have (on average 1.2732434350603266) internal successors, (3588), 2962 states have internal predecessors, (3588), 1675 states have call successors, (1675), 394 states have call predecessors, (1675), 355 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-11-23 20:33:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6970 transitions. [2023-11-23 20:33:31,417 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6970 transitions. Word has length 122 [2023-11-23 20:33:31,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:31,418 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6970 transitions. [2023-11-23 20:33:31,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:33:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6970 transitions. [2023-11-23 20:33:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 20:33:31,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:31,423 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2023-11-23 20:33:31,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:33:31,424 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 20:33:31,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1598379610, now seen corresponding path program 1 times [2023-11-23 20:33:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:31,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578959136] [2023-11-23 20:33:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:31,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-23 20:33:32,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578959136] [2023-11-23 20:33:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578959136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:32,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:33:32,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690520096] [2023-11-23 20:33:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:32,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:33:32,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:32,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:33:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:33:32,358 INFO L87 Difference]: Start difference. First operand 4851 states and 6970 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 20:33:36,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:36,663 INFO L93 Difference]: Finished difference Result 4857 states and 6975 transitions. [2023-11-23 20:33:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:33:36,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2023-11-23 20:33:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:36,707 INFO L225 Difference]: With dead ends: 4857 [2023-11-23 20:33:36,707 INFO L226 Difference]: Without dead ends: 4855 [2023-11-23 20:33:36,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:33:36,711 INFO L413 NwaCegarLoop]: 1352 mSDtfsCounter, 1511 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:36,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 4042 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-23 20:33:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2023-11-23 20:33:37,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4855. [2023-11-23 20:33:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 2821 states have (on average 1.2729528535980148) internal successors, (3591), 2965 states have internal predecessors, (3591), 1675 states have call successors, (1675), 395 states have call predecessors, (1675), 356 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-11-23 20:33:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 6973 transitions. [2023-11-23 20:33:37,167 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 6973 transitions. Word has length 133 [2023-11-23 20:33:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:37,169 INFO L495 AbstractCegarLoop]: Abstraction has 4855 states and 6973 transitions. [2023-11-23 20:33:37,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 20:33:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 6973 transitions. [2023-11-23 20:33:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 20:33:37,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:37,177 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2023-11-23 20:33:37,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:33:37,178 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 20:33:37,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:37,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1754514214, now seen corresponding path program 1 times [2023-11-23 20:33:37,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:37,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069668187] [2023-11-23 20:33:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:37,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-23 20:33:38,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:38,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069668187] [2023-11-23 20:33:38,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069668187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:38,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:38,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:33:38,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115797796] [2023-11-23 20:33:38,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:38,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:33:38,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:38,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:33:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:33:38,030 INFO L87 Difference]: Start difference. First operand 4855 states and 6973 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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)