./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91 --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 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:50:28,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:50:29,093 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:50:29,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:50:29,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:50:29,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:50:29,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:50:29,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:50:29,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:50:29,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:50:29,148 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:50:29,150 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:50:29,150 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:50:29,152 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:50:29,153 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:50:29,153 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:50:29,154 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:50:29,154 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:50:29,155 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:50:29,155 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:50:29,157 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:50:29,158 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:50:29,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:50:29,160 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:50:29,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:50:29,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:50:29,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:50:29,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:50:29,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:50:29,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:50:29,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:50:29,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:50:29,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:50:29,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:50:29,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:29,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:50:29,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:50:29,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:50:29,167 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:50:29,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:50:29,168 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:50:29,168 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:50:29,168 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:50:29,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:50:29,169 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_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a [2023-11-24 23:50:29,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:50:29,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:50:29,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:50:29,546 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:50:29,547 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:50:29,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2023-11-24 23:50:32,814 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:33,480 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:33,481 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2023-11-24 23:50:33,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/data/8c5fd47bf/abbe7a5388334aa1963f3c9726217acd/FLAGd9d63d11f [2023-11-24 23:50:33,573 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/data/8c5fd47bf/abbe7a5388334aa1963f3c9726217acd [2023-11-24 23:50:33,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:33,580 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:33,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:33,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:33,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:33,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8729d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33, skipping insertion in model container [2023-11-24 23:50:33,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,790 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:50:36,752 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_91eacace-d482-41b7-861e-7f4bcb4aa493/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2023-11-24 23:50:36,757 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_91eacace-d482-41b7-861e-7f4bcb4aa493/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2023-11-24 23:50:36,758 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_91eacace-d482-41b7-861e-7f4bcb4aa493/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2023-11-24 23:50:36,758 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_91eacace-d482-41b7-861e-7f4bcb4aa493/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2023-11-24 23:50:36,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:36,841 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:50:36,975 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"); [5245] [2023-11-24 23:50:36,985 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)); [5252] [2023-11-24 23:50:36,985 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5259] [2023-11-24 23:50:36,987 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)); [5309-5310] [2023-11-24 23:50:36,988 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"); [5315-5317] [2023-11-24 23:50:36,998 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)); [5476-5477] [2023-11-24 23:50:37,000 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)); [5510-5511] [2023-11-24 23:50:37,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7257] [2023-11-24 23:50:37,151 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7580] [2023-11-24 23:50:37,278 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_91eacace-d482-41b7-861e-7f4bcb4aa493/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2023-11-24 23:50:37,279 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_91eacace-d482-41b7-861e-7f4bcb4aa493/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2023-11-24 23:50:37,279 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_91eacace-d482-41b7-861e-7f4bcb4aa493/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2023-11-24 23:50:37,280 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_91eacace-d482-41b7-861e-7f4bcb4aa493/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2023-11-24 23:50:37,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:37,534 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:50:37,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37 WrapperNode [2023-11-24 23:50:37,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:37,537 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:37,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:50:37,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:50:37,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:37,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:37,881 INFO L138 Inliner]: procedures = 422, calls = 2027, calls flagged for inlining = 203, calls inlined = 186, statements flattened = 6240 [2023-11-24 23:50:37,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:37,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:50:37,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:50:37,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:50:37,893 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:37,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:37,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:37,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:38,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:38,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:38,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:38,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:38,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:50:38,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:50:38,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:50:38,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:50:38,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:38,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:38,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:50:38,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91eacace-d482-41b7-861e-7f4bcb4aa493/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:50:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-24 23:50:38,460 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-24 23:50:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-24 23:50:38,460 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-24 23:50:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-11-24 23:50:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-11-24 23:50:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_set_filter_mode [2023-11-24 23:50:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_set_filter_mode [2023-11-24 23:50:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-24 23:50:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-24 23:50:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:50:38,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:50:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_resume [2023-11-24 23:50:38,462 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_resume [2023-11-24 23:50:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-24 23:50:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-24 23:50:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-24 23:50:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-24 23:50:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dmfe_board_info [2023-11-24 23:50:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dmfe_board_info [2023-11-24 23:50:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-24 23:50:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-24 23:50:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2023-11-24 23:50:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2023-11-24 23:50:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-11-24 23:50:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-11-24 23:50:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2023-11-24 23:50:38,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2023-11-24 23:50:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-24 23:50:38,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-24 23:50:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-24 23:50:38,465 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-24 23:50:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_reuse_skb [2023-11-24 23:50:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_reuse_skb [2023-11-24 23:50:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2023-11-24 23:50:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2023-11-24 23:50:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-11-24 23:50:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-11-24 23:50:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-24 23:50:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-24 23:50:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-24 23:50:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-24 23:50:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-11-24 23:50:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-11-24 23:50:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-24 23:50:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-24 23:50:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-24 23:50:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-24 23:50:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2023-11-24 23:50:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2023-11-24 23:50:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:50:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure poll_dmfe [2023-11-24 23:50:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_dmfe [2023-11-24 23:50:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-24 23:50:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-24 23:50:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:50:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-24 23:50:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-24 23:50:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2023-11-24 23:50:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2023-11-24 23:50:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:50:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-24 23:50:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-24 23:50:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_remove_one [2023-11-24 23:50:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_remove_one [2023-11-24 23:50:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2023-11-24 23:50:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2023-11-24 23:50:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:50:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure dm9132_id_table [2023-11-24 23:50:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure dm9132_id_table [2023-11-24 23:50:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-24 23:50:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-24 23:50:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-24 23:50:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-24 23:50:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-24 23:50:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-24 23:50:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-24 23:50:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-24 23:50:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_interrupt [2023-11-24 23:50:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_interrupt [2023-11-24 23:50:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-24 23:50:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-24 23:50:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2023-11-24 23:50:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2023-11-24 23:50:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-24 23:50:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-24 23:50:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure cal_CRC [2023-11-24 23:50:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure cal_CRC [2023-11-24 23:50:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:50:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-24 23:50:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-24 23:50:38,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-24 23:50:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-24 23:50:38,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:50:38,475 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2023-11-24 23:50:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2023-11-24 23:50:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-24 23:50:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-24 23:50:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-24 23:50:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-24 23:50:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:50:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2023-11-24 23:50:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2023-11-24 23:50:38,477 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:50:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:50:38,477 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-11-24 23:50:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-11-24 23:50:38,477 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_free_rxbuffer [2023-11-24 23:50:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_free_rxbuffer [2023-11-24 23:50:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-24 23:50:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-24 23:50:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-24 23:50:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-24 23:50:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-24 23:50:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-24 23:50:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-24 23:50:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-24 23:50:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_stop [2023-11-24 23:50:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_stop [2023-11-24 23:50:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:50:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:50:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:50:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:50:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-24 23:50:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-24 23:50:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-24 23:50:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-24 23:50:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-24 23:50:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-24 23:50:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_open [2023-11-24 23:50:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_open [2023-11-24 23:50:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-24 23:50:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-24 23:50:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-24 23:50:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-24 23:50:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2023-11-24 23:50:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2023-11-24 23:50:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-24 23:50:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-24 23:50:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-24 23:50:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-24 23:50:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2023-11-24 23:50:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2023-11-24 23:50:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-24 23:50:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-24 23:50:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:50:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:50:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-24 23:50:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-24 23:50:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2023-11-24 23:50:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2023-11-24 23:50:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:50:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:50:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:50:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_init_dm910x [2023-11-24 23:50:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_init_dm910x [2023-11-24 23:50:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-24 23:50:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-24 23:50:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-24 23:50:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-24 23:50:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2023-11-24 23:50:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2023-11-24 23:50:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-24 23:50:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-24 23:50:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2023-11-24 23:50:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2023-11-24 23:50:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:50:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:50:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:50:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2023-11-24 23:50:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2023-11-24 23:50:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2023-11-24 23:50:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2023-11-24 23:50:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2023-11-24 23:50:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2023-11-24 23:50:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-24 23:50:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-24 23:50:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-11-24 23:50:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-11-24 23:50:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2023-11-24 23:50:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2023-11-24 23:50:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:50:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-24 23:50:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-24 23:50:39,255 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:50:39,260 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:50:39,588 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-24 23:50:44,263 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-24 23:50:44,379 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:50:48,139 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:50:48,139 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:50:48,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:48 BoogieIcfgContainer [2023-11-24 23:50:48,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:50:48,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:50:48,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:50:48,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:50:48,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:50:33" (1/3) ... [2023-11-24 23:50:48,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f490724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:48, skipping insertion in model container [2023-11-24 23:50:48,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37" (2/3) ... [2023-11-24 23:50:48,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f490724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:48, skipping insertion in model container [2023-11-24 23:50:48,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:48" (3/3) ... [2023-11-24 23:50:48,153 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2023-11-24 23:50:48,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:50:48,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-24 23:50:48,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:50:48,276 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;@7693d75e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:50:48,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 23:50:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 1322 states, 776 states have (on average 1.300257731958763) internal successors, (1009), 797 states have internal predecessors, (1009), 460 states have call successors, (460), 84 states have call predecessors, (460), 83 states have return successors, (454), 445 states have call predecessors, (454), 454 states have call successors, (454) [2023-11-24 23:50:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 23:50:48,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:48,328 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] [2023-11-24 23:50:48,329 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)] === [2023-11-24 23:50:48,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1858755376, now seen corresponding path program 1 times [2023-11-24 23:50:48,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:48,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464558402] [2023-11-24 23:50:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:48,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-24 23:50:49,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:49,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464558402] [2023-11-24 23:50:49,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464558402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:49,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:49,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:50:49,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573020187] [2023-11-24 23:50:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:49,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:50:49,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:50:49,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:50:49,302 INFO L87 Difference]: Start difference. First operand has 1322 states, 776 states have (on average 1.300257731958763) internal successors, (1009), 797 states have internal predecessors, (1009), 460 states have call successors, (460), 84 states have call predecessors, (460), 83 states have return successors, (454), 445 states have call predecessors, (454), 454 states have call successors, (454) 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) [2023-11-24 23:50:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:53,331 INFO L93 Difference]: Finished difference Result 3840 states and 5649 transitions. [2023-11-24 23:50:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:50:53,335 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 [2023-11-24 23:50:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:53,392 INFO L225 Difference]: With dead ends: 3840 [2023-11-24 23:50:53,392 INFO L226 Difference]: Without dead ends: 2525 [2023-11-24 23:50:53,412 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 [2023-11-24 23:50:53,418 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1801 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:53,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1801 Valid, 3221 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-24 23:50:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2023-11-24 23:50:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2521. [2023-11-24 23:50:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 1492 states have (on average 1.292225201072386) internal successors, (1928), 1533 states have internal predecessors, (1928), 864 states have call successors, (864), 163 states have call predecessors, (864), 162 states have return successors, (860), 842 states have call predecessors, (860), 860 states have call successors, (860) [2023-11-24 23:50:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3652 transitions. [2023-11-24 23:50:53,814 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3652 transitions. Word has length 101 [2023-11-24 23:50:53,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:53,816 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 3652 transitions. [2023-11-24 23:50:53,816 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) [2023-11-24 23:50:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3652 transitions. [2023-11-24 23:50:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-24 23:50:53,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:53,824 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, 1, 1] [2023-11-24 23:50:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:50:53,825 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)] === [2023-11-24 23:50:53,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -966208395, now seen corresponding path program 1 times [2023-11-24 23:50:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943449189] [2023-11-24 23:50:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-24 23:50:54,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:54,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943449189] [2023-11-24 23:50:54,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943449189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:54,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:54,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:50:54,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037490859] [2023-11-24 23:50:54,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:50:54,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:50:54,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:50:54,284 INFO L87 Difference]: Start difference. First operand 2521 states and 3652 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-24 23:50:56,664 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 [] [2023-11-24 23:50:58,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:50:59,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:51:01,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:01,197 INFO L93 Difference]: Finished difference Result 7471 states and 10832 transitions. [2023-11-24 23:51:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:01,198 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2023-11-24 23:51:01,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:01,252 INFO L225 Difference]: With dead ends: 7471 [2023-11-24 23:51:01,253 INFO L226 Difference]: Without dead ends: 4967 [2023-11-24 23:51:01,271 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 [2023-11-24 23:51:01,273 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 1850 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:01,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1850 Valid, 3204 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 580 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-11-24 23:51:01,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4967 states. [2023-11-24 23:51:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4967 to 4937. [2023-11-24 23:51:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4937 states, 2937 states have (on average 1.2945182158665305) internal successors, (3802), 3023 states have internal predecessors, (3802), 1676 states have call successors, (1676), 324 states have call predecessors, (1676), 321 states have return successors, (1682), 1625 states have call predecessors, (1682), 1672 states have call successors, (1682) [2023-11-24 23:51:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4937 states to 4937 states and 7160 transitions. [2023-11-24 23:51:01,654 INFO L78 Accepts]: Start accepts. Automaton has 4937 states and 7160 transitions. Word has length 107 [2023-11-24 23:51:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:01,655 INFO L495 AbstractCegarLoop]: Abstraction has 4937 states and 7160 transitions. [2023-11-24 23:51:01,655 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-24 23:51:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4937 states and 7160 transitions. [2023-11-24 23:51:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-24 23:51:01,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:01,661 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, 1, 1] [2023-11-24 23:51:01,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:51:01,661 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)] === [2023-11-24 23:51:01,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1993351627, now seen corresponding path program 1 times [2023-11-24 23:51:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:01,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588730723] [2023-11-24 23:51:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:01,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-24 23:51:02,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588730723] [2023-11-24 23:51:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588730723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:02,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:02,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:02,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637805213] [2023-11-24 23:51:02,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:02,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:02,104 INFO L87 Difference]: Start difference. First operand 4937 states and 7160 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-24 23:51:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:06,260 INFO L93 Difference]: Finished difference Result 14043 states and 20328 transitions. [2023-11-24 23:51:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:06,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 107 [2023-11-24 23:51:06,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:06,354 INFO L225 Difference]: With dead ends: 14043 [2023-11-24 23:51:06,355 INFO L226 Difference]: Without dead ends: 9123 [2023-11-24 23:51:06,395 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 [2023-11-24 23:51:06,400 INFO L413 NwaCegarLoop]: 1711 mSDtfsCounter, 1615 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:06,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 3287 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-24 23:51:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9123 states. [2023-11-24 23:51:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9123 to 9089. [2023-11-24 23:51:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9089 states, 5411 states have (on average 1.2958787654777306) internal successors, (7012), 5577 states have internal predecessors, (7012), 3056 states have call successors, (3056), 626 states have call predecessors, (3056), 619 states have return successors, (3078), 2953 states have call predecessors, (3078), 3052 states have call successors, (3078) [2023-11-24 23:51:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9089 states to 9089 states and 13146 transitions. [2023-11-24 23:51:07,203 INFO L78 Accepts]: Start accepts. Automaton has 9089 states and 13146 transitions. Word has length 107 [2023-11-24 23:51:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:07,204 INFO L495 AbstractCegarLoop]: Abstraction has 9089 states and 13146 transitions. [2023-11-24 23:51:07,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-24 23:51:07,206 INFO L276 IsEmpty]: Start isEmpty. Operand 9089 states and 13146 transitions. [2023-11-24 23:51:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-24 23:51:07,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:07,209 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, 1, 1, 1, 1, 1] [2023-11-24 23:51:07,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:51:07,210 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)] === [2023-11-24 23:51:07,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:07,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1258491647, now seen corresponding path program 1 times [2023-11-24 23:51:07,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:07,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500126848] [2023-11-24 23:51:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:07,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-24 23:51:07,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:07,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500126848] [2023-11-24 23:51:07,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500126848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:07,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:07,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123724543] [2023-11-24 23:51:07,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:07,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:07,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:07,515 INFO L87 Difference]: Start difference. First operand 9089 states and 13146 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-24 23:51:10,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:51:12,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:51:13,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:13,912 INFO L93 Difference]: Finished difference Result 17952 states and 25912 transitions. [2023-11-24 23:51:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:13,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2023-11-24 23:51:13,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:14,004 INFO L225 Difference]: With dead ends: 17952 [2023-11-24 23:51:14,005 INFO L226 Difference]: Without dead ends: 8880 [2023-11-24 23:51:14,175 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 [2023-11-24 23:51:14,176 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 1329 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:14,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 3449 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 666 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-11-24 23:51:14,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2023-11-24 23:51:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 8848. [2023-11-24 23:51:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8848 states, 5403 states have (on average 1.3009439200444197) internal successors, (7029), 5572 states have internal predecessors, (7029), 2811 states have call successors, (2811), 639 states have call predecessors, (2811), 631 states have return successors, (2820), 2703 states have call predecessors, (2820), 2807 states have call successors, (2820) [2023-11-24 23:51:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 12660 transitions. [2023-11-24 23:51:14,855 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 12660 transitions. Word has length 110 [2023-11-24 23:51:14,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:14,856 INFO L495 AbstractCegarLoop]: Abstraction has 8848 states and 12660 transitions. [2023-11-24 23:51:14,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-24 23:51:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 12660 transitions. [2023-11-24 23:51:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-24 23:51:14,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:14,862 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:14,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:51:14,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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)] === [2023-11-24 23:51:14,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 491338332, now seen corresponding path program 1 times [2023-11-24 23:51:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:14,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437909371] [2023-11-24 23:51:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:14,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-24 23:51:15,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:15,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437909371] [2023-11-24 23:51:15,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437909371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:15,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:15,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:15,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537498841] [2023-11-24 23:51:15,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:15,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:15,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:15,095 INFO L87 Difference]: Start difference. First operand 8848 states and 12660 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)