./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-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --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 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:38:10,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:38:10,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:38:10,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:38:10,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:38:10,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:38:10,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:38:10,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:38:10,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:38:10,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:38:10,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:38:10,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:38:10,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:38:10,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:38:10,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:38:10,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:38:10,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:38:10,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:38:10,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:38:10,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:38:10,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:38:10,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:38:10,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:38:10,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:38:10,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:38:10,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:38:10,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:38:10,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:38:10,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:38:10,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:38:10,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:38:10,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:38:10,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:38:10,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:38:10,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:38:10,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:38:10,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:38:10,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:38:10,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:38:10,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:38:10,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:38:10,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:38:10,368 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:38:10,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:38:10,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:38:10,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:38:10,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:38:10,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:38:10,370 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:38:10,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:38:10,371 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:38:10,371 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:38:10,372 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:38:10,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:38:10,372 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:38:10,372 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:38:10,373 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:38:10,373 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:38:10,373 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:38:10,373 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:38:10,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:38:10,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:38:10,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:38:10,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:38:10,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:38:10,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:38:10,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:38:10,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:38:10,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:38:10,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:38:10,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:38:10,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:38:10,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:38:10,378 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:38:10,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:38:10,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:38:10,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:38:10,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:38:10,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:38:10,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:38:10,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 [2022-11-23 14:38:10,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:38:10,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:38:10,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:38:10,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:38:10,709 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:38:10,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-23 14:38:13,863 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:38:14,634 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:38:14,635 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-23 14:38:14,713 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/data/31a07e04e/265e930d28624c3ea671b30a8b0cbbdf/FLAG5e3866f76 [2022-11-23 14:38:14,731 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/data/31a07e04e/265e930d28624c3ea671b30a8b0cbbdf [2022-11-23 14:38:14,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:38:14,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:38:14,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:38:14,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:38:14,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:38:14,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:14" (1/1) ... [2022-11-23 14:38:14,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a6827a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:14, skipping insertion in model container [2022-11-23 14:38:14,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:14" (1/1) ... [2022-11-23 14:38:14,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:38:14,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:38:19,969 WARN L237 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2022-11-23 14:38:19,979 WARN L237 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2022-11-23 14:38:19,980 WARN L237 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2022-11-23 14:38:19,980 WARN L237 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2022-11-23 14:38:20,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:38:20,069 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:38:20,644 WARN L237 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2022-11-23 14:38:20,644 WARN L237 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2022-11-23 14:38:20,645 WARN L237 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2022-11-23 14:38:20,646 WARN L237 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_383887bc-b5b5-48c1-9c3f-f700c105b71b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2022-11-23 14:38:20,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:38:20,967 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:38:20,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20 WrapperNode [2022-11-23 14:38:20,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:38:20,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:38:20,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:38:20,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:38:20,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:21,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:21,616 INFO L138 Inliner]: procedures = 567, calls = 5350, calls flagged for inlining = 289, calls inlined = 261, statements flattened = 11739 [2022-11-23 14:38:21,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:38:21,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:38:21,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:38:21,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:38:21,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:21,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:21,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:21,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:22,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:22,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:22,139 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:22,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:22,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:38:22,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:38:22,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:38:22,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:38:22,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (1/1) ... [2022-11-23 14:38:22,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:38:22,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:38:22,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:38:22,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383887bc-b5b5-48c1-9c3f-f700c105b71b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:38:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2022-11-23 14:38:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2022-11-23 14:38:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2022-11-23 14:38:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2022-11-23 14:38:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 14:38:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 14:38:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:38:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:38:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-23 14:38:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-23 14:38:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 14:38:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 14:38:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2022-11-23 14:38:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2022-11-23 14:38:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2022-11-23 14:38:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2022-11-23 14:38:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:38:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:38:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 14:38:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 14:38:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 14:38:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 14:38:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 14:38:22,327 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 14:38:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 14:38:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 14:38:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:38:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:38:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-23 14:38:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-23 14:38:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-23 14:38:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-23 14:38:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-23 14:38:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-23 14:38:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 14:38:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 14:38:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-23 14:38:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-23 14:38:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:38:22,330 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:38:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 14:38:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 14:38:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:38:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:38:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2022-11-23 14:38:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2022-11-23 14:38:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 14:38:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 14:38:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-23 14:38:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-23 14:38:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 14:38:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 14:38:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:38:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:38:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:38:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:38:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 14:38:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 14:38:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:38:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2022-11-23 14:38:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2022-11-23 14:38:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_61 [2022-11-23 14:38:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_61 [2022-11-23 14:38:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2022-11-23 14:38:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2022-11-23 14:38:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-23 14:38:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-23 14:38:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2022-11-23 14:38:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2022-11-23 14:38:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 14:38:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 14:38:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2022-11-23 14:38:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2022-11-23 14:38:22,339 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2022-11-23 14:38:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2022-11-23 14:38:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2022-11-23 14:38:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2022-11-23 14:38:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:38:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___5 [2022-11-23 14:38:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___5 [2022-11-23 14:38:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2022-11-23 14:38:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2022-11-23 14:38:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 14:38:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 14:38:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 14:38:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 14:38:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:38:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:38:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:38:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:38:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-23 14:38:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-23 14:38:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 14:38:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 14:38:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:38:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:38:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 14:38:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 14:38:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 14:38:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 14:38:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 14:38:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 14:38:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2022-11-23 14:38:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2022-11-23 14:38:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 14:38:22,351 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 14:38:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 14:38:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 14:38:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2022-11-23 14:38:22,353 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2022-11-23 14:38:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2022-11-23 14:38:22,355 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2022-11-23 14:38:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 14:38:22,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 14:38:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:38:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 14:38:22,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 14:38:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 14:38:22,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 14:38:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 14:38:22,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 14:38:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-23 14:38:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-23 14:38:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:38:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:38:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:38:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 14:38:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 14:38:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:38:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2022-11-23 14:38:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2022-11-23 14:38:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-23 14:38:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-23 14:38:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-23 14:38:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-23 14:38:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:38:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:38:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tulip_private [2022-11-23 14:38:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tulip_private [2022-11-23 14:38:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 14:38:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 14:38:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 14:38:22,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 14:38:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:38:22,366 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:38:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 14:38:22,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 14:38:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mii_lock_of_tulip_private [2022-11-23 14:38:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mii_lock_of_tulip_private [2022-11-23 14:38:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:38:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:38:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tulip_private [2022-11-23 14:38:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tulip_private [2022-11-23 14:38:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:38:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:38:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2022-11-23 14:38:22,368 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2022-11-23 14:38:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:38:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:38:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:38:22,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:38:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-23 14:38:22,369 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-23 14:38:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 14:38:22,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 14:38:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-23 14:38:22,370 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-23 14:38:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2022-11-23 14:38:22,370 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2022-11-23 14:38:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 14:38:22,370 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 14:38:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-23 14:38:22,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-23 14:38:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2022-11-23 14:38:22,371 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2022-11-23 14:38:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 14:38:22,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 14:38:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2022-11-23 14:38:22,371 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2022-11-23 14:38:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2022-11-23 14:38:22,372 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2022-11-23 14:38:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 14:38:22,372 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 14:38:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-23 14:38:22,372 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-23 14:38:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2022-11-23 14:38:22,372 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2022-11-23 14:38:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:38:22,373 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:38:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 14:38:22,373 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 14:38:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2022-11-23 14:38:22,373 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2022-11-23 14:38:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-23 14:38:22,374 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-23 14:38:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 14:38:22,374 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 14:38:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:38:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2022-11-23 14:38:22,374 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2022-11-23 14:38:22,375 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 14:38:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 14:38:22,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:38:22,375 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-23 14:38:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-23 14:38:22,375 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-23 14:38:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-23 14:38:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-23 14:38:22,376 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-23 14:38:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:38:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2022-11-23 14:38:22,376 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2022-11-23 14:38:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2022-11-23 14:38:22,376 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2022-11-23 14:38:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2022-11-23 14:38:22,377 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2022-11-23 14:38:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 14:38:22,377 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 14:38:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-23 14:38:22,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-23 14:38:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2022-11-23 14:38:22,378 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2022-11-23 14:38:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:38:22,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:38:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-23 14:38:22,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-23 14:38:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2022-11-23 14:38:22,378 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2022-11-23 14:38:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-23 14:38:22,379 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-23 14:38:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2022-11-23 14:38:22,380 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2022-11-23 14:38:22,382 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2022-11-23 14:38:22,382 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2022-11-23 14:38:22,382 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 14:38:22,382 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 14:38:22,382 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 14:38:22,382 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 14:38:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-23 14:38:22,383 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-23 14:38:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_62 [2022-11-23 14:38:22,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_62 [2022-11-23 14:38:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 14:38:22,383 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 14:38:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:38:22,383 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:38:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:38:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2022-11-23 14:38:22,383 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2022-11-23 14:38:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:38:22,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:38:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61___0 [2022-11-23 14:38:22,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61___0 [2022-11-23 14:38:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2022-11-23 14:38:22,384 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2022-11-23 14:38:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2022-11-23 14:38:22,384 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2022-11-23 14:38:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:38:22,384 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:38:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2022-11-23 14:38:22,384 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2022-11-23 14:38:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-23 14:38:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-23 14:38:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:38:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:38:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 14:38:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 14:38:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-23 14:38:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-23 14:38:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 14:38:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 14:38:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2022-11-23 14:38:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2022-11-23 14:38:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 14:38:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 14:38:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2022-11-23 14:38:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2022-11-23 14:38:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:38:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2022-11-23 14:38:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2022-11-23 14:38:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:38:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:38:23,783 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:38:23,787 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:38:25,214 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:38:35,261 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 14:38:35,487 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:38:41,259 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:38:41,259 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-23 14:38:41,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:41 BoogieIcfgContainer [2022-11-23 14:38:41,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:38:41,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:38:41,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:38:41,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:38:41,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:38:14" (1/3) ... [2022-11-23 14:38:41,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c46cbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:41, skipping insertion in model container [2022-11-23 14:38:41,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:20" (2/3) ... [2022-11-23 14:38:41,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c46cbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:41, skipping insertion in model container [2022-11-23 14:38:41,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:41" (3/3) ... [2022-11-23 14:38:41,287 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-23 14:38:41,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:38:41,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 14:38:41,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:38:41,468 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=LoopsAndPotentialCycles, 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;@19b4926, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:38:41,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 14:38:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 2631 states, 1546 states have (on average 1.3531694695989651) internal successors, (2092), 1648 states have internal predecessors, (2092), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 898 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-23 14:38:41,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-23 14:38:41,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:41,505 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:38:41,506 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)] === [2022-11-23 14:38:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1730519790, now seen corresponding path program 1 times [2022-11-23 14:38:41,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:41,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502867304] [2022-11-23 14:38:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 14:38:43,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:43,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502867304] [2022-11-23 14:38:43,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502867304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:43,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:43,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:38:43,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39609282] [2022-11-23 14:38:43,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:43,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:38:43,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:43,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:38:43,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:43,183 INFO L87 Difference]: Start difference. First operand has 2631 states, 1546 states have (on average 1.3531694695989651) internal successors, (2092), 1648 states have internal predecessors, (2092), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 898 states have call predecessors, (944), 944 states have call successors, (944) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 14:38:50,095 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 [] [2022-11-23 14:38:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:51,537 INFO L93 Difference]: Finished difference Result 7598 states and 11694 transitions. [2022-11-23 14:38:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:38:51,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2022-11-23 14:38:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:51,615 INFO L225 Difference]: With dead ends: 7598 [2022-11-23 14:38:51,616 INFO L226 Difference]: Without dead ends: 4983 [2022-11-23 14:38:51,647 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 [2022-11-23 14:38:51,654 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 3590 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 7884 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:51,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3590 Valid, 7884 Invalid, 910 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 902 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 14:38:51,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4983 states. [2022-11-23 14:38:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4983 to 4968. [2022-11-23 14:38:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4968 states, 2923 states have (on average 1.3445090660280534) internal successors, (3930), 3114 states have internal predecessors, (3930), 1785 states have call successors, (1785), 258 states have call predecessors, (1785), 257 states have return successors, (1781), 1694 states have call predecessors, (1781), 1781 states have call successors, (1781) [2022-11-23 14:38:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 7496 transitions. [2022-11-23 14:38:52,271 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 7496 transitions. Word has length 151 [2022-11-23 14:38:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:52,275 INFO L495 AbstractCegarLoop]: Abstraction has 4968 states and 7496 transitions. [2022-11-23 14:38:52,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 14:38:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 7496 transitions. [2022-11-23 14:38:52,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-23 14:38:52,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:52,295 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:38:52,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:38:52,296 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)] === [2022-11-23 14:38:52,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:52,296 INFO L85 PathProgramCache]: Analyzing trace with hash -30103493, now seen corresponding path program 1 times [2022-11-23 14:38:52,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:52,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891008164] [2022-11-23 14:38:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:52,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 14:38:53,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:53,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891008164] [2022-11-23 14:38:53,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891008164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:53,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:53,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:38:53,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483185023] [2022-11-23 14:38:53,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:38:53,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:38:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:53,279 INFO L87 Difference]: Start difference. First operand 4968 states and 7496 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 14:39:01,385 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 [] [2022-11-23 14:39:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:02,265 INFO L93 Difference]: Finished difference Result 11019 states and 16647 transitions. [2022-11-23 14:39:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2022-11-23 14:39:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:02,319 INFO L225 Difference]: With dead ends: 11019 [2022-11-23 14:39:02,319 INFO L226 Difference]: Without dead ends: 6078 [2022-11-23 14:39:02,351 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 [2022-11-23 14:39:02,352 INFO L413 NwaCegarLoop]: 4123 mSDtfsCounter, 2642 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 7595 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:02,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 7595 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 932 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-23 14:39:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2022-11-23 14:39:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 6052. [2022-11-23 14:39:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6052 states, 3612 states have (on average 1.350498338870432) internal successors, (4878), 3833 states have internal predecessors, (4878), 2126 states have call successors, (2126), 313 states have call predecessors, (2126), 311 states have return successors, (2122), 2019 states have call predecessors, (2122), 2122 states have call successors, (2122) [2022-11-23 14:39:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6052 states to 6052 states and 9126 transitions. [2022-11-23 14:39:03,000 INFO L78 Accepts]: Start accepts. Automaton has 6052 states and 9126 transitions. Word has length 159 [2022-11-23 14:39:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:03,002 INFO L495 AbstractCegarLoop]: Abstraction has 6052 states and 9126 transitions. [2022-11-23 14:39:03,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 14:39:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 6052 states and 9126 transitions. [2022-11-23 14:39:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-23 14:39:03,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:03,008 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:03,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:39:03,012 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)] === [2022-11-23 14:39:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:03,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1054179623, now seen corresponding path program 1 times [2022-11-23 14:39:03,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:03,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099041061] [2022-11-23 14:39:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 14:39:03,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:03,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099041061] [2022-11-23 14:39:03,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099041061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:03,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:03,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:03,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248775212] [2022-11-23 14:39:03,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:03,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:03,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:03,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:03,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:03,628 INFO L87 Difference]: Start difference. First operand 6052 states and 9126 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 14:39:08,519 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 [] [2022-11-23 14:39:11,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:11,894 INFO L93 Difference]: Finished difference Result 15526 states and 23377 transitions. [2022-11-23 14:39:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:11,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 160 [2022-11-23 14:39:11,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:11,968 INFO L225 Difference]: With dead ends: 15526 [2022-11-23 14:39:11,969 INFO L226 Difference]: Without dead ends: 9501 [2022-11-23 14:39:12,004 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 [2022-11-23 14:39:12,005 INFO L413 NwaCegarLoop]: 4358 mSDtfsCounter, 3446 mSDsluCounter, 3466 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3446 SdHoareTripleChecker+Valid, 7824 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:12,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3446 Valid, 7824 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 14:39:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9501 states. [2022-11-23 14:39:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9501 to 9463. [2022-11-23 14:39:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9463 states, 5617 states have (on average 1.3416414456115364) internal successors, (7536), 5966 states have internal predecessors, (7536), 3343 states have call successors, (3343), 503 states have call predecessors, (3343), 500 states have return successors, (3342), 3165 states have call predecessors, (3342), 3339 states have call successors, (3342) [2022-11-23 14:39:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9463 states to 9463 states and 14221 transitions. [2022-11-23 14:39:13,207 INFO L78 Accepts]: Start accepts. Automaton has 9463 states and 14221 transitions. Word has length 160 [2022-11-23 14:39:13,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:13,210 INFO L495 AbstractCegarLoop]: Abstraction has 9463 states and 14221 transitions. [2022-11-23 14:39:13,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 14:39:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 9463 states and 14221 transitions. [2022-11-23 14:39:13,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-23 14:39:13,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:13,217 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:13,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:39:13,218 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)] === [2022-11-23 14:39:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:13,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1050826470, now seen corresponding path program 1 times [2022-11-23 14:39:13,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:13,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460824905] [2022-11-23 14:39:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:13,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 14:39:14,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:14,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460824905] [2022-11-23 14:39:14,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460824905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:14,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:14,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:14,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706561049] [2022-11-23 14:39:14,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:14,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:14,098 INFO L87 Difference]: Start difference. First operand 9463 states and 14221 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 14:39:20,155 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 [] [2022-11-23 14:39:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:21,333 INFO L93 Difference]: Finished difference Result 26392 states and 39622 transitions. [2022-11-23 14:39:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:21,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2022-11-23 14:39:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:21,455 INFO L225 Difference]: With dead ends: 26392 [2022-11-23 14:39:21,456 INFO L226 Difference]: Without dead ends: 16956 [2022-11-23 14:39:21,504 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 [2022-11-23 14:39:21,505 INFO L413 NwaCegarLoop]: 4479 mSDtfsCounter, 3620 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 7974 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:21,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3620 Valid, 7974 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 941 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 14:39:21,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2022-11-23 14:39:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 16911. [2022-11-23 14:39:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16911 states, 10014 states have (on average 1.3377271819452765) internal successors, (13396), 10654 states have internal predecessors, (13396), 5978 states have call successors, (5978), 921 states have call predecessors, (5978), 916 states have return successors, (5980), 5647 states have call predecessors, (5980), 5974 states have call successors, (5980) [2022-11-23 14:39:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16911 states to 16911 states and 25354 transitions. [2022-11-23 14:39:23,008 INFO L78 Accepts]: Start accepts. Automaton has 16911 states and 25354 transitions. Word has length 165 [2022-11-23 14:39:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:23,009 INFO L495 AbstractCegarLoop]: Abstraction has 16911 states and 25354 transitions. [2022-11-23 14:39:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 14:39:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 16911 states and 25354 transitions. [2022-11-23 14:39:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-23 14:39:23,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:23,014 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:23,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:39:23,015 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)] === [2022-11-23 14:39:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:23,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1211718805, now seen corresponding path program 1 times [2022-11-23 14:39:23,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:23,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431693559] [2022-11-23 14:39:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:23,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 14:39:23,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:23,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431693559] [2022-11-23 14:39:23,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431693559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:23,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:23,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892038966] [2022-11-23 14:39:23,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:23,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:23,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:23,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:23,607 INFO L87 Difference]: Start difference. First operand 16911 states and 25354 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 14:39:30,139 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 [] [2022-11-23 14:39:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:31,792 INFO L93 Difference]: Finished difference Result 47457 states and 71079 transitions. [2022-11-23 14:39:31,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:31,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2022-11-23 14:39:31,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:32,015 INFO L225 Difference]: With dead ends: 47457 [2022-11-23 14:39:32,016 INFO L226 Difference]: Without dead ends: 30573 [2022-11-23 14:39:32,124 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 [2022-11-23 14:39:32,127 INFO L413 NwaCegarLoop]: 4682 mSDtfsCounter, 3631 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3631 SdHoareTripleChecker+Valid, 8162 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:32,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3631 Valid, 8162 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 952 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-23 14:39:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30573 states. [2022-11-23 14:39:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30573 to 30528. [2022-11-23 14:39:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30528 states, 18091 states have (on average 1.3360234370681554) internal successors, (24170), 19244 states have internal predecessors, (24170), 10736 states have call successors, (10736), 1715 states have call predecessors, (10736), 1698 states have return successors, (10770), 10116 states have call predecessors, (10770), 10732 states have call successors, (10770) [2022-11-23 14:39:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30528 states to 30528 states and 45676 transitions. [2022-11-23 14:39:34,959 INFO L78 Accepts]: Start accepts. Automaton has 30528 states and 45676 transitions. Word has length 172 [2022-11-23 14:39:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:34,960 INFO L495 AbstractCegarLoop]: Abstraction has 30528 states and 45676 transitions. [2022-11-23 14:39:34,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 14:39:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 30528 states and 45676 transitions. [2022-11-23 14:39:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-23 14:39:34,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:34,964 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:34,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:39:34,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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)] === [2022-11-23 14:39:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1951855211, now seen corresponding path program 1 times [2022-11-23 14:39:34,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:34,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801910531] [2022-11-23 14:39:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:34,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 14:39:35,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:35,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801910531] [2022-11-23 14:39:35,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801910531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:35,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:35,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:35,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373645452] [2022-11-23 14:39:35,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:35,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:35,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:35,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:35,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:35,778 INFO L87 Difference]: Start difference. First operand 30528 states and 45676 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:39:42,916 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 [] [2022-11-23 14:39:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:45,229 INFO L93 Difference]: Finished difference Result 89985 states and 135025 transitions. [2022-11-23 14:39:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:45,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2022-11-23 14:39:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:45,831 INFO L225 Difference]: With dead ends: 89985 [2022-11-23 14:39:45,831 INFO L226 Difference]: Without dead ends: 59484 [2022-11-23 14:39:45,990 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 [2022-11-23 14:39:45,991 INFO L413 NwaCegarLoop]: 4477 mSDtfsCounter, 3621 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 7878 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:45,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3621 Valid, 7878 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 916 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-23 14:39:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59484 states. [2022-11-23 14:39:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59484 to 59416. [2022-11-23 14:39:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59416 states, 35285 states have (on average 1.3376789003825988) internal successors, (47200), 37530 states have internal predecessors, (47200), 20826 states have call successors, (20826), 3357 states have call predecessors, (20826), 3302 states have return successors, (21261), 19569 states have call predecessors, (21261), 20822 states have call successors, (21261) [2022-11-23 14:39:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59416 states to 59416 states and 89287 transitions. [2022-11-23 14:39:51,322 INFO L78 Accepts]: Start accepts. Automaton has 59416 states and 89287 transitions. Word has length 173 [2022-11-23 14:39:51,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:51,327 INFO L495 AbstractCegarLoop]: Abstraction has 59416 states and 89287 transitions. [2022-11-23 14:39:51,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:39:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand 59416 states and 89287 transitions. [2022-11-23 14:39:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-23 14:39:51,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:51,331 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:51,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:39:51,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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)] === [2022-11-23 14:39:51,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:51,332 INFO L85 PathProgramCache]: Analyzing trace with hash 147839191, now seen corresponding path program 1 times [2022-11-23 14:39:51,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:51,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599725553] [2022-11-23 14:39:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:51,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-23 14:39:52,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:52,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599725553] [2022-11-23 14:39:52,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599725553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:52,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:52,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318055939] [2022-11-23 14:39:52,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:52,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:52,146 INFO L87 Difference]: Start difference. First operand 59416 states and 89287 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:40:00,439 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 [] [2022-11-23 14:40:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:04,845 INFO L93 Difference]: Finished difference Result 174434 states and 262220 transitions. [2022-11-23 14:40:04,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:40:04,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2022-11-23 14:40:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:05,946 INFO L225 Difference]: With dead ends: 174434 [2022-11-23 14:40:05,946 INFO L226 Difference]: Without dead ends: 115045 [2022-11-23 14:40:06,243 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 [2022-11-23 14:40:06,244 INFO L413 NwaCegarLoop]: 4562 mSDtfsCounter, 3612 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 8056 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:06,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3612 Valid, 8056 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-23 14:40:06,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115045 states. [2022-11-23 14:40:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115045 to 114976. [2022-11-23 14:40:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114976 states, 68242 states have (on average 1.3373435714076376) internal successors, (91263), 72685 states have internal predecessors, (91263), 40322 states have call successors, (40322), 6518 states have call predecessors, (40322), 6409 states have return successors, (41132), 37817 states have call predecessors, (41132), 40318 states have call successors, (41132) [2022-11-23 14:40:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114976 states to 114976 states and 172717 transitions. [2022-11-23 14:40:15,129 INFO L78 Accepts]: Start accepts. Automaton has 114976 states and 172717 transitions. Word has length 172 [2022-11-23 14:40:15,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:15,130 INFO L495 AbstractCegarLoop]: Abstraction has 114976 states and 172717 transitions. [2022-11-23 14:40:15,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:40:15,130 INFO L276 IsEmpty]: Start isEmpty. Operand 114976 states and 172717 transitions. [2022-11-23 14:40:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 14:40:15,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:15,136 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:15,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:40:15,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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)] === [2022-11-23 14:40:15,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash 267454460, now seen corresponding path program 1 times [2022-11-23 14:40:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:15,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966251117] [2022-11-23 14:40:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2022-11-23 14:40:15,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:15,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966251117] [2022-11-23 14:40:15,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966251117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:15,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:15,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:40:15,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051513432] [2022-11-23 14:40:15,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:15,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:40:15,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:40:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:40:15,691 INFO L87 Difference]: Start difference. First operand 114976 states and 172717 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 14:40:24,887 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 []