./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba --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 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a --- 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-b5237d8 [2022-11-22 02:42:47,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:42:47,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:42:47,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:42:47,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:42:47,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:42:47,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:42:47,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:42:47,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:42:47,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:42:47,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:42:47,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:42:47,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:42:47,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:42:47,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:42:47,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:42:47,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:42:47,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:42:47,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:42:47,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:42:47,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:42:47,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:42:47,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:42:47,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:42:47,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:42:47,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:42:47,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:42:47,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:42:47,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:42:47,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:42:47,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:42:47,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:42:47,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:42:47,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:42:47,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:42:47,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:42:47,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:42:47,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:42:47,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:42:47,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:42:47,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:42:47,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:42:47,379 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:42:47,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:42:47,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:42:47,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:42:47,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:42:47,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:42:47,381 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:42:47,381 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:42:47,382 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:42:47,382 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:42:47,382 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:42:47,382 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:42:47,383 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:42:47,383 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:42:47,387 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:42:47,387 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:42:47,387 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:42:47,387 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:42:47,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:42:47,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:42:47,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:42:47,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:42:47,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:42:47,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:42:47,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:42:47,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:42:47,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:42:47,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:42:47,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:42:47,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:42:47,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:42:47,391 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:42:47,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:42:47,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:42:47,392 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:42:47,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:42:47,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:42:47,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:42:47,393 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_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a [2022-11-22 02:42:47,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:42:47,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:42:47,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:42:47,736 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:42:47,737 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:42:47,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2022-11-22 02:42:50,756 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:42:51,316 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:42:51,317 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2022-11-22 02:42:51,376 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/data/7c89c3c60/d9d170a844c84099b3d274ca36d03c81/FLAG6a00e052c [2022-11-22 02:42:51,394 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/data/7c89c3c60/d9d170a844c84099b3d274ca36d03c81 [2022-11-22 02:42:51,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:42:51,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:42:51,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:42:51,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:42:51,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:42:51,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:42:51" (1/1) ... [2022-11-22 02:42:51,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a540a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:51, skipping insertion in model container [2022-11-22 02:42:51,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:42:51" (1/1) ... [2022-11-22 02:42:51,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:42:51,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:42:54,056 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_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2022-11-22 02:42:54,064 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_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2022-11-22 02:42:54,065 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_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2022-11-22 02:42:54,072 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_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2022-11-22 02:42:54,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:42:54,190 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:42:54,579 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_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2022-11-22 02:42:54,580 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_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2022-11-22 02:42:54,580 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_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2022-11-22 02:42:54,581 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_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2022-11-22 02:42:54,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:42:54,761 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:42:54,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54 WrapperNode [2022-11-22 02:42:54,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:42:54,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:42:54,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:42:54,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:42:54,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:54,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,113 INFO L138 Inliner]: procedures = 422, calls = 1985, calls flagged for inlining = 201, calls inlined = 184, statements flattened = 4985 [2022-11-22 02:42:55,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:42:55,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:42:55,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:42:55,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:42:55,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:42:55,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:42:55,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:42:55,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:42:55,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (1/1) ... [2022-11-22 02:42:55,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:42:55,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:42:55,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:42:55,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d91c9a6-13ca-43f0-ace6-e80e8a81f8fc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:42:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 02:42:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 02:42:55,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:42:55,563 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:42:55,563 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 02:42:55,563 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 02:42:55,563 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_set_filter_mode [2022-11-22 02:42:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_set_filter_mode [2022-11-22 02:42:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 02:42:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 02:42:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:42:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:42:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_resume [2022-11-22 02:42:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_resume [2022-11-22 02:42:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:42:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:42:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-22 02:42:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-22 02:42:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dmfe_board_info [2022-11-22 02:42:55,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dmfe_board_info [2022-11-22 02:42:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:42:55,568 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:42:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 02:42:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 02:42:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 02:42:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 02:42:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-22 02:42:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-22 02:42:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 02:42:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 02:42:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 02:42:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 02:42:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_reuse_skb [2022-11-22 02:42:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_reuse_skb [2022-11-22 02:42:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-22 02:42:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-22 02:42:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 02:42:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 02:42:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:42:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:42:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:42:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:42:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 02:42:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 02:42:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:42:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:42:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:42:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:42:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2022-11-22 02:42:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2022-11-22 02:42:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:42:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure poll_dmfe [2022-11-22 02:42:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_dmfe [2022-11-22 02:42:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:42:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:42:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:42:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:42:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:42:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-22 02:42:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-22 02:42:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:42:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:42:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:42:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_remove_one [2022-11-22 02:42:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_remove_one [2022-11-22 02:42:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2022-11-22 02:42:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2022-11-22 02:42:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:42:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure dm9132_id_table [2022-11-22 02:42:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure dm9132_id_table [2022-11-22 02:42:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:42:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:42:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 02:42:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 02:42:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:42:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:42:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:42:55,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:42:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_interrupt [2022-11-22 02:42:55,582 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_interrupt [2022-11-22 02:42:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 02:42:55,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 02:42:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2022-11-22 02:42:55,583 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2022-11-22 02:42:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:42:55,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:42:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure cal_CRC [2022-11-22 02:42:55,584 INFO L138 BoogieDeclarations]: Found implementation of procedure cal_CRC [2022-11-22 02:42:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:42:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:42:55,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:42:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:42:55,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:42:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:42:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2022-11-22 02:42:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2022-11-22 02:42:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:42:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:42:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:42:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:42:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:42:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-22 02:42:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-22 02:42:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:42:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:42:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-22 02:42:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-22 02:42:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_free_rxbuffer [2022-11-22 02:42:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_free_rxbuffer [2022-11-22 02:42:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 02:42:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 02:42:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:42:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:42:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 02:42:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 02:42:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:42:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:42:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_stop [2022-11-22 02:42:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_stop [2022-11-22 02:42:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:42:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:42:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:42:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:42:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:42:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:42:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:42:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:42:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 02:42:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 02:42:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_open [2022-11-22 02:42:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_open [2022-11-22 02:42:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 02:42:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 02:42:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 02:42:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 02:42:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2022-11-22 02:42:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2022-11-22 02:42:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:42:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:42:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 02:42:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 02:42:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2022-11-22 02:42:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2022-11-22 02:42:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:42:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:42:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:42:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:42:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 02:42:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 02:42:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-22 02:42:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-22 02:42:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:42:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_init_dm910x [2022-11-22 02:42:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_init_dm910x [2022-11-22 02:42:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:42:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:42:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:42:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:42:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-22 02:42:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-22 02:42:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:42:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:42:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2022-11-22 02:42:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2022-11-22 02:42:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:42:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:42:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:42:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2022-11-22 02:42:55,602 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2022-11-22 02:42:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2022-11-22 02:42:55,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2022-11-22 02:42:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2022-11-22 02:42:55,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2022-11-22 02:42:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:42:55,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:42:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 02:42:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 02:42:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 02:42:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 02:42:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:42:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:42:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:42:56,528 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:42:56,532 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:42:56,904 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:43:00,281 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:43:00,394 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:43:02,225 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:43:02,225 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:43:02,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:43:02 BoogieIcfgContainer [2022-11-22 02:43:02,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:43:02,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:43:02,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:43:02,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:43:02,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:42:51" (1/3) ... [2022-11-22 02:43:02,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba1226e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:43:02, skipping insertion in model container [2022-11-22 02:43:02,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:54" (2/3) ... [2022-11-22 02:43:02,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba1226e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:43:02, skipping insertion in model container [2022-11-22 02:43:02,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:43:02" (3/3) ... [2022-11-22 02:43:02,243 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2022-11-22 02:43:02,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:43:02,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:43:02,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:43:02,344 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;@6b9d4b1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:43:02,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:43:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 1182 states, 677 states have (on average 1.2983751846381093) internal successors, (879), 700 states have internal predecessors, (879), 420 states have call successors, (420), 83 states have call predecessors, (420), 82 states have return successors, (414), 405 states have call predecessors, (414), 414 states have call successors, (414) [2022-11-22 02:43:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-22 02:43:02,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:02,370 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:02,371 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)] === [2022-11-22 02:43:02,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 605554581, now seen corresponding path program 1 times [2022-11-22 02:43:02,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:02,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297291430] [2022-11-22 02:43:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:02,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:43:03,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297291430] [2022-11-22 02:43:03,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297291430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:03,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:03,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:43:03,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910053351] [2022-11-22 02:43:03,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:03,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:43:03,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:43:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:43:03,236 INFO L87 Difference]: Start difference. First operand has 1182 states, 677 states have (on average 1.2983751846381093) internal successors, (879), 700 states have internal predecessors, (879), 420 states have call successors, (420), 83 states have call predecessors, (420), 82 states have return successors, (414), 405 states have call predecessors, (414), 414 states have call successors, (414) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:43:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:06,276 INFO L93 Difference]: Finished difference Result 3430 states and 5034 transitions. [2022-11-22 02:43:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:06,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-11-22 02:43:06,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:06,314 INFO L225 Difference]: With dead ends: 3430 [2022-11-22 02:43:06,314 INFO L226 Difference]: Without dead ends: 2255 [2022-11-22 02:43:06,329 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 [2022-11-22 02:43:06,332 INFO L413 NwaCegarLoop]: 1832 mSDtfsCounter, 1597 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:06,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 3241 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 02:43:06,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2022-11-22 02:43:06,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2251. [2022-11-22 02:43:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1301 states have (on average 1.2890084550345888) internal successors, (1677), 1346 states have internal predecessors, (1677), 787 states have call successors, (787), 161 states have call predecessors, (787), 160 states have return successors, (783), 765 states have call predecessors, (783), 783 states have call successors, (783) [2022-11-22 02:43:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3247 transitions. [2022-11-22 02:43:06,641 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3247 transitions. Word has length 101 [2022-11-22 02:43:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:06,647 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3247 transitions. [2022-11-22 02:43:06,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:43:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3247 transitions. [2022-11-22 02:43:06,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 02:43:06,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:06,656 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:06,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:43:06,657 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)] === [2022-11-22 02:43:06,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1879988471, now seen corresponding path program 1 times [2022-11-22 02:43:06,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:06,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914666515] [2022-11-22 02:43:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:06,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:43:07,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:07,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914666515] [2022-11-22 02:43:07,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914666515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:07,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:07,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:43:07,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848536520] [2022-11-22 02:43:07,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:07,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:43:07,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:07,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:43:07,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:43:07,032 INFO L87 Difference]: Start difference. First operand 2251 states and 3247 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:43:10,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:10,215 INFO L93 Difference]: Finished difference Result 6661 states and 9617 transitions. [2022-11-22 02:43:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:10,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-22 02:43:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:10,255 INFO L225 Difference]: With dead ends: 6661 [2022-11-22 02:43:10,255 INFO L226 Difference]: Without dead ends: 4427 [2022-11-22 02:43:10,273 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 [2022-11-22 02:43:10,274 INFO L413 NwaCegarLoop]: 1864 mSDtfsCounter, 1640 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:10,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 3271 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 02:43:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2022-11-22 02:43:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4397. [2022-11-22 02:43:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 2555 states have (on average 1.2915851272015655) internal successors, (3300), 2649 states have internal predecessors, (3300), 1522 states have call successors, (1522), 320 states have call predecessors, (1522), 317 states have return successors, (1528), 1471 states have call predecessors, (1528), 1518 states have call successors, (1528) [2022-11-22 02:43:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6350 transitions. [2022-11-22 02:43:10,623 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6350 transitions. Word has length 105 [2022-11-22 02:43:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:10,624 INFO L495 AbstractCegarLoop]: Abstraction has 4397 states and 6350 transitions. [2022-11-22 02:43:10,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:43:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6350 transitions. [2022-11-22 02:43:10,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 02:43:10,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:10,626 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:10,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:43:10,627 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)] === [2022-11-22 02:43:10,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2104025459, now seen corresponding path program 1 times [2022-11-22 02:43:10,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:10,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692893623] [2022-11-22 02:43:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:10,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:43:10,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:10,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692893623] [2022-11-22 02:43:10,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692893623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:10,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:10,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:43:10,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161361320] [2022-11-22 02:43:10,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:10,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:43:10,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:10,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:43:10,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:43:10,909 INFO L87 Difference]: Start difference. First operand 4397 states and 6350 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:43:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:13,730 INFO L93 Difference]: Finished difference Result 12551 states and 18094 transitions. [2022-11-22 02:43:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:13,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-22 02:43:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:13,799 INFO L225 Difference]: With dead ends: 12551 [2022-11-22 02:43:13,799 INFO L226 Difference]: Without dead ends: 8171 [2022-11-22 02:43:13,828 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 [2022-11-22 02:43:13,831 INFO L413 NwaCegarLoop]: 1889 mSDtfsCounter, 1454 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:13,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3289 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 02:43:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2022-11-22 02:43:14,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 8137. [2022-11-22 02:43:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8137 states, 4739 states have (on average 1.293943870014771) internal successors, (6132), 4921 states have internal predecessors, (6132), 2784 states have call successors, (2784), 618 states have call predecessors, (2784), 611 states have return successors, (2806), 2681 states have call predecessors, (2806), 2780 states have call successors, (2806) [2022-11-22 02:43:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8137 states to 8137 states and 11722 transitions. [2022-11-22 02:43:14,489 INFO L78 Accepts]: Start accepts. Automaton has 8137 states and 11722 transitions. Word has length 105 [2022-11-22 02:43:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:14,490 INFO L495 AbstractCegarLoop]: Abstraction has 8137 states and 11722 transitions. [2022-11-22 02:43:14,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:43:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8137 states and 11722 transitions. [2022-11-22 02:43:14,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-22 02:43:14,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:14,501 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:14,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:43:14,501 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)] === [2022-11-22 02:43:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 50789912, now seen corresponding path program 1 times [2022-11-22 02:43:14,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:14,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825098093] [2022-11-22 02:43:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:43:15,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:15,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825098093] [2022-11-22 02:43:15,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825098093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:15,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:15,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:43:15,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953965159] [2022-11-22 02:43:15,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:15,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:43:15,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:15,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:43:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:43:15,234 INFO L87 Difference]: Start difference. First operand 8137 states and 11722 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:43:23,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:23,429 INFO L93 Difference]: Finished difference Result 18696 states and 26839 transitions. [2022-11-22 02:43:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:43:23,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2022-11-22 02:43:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:23,499 INFO L225 Difference]: With dead ends: 18696 [2022-11-22 02:43:23,499 INFO L226 Difference]: Without dead ends: 10576 [2022-11-22 02:43:23,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:43:23,539 INFO L413 NwaCegarLoop]: 2162 mSDtfsCounter, 3550 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3649 SdHoareTripleChecker+Valid, 5171 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:23,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3649 Valid, 5171 Invalid, 2946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [503 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 02:43:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2022-11-22 02:43:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 10504. [2022-11-22 02:43:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10504 states, 6287 states have (on average 1.3034833783998727) internal successors, (8195), 6538 states have internal predecessors, (8195), 3375 states have call successors, (3375), 854 states have call predecessors, (3375), 839 states have return successors, (3384), 3221 states have call predecessors, (3384), 3371 states have call successors, (3384) [2022-11-22 02:43:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10504 states to 10504 states and 14954 transitions. [2022-11-22 02:43:24,251 INFO L78 Accepts]: Start accepts. Automaton has 10504 states and 14954 transitions. Word has length 108 [2022-11-22 02:43:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:24,253 INFO L495 AbstractCegarLoop]: Abstraction has 10504 states and 14954 transitions. [2022-11-22 02:43:24,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:43:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 10504 states and 14954 transitions. [2022-11-22 02:43:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-22 02:43:24,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:24,255 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:24,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:43:24,256 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)] === [2022-11-22 02:43:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1584871889, now seen corresponding path program 1 times [2022-11-22 02:43:24,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:24,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003778750] [2022-11-22 02:43:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:24,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:43:24,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:24,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003778750] [2022-11-22 02:43:24,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003778750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:24,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:24,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:43:24,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672236920] [2022-11-22 02:43:24,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:24,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:43:24,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:24,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:43:24,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:43:24,441 INFO L87 Difference]: Start difference. First operand 10504 states and 14954 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:43:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:27,598 INFO L93 Difference]: Finished difference Result 27897 states and 39637 transitions. [2022-11-22 02:43:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2022-11-22 02:43:27,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:27,686 INFO L225 Difference]: With dead ends: 27897 [2022-11-22 02:43:27,686 INFO L226 Difference]: Without dead ends: 17410 [2022-11-22 02:43:27,731 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 [2022-11-22 02:43:27,732 INFO L413 NwaCegarLoop]: 1814 mSDtfsCounter, 1520 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:27,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 3210 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:43:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17410 states. [2022-11-22 02:43:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17410 to 17378. [2022-11-22 02:43:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17378 states, 10333 states have (on average 1.2898480596148263) internal successors, (13328), 10738 states have internal predecessors, (13328), 5622 states have call successors, (5622), 1449 states have call predecessors, (5622), 1420 states have return successors, (5647), 5349 states have call predecessors, (5647), 5618 states have call successors, (5647) [2022-11-22 02:43:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17378 states to 17378 states and 24597 transitions. [2022-11-22 02:43:29,077 INFO L78 Accepts]: Start accepts. Automaton has 17378 states and 24597 transitions. Word has length 110 [2022-11-22 02:43:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:29,078 INFO L495 AbstractCegarLoop]: Abstraction has 17378 states and 24597 transitions. [2022-11-22 02:43:29,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:43:29,078 INFO L276 IsEmpty]: Start isEmpty. Operand 17378 states and 24597 transitions. [2022-11-22 02:43:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-22 02:43:29,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:29,081 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:29,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:43:29,081 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)] === [2022-11-22 02:43:29,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:29,082 INFO L85 PathProgramCache]: Analyzing trace with hash -617306370, now seen corresponding path program 1 times [2022-11-22 02:43:29,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:29,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59233751] [2022-11-22 02:43:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:29,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-22 02:43:29,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:29,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59233751] [2022-11-22 02:43:29,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59233751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:29,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:29,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:43:29,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893888763] [2022-11-22 02:43:29,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:29,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:43:29,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:43:29,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:43:29,352 INFO L87 Difference]: Start difference. First operand 17378 states and 24597 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 02:43:33,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:33,073 INFO L93 Difference]: Finished difference Result 50976 states and 72189 transitions. [2022-11-22 02:43:33,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:33,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2022-11-22 02:43:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:33,234 INFO L225 Difference]: With dead ends: 50976 [2022-11-22 02:43:33,234 INFO L226 Difference]: Without dead ends: 33615 [2022-11-22 02:43:33,302 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 [2022-11-22 02:43:33,304 INFO L413 NwaCegarLoop]: 2036 mSDtfsCounter, 1647 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:33,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 3469 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 02:43:33,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33615 states. [2022-11-22 02:43:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33615 to 33541. [2022-11-22 02:43:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33541 states, 19920 states have (on average 1.2901606425702812) internal successors, (25700), 20748 states have internal predecessors, (25700), 10865 states have call successors, (10865), 2810 states have call predecessors, (10865), 2753 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-22 02:43:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33541 states to 33541 states and 47484 transitions. [2022-11-22 02:43:35,409 INFO L78 Accepts]: Start accepts. Automaton has 33541 states and 47484 transitions. Word has length 123 [2022-11-22 02:43:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:35,410 INFO L495 AbstractCegarLoop]: Abstraction has 33541 states and 47484 transitions. [2022-11-22 02:43:35,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 02:43:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 33541 states and 47484 transitions. [2022-11-22 02:43:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-22 02:43:35,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:35,413 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:35,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:43:35,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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)] === [2022-11-22 02:43:35,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:35,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1018813933, now seen corresponding path program 1 times [2022-11-22 02:43:35,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:35,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78896795] [2022-11-22 02:43:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:35,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-22 02:43:36,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:36,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78896795] [2022-11-22 02:43:36,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78896795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:36,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:36,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:43:36,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024747381] [2022-11-22 02:43:36,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:36,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:43:36,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:36,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:43:36,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:43:36,379 INFO L87 Difference]: Start difference. First operand 33541 states and 47484 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:43:38,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:41,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:43,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:43,895 INFO L93 Difference]: Finished difference Result 33547 states and 47489 transitions. [2022-11-22 02:43:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:43:43,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-11-22 02:43:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:44,159 INFO L225 Difference]: With dead ends: 33547 [2022-11-22 02:43:44,160 INFO L226 Difference]: Without dead ends: 33545 [2022-11-22 02:43:44,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:43:44,178 INFO L413 NwaCegarLoop]: 1432 mSDtfsCounter, 1639 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 4282 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:44,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 4282 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-22 02:43:44,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33545 states. [2022-11-22 02:43:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33545 to 33545. [2022-11-22 02:43:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33545 states, 19923 states have (on average 1.2901169502584953) internal successors, (25703), 20751 states have internal predecessors, (25703), 10865 states have call successors, (10865), 2811 states have call predecessors, (10865), 2754 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-22 02:43:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33545 states to 33545 states and 47487 transitions. [2022-11-22 02:43:46,572 INFO L78 Accepts]: Start accepts. Automaton has 33545 states and 47487 transitions. Word has length 146 [2022-11-22 02:43:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:46,573 INFO L495 AbstractCegarLoop]: Abstraction has 33545 states and 47487 transitions. [2022-11-22 02:43:46,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:43:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 33545 states and 47487 transitions. [2022-11-22 02:43:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-22 02:43:46,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:46,576 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:46,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:43:46,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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)] === [2022-11-22 02:43:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:46,578 INFO L85 PathProgramCache]: Analyzing trace with hash 983805278, now seen corresponding path program 1 times [2022-11-22 02:43:46,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:46,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789793451] [2022-11-22 02:43:46,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:46,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-22 02:43:47,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:47,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789793451] [2022-11-22 02:43:47,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789793451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:47,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:47,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:43:47,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748657105] [2022-11-22 02:43:47,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:47,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:43:47,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:43:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:43:47,025 INFO L87 Difference]: Start difference. First operand 33545 states and 47487 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:43:48,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:50,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:43:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:53,394 INFO L93 Difference]: Finished difference Result 33551 states and 47492 transitions. [2022-11-22 02:43:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:43:53,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2022-11-22 02:43:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:53,564 INFO L225 Difference]: With dead ends: 33551 [2022-11-22 02:43:53,564 INFO L226 Difference]: Without dead ends: 33549 [2022-11-22 02:43:53,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:43:53,587 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1634 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:53,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 02:43:53,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33549 states. [2022-11-22 02:43:55,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33549 to 33549. [2022-11-22 02:43:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33549 states, 19926 states have (on average 1.2900732711030813) internal successors, (25706), 20754 states have internal predecessors, (25706), 10865 states have call successors, (10865), 2812 states have call predecessors, (10865), 2755 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-22 02:43:55,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33549 states to 33549 states and 47490 transitions. [2022-11-22 02:43:55,852 INFO L78 Accepts]: Start accepts. Automaton has 33549 states and 47490 transitions. Word has length 151 [2022-11-22 02:43:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:55,853 INFO L495 AbstractCegarLoop]: Abstraction has 33549 states and 47490 transitions. [2022-11-22 02:43:55,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:43:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 33549 states and 47490 transitions. [2022-11-22 02:43:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-22 02:43:55,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:55,857 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:43:55,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:43:55,858 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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)] === [2022-11-22 02:43:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2037525402, now seen corresponding path program 1 times [2022-11-22 02:43:55,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:55,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069541870] [2022-11-22 02:43:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:55,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-22 02:43:56,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069541870] [2022-11-22 02:43:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069541870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:56,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:56,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:43:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543626948] [2022-11-22 02:43:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:56,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:43:56,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:43:56,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:43:56,384 INFO L87 Difference]: Start difference. First operand 33549 states and 47490 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:43:58,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:02,266 INFO L93 Difference]: Finished difference Result 33555 states and 47495 transitions. [2022-11-22 02:44:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2022-11-22 02:44:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:02,394 INFO L225 Difference]: With dead ends: 33555 [2022-11-22 02:44:02,394 INFO L226 Difference]: Without dead ends: 33553 [2022-11-22 02:44:02,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:44:02,415 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1633 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:02,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 02:44:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33553 states. [2022-11-22 02:44:04,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33553 to 33553. [2022-11-22 02:44:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33553 states, 19929 states have (on average 1.2900296050980982) internal successors, (25709), 20757 states have internal predecessors, (25709), 10865 states have call successors, (10865), 2813 states have call predecessors, (10865), 2756 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-22 02:44:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33553 states to 33553 states and 47493 transitions. [2022-11-22 02:44:04,939 INFO L78 Accepts]: Start accepts. Automaton has 33553 states and 47493 transitions. Word has length 159 [2022-11-22 02:44:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:04,940 INFO L495 AbstractCegarLoop]: Abstraction has 33553 states and 47493 transitions. [2022-11-22 02:44:04,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:44:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 33553 states and 47493 transitions. [2022-11-22 02:44:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-22 02:44:04,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:04,945 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:44:04,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:44:04,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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)] === [2022-11-22 02:44:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:04,946 INFO L85 PathProgramCache]: Analyzing trace with hash 193106494, now seen corresponding path program 1 times [2022-11-22 02:44:04,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:04,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699152910] [2022-11-22 02:44:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:04,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-11-22 02:44:05,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:05,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699152910] [2022-11-22 02:44:05,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699152910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:05,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:05,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:05,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119749696] [2022-11-22 02:44:05,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:05,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:05,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:05,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:05,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:05,321 INFO L87 Difference]: Start difference. First operand 33553 states and 47493 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:44:08,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:11,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:11,958 INFO L93 Difference]: Finished difference Result 33559 states and 47498 transitions. [2022-11-22 02:44:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:11,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2022-11-22 02:44:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:12,085 INFO L225 Difference]: With dead ends: 33559 [2022-11-22 02:44:12,086 INFO L226 Difference]: Without dead ends: 33557 [2022-11-22 02:44:12,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:44:12,102 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1634 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:12,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 02:44:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33557 states. [2022-11-22 02:44:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33557 to 33557. [2022-11-22 02:44:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33557 states, 19932 states have (on average 1.2899859522376078) internal successors, (25712), 20760 states have internal predecessors, (25712), 10865 states have call successors, (10865), 2814 states have call predecessors, (10865), 2757 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-22 02:44:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33557 states to 33557 states and 47496 transitions. [2022-11-22 02:44:14,459 INFO L78 Accepts]: Start accepts. Automaton has 33557 states and 47496 transitions. Word has length 161 [2022-11-22 02:44:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:14,461 INFO L495 AbstractCegarLoop]: Abstraction has 33557 states and 47496 transitions. [2022-11-22 02:44:14,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:44:14,461 INFO L276 IsEmpty]: Start isEmpty. Operand 33557 states and 47496 transitions. [2022-11-22 02:44:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-22 02:44:14,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:14,465 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:44:14,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:44:14,466 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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)] === [2022-11-22 02:44:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:14,466 INFO L85 PathProgramCache]: Analyzing trace with hash 543483731, now seen corresponding path program 1 times [2022-11-22 02:44:14,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:14,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863040914] [2022-11-22 02:44:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:14,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-22 02:44:14,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:14,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863040914] [2022-11-22 02:44:14,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863040914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:14,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:14,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453259296] [2022-11-22 02:44:14,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:14,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:14,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:14,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:14,841 INFO L87 Difference]: Start difference. First operand 33557 states and 47496 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:44:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:20,769 INFO L93 Difference]: Finished difference Result 33563 states and 47501 transitions. [2022-11-22 02:44:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:20,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2022-11-22 02:44:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:20,884 INFO L225 Difference]: With dead ends: 33563 [2022-11-22 02:44:20,884 INFO L226 Difference]: Without dead ends: 33561 [2022-11-22 02:44:20,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:44:20,896 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1634 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:20,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 02:44:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33561 states. [2022-11-22 02:44:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33561 to 33561. [2022-11-22 02:44:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33561 states, 19935 states have (on average 1.289942312515676) internal successors, (25715), 20763 states have internal predecessors, (25715), 10865 states have call successors, (10865), 2815 states have call predecessors, (10865), 2758 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-22 02:44:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33561 states to 33561 states and 47499 transitions. [2022-11-22 02:44:23,088 INFO L78 Accepts]: Start accepts. Automaton has 33561 states and 47499 transitions. Word has length 166 [2022-11-22 02:44:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:23,088 INFO L495 AbstractCegarLoop]: Abstraction has 33561 states and 47499 transitions. [2022-11-22 02:44:23,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:44:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 33561 states and 47499 transitions. [2022-11-22 02:44:23,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-22 02:44:23,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:23,092 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:44:23,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:44:23,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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)] === [2022-11-22 02:44:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:23,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1947263957, now seen corresponding path program 1 times [2022-11-22 02:44:23,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:23,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146343717] [2022-11-22 02:44:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:23,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-11-22 02:44:23,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:23,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146343717] [2022-11-22 02:44:23,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146343717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:23,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:23,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:23,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551277296] [2022-11-22 02:44:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:23,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:23,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:23,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:23,469 INFO L87 Difference]: Start difference. First operand 33561 states and 47499 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 02:44:25,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:29,375 INFO L93 Difference]: Finished difference Result 33567 states and 47504 transitions. [2022-11-22 02:44:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:29,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2022-11-22 02:44:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:29,479 INFO L225 Difference]: With dead ends: 33567 [2022-11-22 02:44:29,479 INFO L226 Difference]: Without dead ends: 33565 [2022-11-22 02:44:29,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:44:29,491 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1633 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:29,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 02:44:29,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33565 states. [2022-11-22 02:44:31,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33565 to 33565. [2022-11-22 02:44:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33565 states, 19938 states have (on average 1.2898986859263717) internal successors, (25718), 20766 states have internal predecessors, (25718), 10865 states have call successors, (10865), 2816 states have call predecessors, (10865), 2759 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-22 02:44:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33565 states to 33565 states and 47502 transitions. [2022-11-22 02:44:31,658 INFO L78 Accepts]: Start accepts. Automaton has 33565 states and 47502 transitions. Word has length 175 [2022-11-22 02:44:31,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:31,659 INFO L495 AbstractCegarLoop]: Abstraction has 33565 states and 47502 transitions. [2022-11-22 02:44:31,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 02:44:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 33565 states and 47502 transitions. [2022-11-22 02:44:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-22 02:44:31,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:31,662 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:44:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:44:31,662 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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)] === [2022-11-22 02:44:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash 307897843, now seen corresponding path program 1 times [2022-11-22 02:44:31,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:31,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871429368] [2022-11-22 02:44:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-22 02:44:32,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:32,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871429368] [2022-11-22 02:44:32,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871429368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:32,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:32,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207397499] [2022-11-22 02:44:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:32,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:32,082 INFO L87 Difference]: Start difference. First operand 33565 states and 47502 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:44:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:38,340 INFO L93 Difference]: Finished difference Result 33571 states and 47507 transitions. [2022-11-22 02:44:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 176 [2022-11-22 02:44:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:38,459 INFO L225 Difference]: With dead ends: 33571 [2022-11-22 02:44:38,459 INFO L226 Difference]: Without dead ends: 33569 [2022-11-22 02:44:38,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:44:38,474 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1634 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:38,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-22 02:44:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33569 states.