./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-dnet.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/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_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/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_1d7fd242-2e31-486f-b745-c80066a9304f/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 fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:55:29,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:29,223 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:55:29,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:29,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:29,287 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:29,288 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:29,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:29,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:29,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:29,297 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:29,299 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:29,299 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:29,302 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:55:29,302 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:29,303 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:29,303 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:55:29,304 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:55:29,304 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:29,307 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:55:29,307 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:55:29,308 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:55:29,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:29,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:29,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:55:29,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:29,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:29,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:29,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:29,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:29,315 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:29,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:29,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:29,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:29,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:29,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:29,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:29,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:29,318 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:55:29,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:55:29,319 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:29,319 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:29,320 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:29,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:29,321 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_1d7fd242-2e31-486f-b745-c80066a9304f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 [2023-11-24 23:55:29,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:29,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:29,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:29,716 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:29,716 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:29,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2023-11-24 23:55:32,908 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:33,525 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:33,525 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2023-11-24 23:55:33,575 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/data/8249f9eab/9df4dc8878fc422a928dc517b670d7e5/FLAGd81670217 [2023-11-24 23:55:33,591 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/data/8249f9eab/9df4dc8878fc422a928dc517b670d7e5 [2023-11-24 23:55:33,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:33,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:33,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:33,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:33,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:33,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:33" (1/1) ... [2023-11-24 23:55:33,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1484de0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:33, skipping insertion in model container [2023-11-24 23:55:33,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:33" (1/1) ... [2023-11-24 23:55:33,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:37,060 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_1d7fd242-2e31-486f-b745-c80066a9304f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2023-11-24 23:55:37,065 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_1d7fd242-2e31-486f-b745-c80066a9304f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2023-11-24 23:55:37,065 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_1d7fd242-2e31-486f-b745-c80066a9304f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2023-11-24 23:55:37,066 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_1d7fd242-2e31-486f-b745-c80066a9304f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2023-11-24 23:55:37,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:37,133 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:37,332 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"); [5181] [2023-11-24 23:55:37,334 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)); [5188] [2023-11-24 23:55:37,335 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5195] [2023-11-24 23:55:37,337 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; nop": : : "memory"); [5244] [2023-11-24 23:55:37,340 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5316] [2023-11-24 23:55:37,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5323] [2023-11-24 23:55:37,348 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/netdevice.h"), "i" (502), "i" (12UL)); [5522-5523] [2023-11-24 23:55:37,348 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [5529] [2023-11-24 23:55:37,601 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_1d7fd242-2e31-486f-b745-c80066a9304f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2023-11-24 23:55:37,602 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_1d7fd242-2e31-486f-b745-c80066a9304f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2023-11-24 23:55:37,602 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_1d7fd242-2e31-486f-b745-c80066a9304f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2023-11-24 23:55:37,603 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_1d7fd242-2e31-486f-b745-c80066a9304f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2023-11-24 23:55:37,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:37,794 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:37,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37 WrapperNode [2023-11-24 23:55:37,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:37,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:37,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:37,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:37,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,124 INFO L138 Inliner]: procedures = 411, calls = 2035, calls flagged for inlining = 211, calls inlined = 188, statements flattened = 4837 [2023-11-24 23:55:38,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:38,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:38,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:38,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:38,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:38,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:38,397 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:38,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:38,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:38,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:38,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:38,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:38,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d7fd242-2e31-486f-b745-c80066a9304f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_probe [2023-11-24 23:55:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_probe [2023-11-24 23:55:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-24 23:55:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-24 23:55:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:55:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:55:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-24 23:55:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-24 23:55:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-24 23:55:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-24 23:55:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-24 23:55:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-24 23:55:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2023-11-24 23:55:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2023-11-24 23:55:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure __dnet_set_hwaddr [2023-11-24 23:55:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __dnet_set_hwaddr [2023-11-24 23:55:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-24 23:55:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-24 23:55:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-24 23:55:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-24 23:55:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-24 23:55:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-24 23:55:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-24 23:55:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-24 23:55:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-24 23:55:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-24 23:55:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:55:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-24 23:55:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-24 23:55:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-24 23:55:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-24 23:55:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:55:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-11-24 23:55:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-11-24 23:55:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:55:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-24 23:55:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-24 23:55:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-24 23:55:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-24 23:55:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:55:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-24 23:55:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-24 23:55:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_reset_hw [2023-11-24 23:55:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_reset_hw [2023-11-24 23:55:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-24 23:55:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-24 23:55:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:55:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-24 23:55:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-24 23:55:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-24 23:55:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-24 23:55:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-11-24 23:55:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-11-24 23:55:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2023-11-24 23:55:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2023-11-24 23:55:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-24 23:55:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-24 23:55:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-24 23:55:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-24 23:55:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:55:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:55:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:55:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:55:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:55:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-24 23:55:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-24 23:55:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-24 23:55:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-24 23:55:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-24 23:55:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-24 23:55:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-24 23:55:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-24 23:55:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-24 23:55:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-24 23:55:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-24 23:55:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-24 23:55:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-24 23:55:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-24 23:55:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2023-11-24 23:55:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2023-11-24 23:55:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:55:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:55:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-24 23:55:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-24 23:55:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2023-11-24 23:55:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2023-11-24 23:55:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-24 23:55:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-24 23:55:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dnet [2023-11-24 23:55:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dnet [2023-11-24 23:55:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-24 23:55:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-24 23:55:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_readw_mac [2023-11-24 23:55:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_readw_mac [2023-11-24 23:55:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:55:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:55:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:55:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:55:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:55:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-24 23:55:38,490 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-24 23:55:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-24 23:55:38,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-24 23:55:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-24 23:55:38,490 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-24 23:55:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-24 23:55:38,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-24 23:55:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-24 23:55:38,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-24 23:55:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_close [2023-11-24 23:55:38,491 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_close [2023-11-24 23:55:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2023-11-24 23:55:38,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2023-11-24 23:55:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_handle_link_change [2023-11-24 23:55:38,491 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_handle_link_change [2023-11-24 23:55:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-24 23:55:38,491 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-24 23:55:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-24 23:55:38,492 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-24 23:55:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_writew_mac [2023-11-24 23:55:38,492 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_writew_mac [2023-11-24 23:55:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-24 23:55:38,492 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-24 23:55:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-24 23:55:38,492 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-24 23:55:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:55:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-24 23:55:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-24 23:55:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:55:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:55:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_remove [2023-11-24 23:55:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_remove [2023-11-24 23:55:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-24 23:55:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-24 23:55:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_open [2023-11-24 23:55:38,493 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_open [2023-11-24 23:55:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure phy_connect [2023-11-24 23:55:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_connect [2023-11-24 23:55:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-24 23:55:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-24 23:55:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-24 23:55:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-24 23:55:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:55:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-24 23:55:38,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-24 23:55:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-24 23:55:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-24 23:55:39,244 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:39,248 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:40,430 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-24 23:55:45,697 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-24 23:55:45,808 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:47,496 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:47,496 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:55:47,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:47 BoogieIcfgContainer [2023-11-24 23:55:47,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:47,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:47,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:47,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:47,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:33" (1/3) ... [2023-11-24 23:55:47,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3a446f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:47, skipping insertion in model container [2023-11-24 23:55:47,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (2/3) ... [2023-11-24 23:55:47,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3a446f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:47, skipping insertion in model container [2023-11-24 23:55:47,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:47" (3/3) ... [2023-11-24 23:55:47,509 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2023-11-24 23:55:47,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:47,531 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-24 23:55:47,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:47,640 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;@2c75e8ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:47,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 23:55:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 1135 states, 697 states have (on average 1.302725968436155) internal successors, (908), 707 states have internal predecessors, (908), 369 states have call successors, (369), 67 states have call predecessors, (369), 66 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2023-11-24 23:55:47,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-24 23:55:47,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:47,671 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:47,672 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 23:55:47,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:47,677 INFO L85 PathProgramCache]: Analyzing trace with hash 546326150, now seen corresponding path program 1 times [2023-11-24 23:55:47,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:47,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436167341] [2023-11-24 23:55:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:47,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-24 23:55:48,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:48,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436167341] [2023-11-24 23:55:48,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436167341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:48,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:48,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935899089] [2023-11-24 23:55:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:48,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:48,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:48,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:48,862 INFO L87 Difference]: Start difference. First operand has 1135 states, 697 states have (on average 1.302725968436155) internal successors, (908), 707 states have internal predecessors, (908), 369 states have call successors, (369), 67 states have call predecessors, (369), 66 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-24 23:55:51,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:55:53,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:55:55,872 WARN L539 Checker$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 23:55:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:57,461 INFO L93 Difference]: Finished difference Result 3298 states and 4801 transitions. [2023-11-24 23:55:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2023-11-24 23:55:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:57,518 INFO L225 Difference]: With dead ends: 3298 [2023-11-24 23:55:57,519 INFO L226 Difference]: Without dead ends: 2172 [2023-11-24 23:55:57,531 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 23:55:57,534 INFO L413 NwaCegarLoop]: 1405 mSDtfsCounter, 1544 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:57,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 2770 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 484 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2023-11-24 23:55:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2023-11-24 23:55:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 2168. [2023-11-24 23:55:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 1347 states have (on average 1.2962138084632517) internal successors, (1746), 1365 states have internal predecessors, (1746), 689 states have call successors, (689), 130 states have call predecessors, (689), 129 states have return successors, (686), 682 states have call predecessors, (686), 686 states have call successors, (686) [2023-11-24 23:55:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 3121 transitions. [2023-11-24 23:55:57,817 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 3121 transitions. Word has length 117 [2023-11-24 23:55:57,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:57,818 INFO L495 AbstractCegarLoop]: Abstraction has 2168 states and 3121 transitions. [2023-11-24 23:55:57,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-24 23:55:57,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 3121 transitions. [2023-11-24 23:55:57,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-24 23:55:57,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:57,827 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:57,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:55:57,828 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 23:55:57,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1778765427, now seen corresponding path program 1 times [2023-11-24 23:55:57,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:57,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527635896] [2023-11-24 23:55:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:57,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:58,416 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-24 23:55:58,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527635896] [2023-11-24 23:55:58,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527635896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:58,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:58,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:58,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043180264] [2023-11-24 23:55:58,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:58,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:58,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:58,426 INFO L87 Difference]: Start difference. First operand 2168 states and 3121 transitions. 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-24 23:56:00,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:03,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:05,463 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 23:56:07,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:07,505 INFO L93 Difference]: Finished difference Result 6300 states and 9157 transitions. [2023-11-24 23:56:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:07,506 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2023-11-24 23:56:07,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:07,554 INFO L225 Difference]: With dead ends: 6300 [2023-11-24 23:56:07,555 INFO L226 Difference]: Without dead ends: 4153 [2023-11-24 23:56:07,567 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 23:56:07,569 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 1484 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:07,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 2874 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 517 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2023-11-24 23:56:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4153 states. [2023-11-24 23:56:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4153 to 4124. [2023-11-24 23:56:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4124 states, 2578 states have (on average 1.299844840961986) internal successors, (3351), 2616 states have internal predecessors, (3351), 1288 states have call successors, (1288), 258 states have call predecessors, (1288), 255 states have return successors, (1385), 1267 states have call predecessors, (1385), 1285 states have call successors, (1385) [2023-11-24 23:56:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 6024 transitions. [2023-11-24 23:56:07,995 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 6024 transitions. Word has length 119 [2023-11-24 23:56:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:07,997 INFO L495 AbstractCegarLoop]: Abstraction has 4124 states and 6024 transitions. [2023-11-24 23:56:07,997 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-24 23:56:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 6024 transitions. [2023-11-24 23:56:08,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-24 23:56:08,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:08,009 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:08,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:56:08,015 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 23:56:08,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash 179184867, now seen corresponding path program 1 times [2023-11-24 23:56:08,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:08,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638610977] [2023-11-24 23:56:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:08,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-24 23:56:08,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:08,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638610977] [2023-11-24 23:56:08,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638610977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:08,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:08,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:08,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878125414] [2023-11-24 23:56:08,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:08,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:08,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:08,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:08,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:08,726 INFO L87 Difference]: Start difference. First operand 4124 states and 6024 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-24 23:56:11,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:13,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:15,569 WARN L539 Checker$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 23:56:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:17,999 INFO L93 Difference]: Finished difference Result 11766 states and 17076 transitions. [2023-11-24 23:56:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:18,000 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2023-11-24 23:56:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:18,064 INFO L225 Difference]: With dead ends: 11766 [2023-11-24 23:56:18,064 INFO L226 Difference]: Without dead ends: 7663 [2023-11-24 23:56:18,084 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 23:56:18,085 INFO L413 NwaCegarLoop]: 1747 mSDtfsCounter, 1331 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:18,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 3060 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 632 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2023-11-24 23:56:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2023-11-24 23:56:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 7630. [2023-11-24 23:56:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7630 states, 4730 states have (on average 1.2742071881606765) internal successors, (6027), 4812 states have internal predecessors, (6027), 2400 states have call successors, (2400), 502 states have call predecessors, (2400), 497 states have return successors, (2503), 2351 states have call predecessors, (2503), 2397 states have call successors, (2503) [2023-11-24 23:56:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7630 states to 7630 states and 10930 transitions. [2023-11-24 23:56:18,657 INFO L78 Accepts]: Start accepts. Automaton has 7630 states and 10930 transitions. Word has length 127 [2023-11-24 23:56:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:18,658 INFO L495 AbstractCegarLoop]: Abstraction has 7630 states and 10930 transitions. [2023-11-24 23:56:18,659 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-24 23:56:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7630 states and 10930 transitions. [2023-11-24 23:56:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-24 23:56:18,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:18,663 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:18,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:56:18,663 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 23:56:18,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash 364811050, now seen corresponding path program 1 times [2023-11-24 23:56:18,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:18,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266226399] [2023-11-24 23:56:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:18,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-24 23:56:18,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:18,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266226399] [2023-11-24 23:56:18,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266226399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:18,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:18,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:18,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679505379] [2023-11-24 23:56:18,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:18,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:18,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:18,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:18,999 INFO L87 Difference]: Start difference. First operand 7630 states and 10930 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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)