./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-uli526x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI --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 b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 --- 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-5e519f3 [2022-11-03 03:28:08,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:28:08,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:28:08,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:28:08,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:28:08,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:28:08,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:28:08,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:28:08,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:28:08,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:28:08,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:28:08,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:28:08,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:28:08,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:28:08,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:28:08,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:28:09,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:28:09,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:28:09,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:28:09,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:28:09,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:28:09,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:28:09,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:28:09,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:28:09,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:28:09,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:28:09,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:28:09,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:28:09,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:28:09,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:28:09,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:28:09,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:28:09,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:28:09,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:28:09,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:28:09,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:28:09,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:28:09,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:28:09,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:28:09,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:28:09,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:28:09,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:28:09,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:28:09,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:28:09,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:28:09,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:28:09,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:28:09,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:28:09,084 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:28:09,085 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:28:09,085 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:28:09,085 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:28:09,086 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:28:09,086 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:28:09,087 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:28:09,087 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:28:09,087 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:28:09,087 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:28:09,088 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:28:09,088 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:28:09,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:28:09,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:28:09,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:28:09,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:28:09,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:28:09,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:28:09,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:28:09,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:28:09,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:28:09,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:28:09,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:28:09,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:09,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:28:09,092 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:28:09,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:28:09,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:28:09,092 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:28:09,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:28:09,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:28:09,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:28:09,093 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_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2022-11-03 03:28:09,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:28:09,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:28:09,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:28:09,475 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:28:09,476 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:28:09,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-03 03:28:09,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/data/3a81bc367/a87b821d4e964147b88d7a7a79d5b788/FLAG9091ad05f [2022-11-03 03:28:10,572 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:28:10,575 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-03 03:28:10,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/data/3a81bc367/a87b821d4e964147b88d7a7a79d5b788/FLAG9091ad05f [2022-11-03 03:28:10,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/data/3a81bc367/a87b821d4e964147b88d7a7a79d5b788 [2022-11-03 03:28:10,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:28:10,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:28:10,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:10,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:28:10,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:28:10,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d8f636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:10, skipping insertion in model container [2022-11-03 03:28:10,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:10" (1/1) ... [2022-11-03 03:28:10,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:28:11,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:28:13,847 WARN L230 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_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2022-11-03 03:28:13,852 WARN L230 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_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2022-11-03 03:28:13,860 WARN L230 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_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2022-11-03 03:28:13,861 WARN L230 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_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2022-11-03 03:28:13,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:13,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:28:14,452 WARN L230 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_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2022-11-03 03:28:14,453 WARN L230 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_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2022-11-03 03:28:14,454 WARN L230 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_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2022-11-03 03:28:14,454 WARN L230 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_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2022-11-03 03:28:14,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:14,653 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:28:14,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14 WrapperNode [2022-11-03 03:28:14,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:14,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:14,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:28:14,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:28:14,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:14,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:14,958 INFO L138 Inliner]: procedures = 412, calls = 1642, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4077 [2022-11-03 03:28:14,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:14,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:28:14,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:28:14,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:28:14,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:14,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:14,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:14,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:15,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:15,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:15,231 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:15,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:15,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:28:15,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:28:15,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:28:15,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:28:15,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (1/1) ... [2022-11-03 03:28:15,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:15,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:15,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:28:15,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8aadd25-95f6-43ff-ad9e-5c1b13e473c5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:28:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:28:15,373 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:28:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:28:15,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:28:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 03:28:15,374 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 03:28:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:28:15,374 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:28:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:28:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:28:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:28:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:28:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:28:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:28:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-03 03:28:15,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-03 03:28:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 03:28:15,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 03:28:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 03:28:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 03:28:15,377 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-03 03:28:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-03 03:28:15,377 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_poll [2022-11-03 03:28:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_poll [2022-11-03 03:28:15,378 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:28:15,378 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:28:15,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:28:15,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:28:15,378 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:28:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:28:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 03:28:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 03:28:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:28:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:28:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:28:15,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:28:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-03 03:28:15,380 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-03 03:28:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:28:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_stop [2022-11-03 03:28:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_stop [2022-11-03 03:28:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:28:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:28:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:28:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:28:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:28:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:28:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:28:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:28:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_set_filter_mode [2022-11-03 03:28:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_set_filter_mode [2022-11-03 03:28:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2022-11-03 03:28:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2022-11-03 03:28:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:28:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2022-11-03 03:28:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2022-11-03 03:28:15,384 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:28:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:28:15,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:28:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:28:15,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 03:28:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 03:28:15,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:28:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:28:15,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:28:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:28:15,385 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 03:28:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 03:28:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:28:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:28:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2022-11-03 03:28:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2022-11-03 03:28:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:28:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:28:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reset_prepare [2022-11-03 03:28:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reset_prepare [2022-11-03 03:28:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:28:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:28:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:28:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:28:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:28:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:28:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2022-11-03 03:28:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2022-11-03 03:28:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:28:15,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:28:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:28:15,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:28:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:28:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:28:15,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:28:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 03:28:15,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 03:28:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:28:15,390 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:28:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:28:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:28:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:28:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:28:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-03 03:28:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-03 03:28:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:28:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:28:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reuse_skb [2022-11-03 03:28:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reuse_skb [2022-11-03 03:28:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_open [2022-11-03 03:28:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_open [2022-11-03 03:28:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:28:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:28:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:28:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:28:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:28:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:28:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:28:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:28:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_uli526x_board_info [2022-11-03 03:28:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_uli526x_board_info [2022-11-03 03:28:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 03:28:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 03:28:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 03:28:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 03:28:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 03:28:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 03:28:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:28:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:28:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 03:28:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 03:28:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2022-11-03 03:28:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2022-11-03 03:28:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2022-11-03 03:28:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2022-11-03 03:28:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:28:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:28:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:28:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 03:28:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 03:28:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:28:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 03:28:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 03:28:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:28:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:28:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:28:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:28:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:28:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_resume [2022-11-03 03:28:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_resume [2022-11-03 03:28:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:28:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:28:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_interrupt [2022-11-03 03:28:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_interrupt [2022-11-03 03:28:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2022-11-03 03:28:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2022-11-03 03:28:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_remove_one [2022-11-03 03:28:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_remove_one [2022-11-03 03:28:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2022-11-03 03:28:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2022-11-03 03:28:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:28:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:28:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:28:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2022-11-03 03:28:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2022-11-03 03:28:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_free_rxbuffer [2022-11-03 03:28:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_free_rxbuffer [2022-11-03 03:28:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:28:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:28:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 03:28:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 03:28:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 03:28:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 03:28:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_init [2022-11-03 03:28:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_init [2022-11-03 03:28:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:28:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:28:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:28:16,226 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:28:16,230 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:28:16,678 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:28:19,248 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:28:19,494 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:28:20,708 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:28:20,709 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:28:20,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:20 BoogieIcfgContainer [2022-11-03 03:28:20,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:28:20,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:28:20,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:28:20,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:28:20,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:28:10" (1/3) ... [2022-11-03 03:28:20,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7785fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:20, skipping insertion in model container [2022-11-03 03:28:20,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:14" (2/3) ... [2022-11-03 03:28:20,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7785fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:20, skipping insertion in model container [2022-11-03 03:28:20,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:20" (3/3) ... [2022-11-03 03:28:20,723 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-03 03:28:20,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:28:20,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:28:20,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:28:20,825 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;@480f5c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:28:20,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:28:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 1067 states, 596 states have (on average 1.2953020134228188) internal successors, (772), 619 states have internal predecessors, (772), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) [2022-11-03 03:28:20,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 03:28:20,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:20,855 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:20,856 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)] === [2022-11-03 03:28:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash 827769766, now seen corresponding path program 1 times [2022-11-03 03:28:20,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:20,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430735456] [2022-11-03 03:28:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:20,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 03:28:21,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:21,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430735456] [2022-11-03 03:28:21,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430735456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:21,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:21,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:21,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181897059] [2022-11-03 03:28:21,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:21,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:21,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:21,572 INFO L87 Difference]: Start difference. First operand has 1067 states, 596 states have (on average 1.2953020134228188) internal successors, (772), 619 states have internal predecessors, (772), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) 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, (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) [2022-11-03 03:28:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:23,999 INFO L93 Difference]: Finished difference Result 3082 states and 4527 transitions. [2022-11-03 03:28:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:24,002 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, (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 111 [2022-11-03 03:28:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:24,033 INFO L225 Difference]: With dead ends: 3082 [2022-11-03 03:28:24,034 INFO L226 Difference]: Without dead ends: 2024 [2022-11-03 03:28:24,049 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 [2022-11-03 03:28:24,053 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1427 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:24,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 2918 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 03:28:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2022-11-03 03:28:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2020. [2022-11-03 03:28:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1139 states have (on average 1.2853380158033363) internal successors, (1464), 1184 states have internal predecessors, (1464), 726 states have call successors, (726), 153 states have call predecessors, (726), 152 states have return successors, (722), 710 states have call predecessors, (722), 722 states have call successors, (722) [2022-11-03 03:28:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2912 transitions. [2022-11-03 03:28:24,318 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2912 transitions. Word has length 111 [2022-11-03 03:28:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:24,319 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2912 transitions. [2022-11-03 03:28:24,320 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, (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) [2022-11-03 03:28:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2912 transitions. [2022-11-03 03:28:24,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 03:28:24,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:24,336 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:28:24,336 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)] === [2022-11-03 03:28:24,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash 669329599, now seen corresponding path program 1 times [2022-11-03 03:28:24,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:24,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451811772] [2022-11-03 03:28:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 03:28:24,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:24,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451811772] [2022-11-03 03:28:24,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451811772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:24,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:24,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:24,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114412397] [2022-11-03 03:28:24,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:24,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:24,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:24,651 INFO L87 Difference]: Start difference. First operand 2020 states and 2912 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 03:28:26,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:26,937 INFO L93 Difference]: Finished difference Result 5958 states and 8596 transitions. [2022-11-03 03:28:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:26,938 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-11-03 03:28:26,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:26,973 INFO L225 Difference]: With dead ends: 5958 [2022-11-03 03:28:26,974 INFO L226 Difference]: Without dead ends: 3957 [2022-11-03 03:28:26,988 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 [2022-11-03 03:28:26,990 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 1470 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:26,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 2914 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 03:28:26,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2022-11-03 03:28:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3927. [2022-11-03 03:28:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 2228 states have (on average 1.2885996409335727) internal successors, (2871), 2322 states have internal predecessors, (2871), 1397 states have call successors, (1397), 304 states have call predecessors, (1397), 299 states have return successors, (1399), 1356 states have call predecessors, (1399), 1393 states have call successors, (1399) [2022-11-03 03:28:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5667 transitions. [2022-11-03 03:28:27,300 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5667 transitions. Word has length 115 [2022-11-03 03:28:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:27,301 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 5667 transitions. [2022-11-03 03:28:27,301 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 03:28:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5667 transitions. [2022-11-03 03:28:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 03:28:27,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:27,304 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:27,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:28:27,305 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)] === [2022-11-03 03:28:27,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:27,306 INFO L85 PathProgramCache]: Analyzing trace with hash -310781110, now seen corresponding path program 1 times [2022-11-03 03:28:27,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:27,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486450868] [2022-11-03 03:28:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:27,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 03:28:27,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:27,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486450868] [2022-11-03 03:28:27,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486450868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:27,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:27,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651920514] [2022-11-03 03:28:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:27,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:27,529 INFO L87 Difference]: Start difference. First operand 3927 states and 5667 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 03:28:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:29,963 INFO L93 Difference]: Finished difference Result 11395 states and 16413 transitions. [2022-11-03 03:28:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:29,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-11-03 03:28:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:30,017 INFO L225 Difference]: With dead ends: 11395 [2022-11-03 03:28:30,017 INFO L226 Difference]: Without dead ends: 7487 [2022-11-03 03:28:30,040 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 [2022-11-03 03:28:30,042 INFO L413 NwaCegarLoop]: 1706 mSDtfsCounter, 1380 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:30,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 2955 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 03:28:30,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7487 states. [2022-11-03 03:28:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7487 to 7453. [2022-11-03 03:28:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7453 states, 4238 states have (on average 1.2890514393581878) internal successors, (5463), 4424 states have internal predecessors, (5463), 2627 states have call successors, (2627), 598 states have call predecessors, (2627), 585 states have return successors, (2637), 2538 states have call predecessors, (2637), 2623 states have call successors, (2637) [2022-11-03 03:28:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 10727 transitions. [2022-11-03 03:28:30,566 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 10727 transitions. Word has length 115 [2022-11-03 03:28:30,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:30,568 INFO L495 AbstractCegarLoop]: Abstraction has 7453 states and 10727 transitions. [2022-11-03 03:28:30,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 03:28:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 10727 transitions. [2022-11-03 03:28:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 03:28:30,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:30,572 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:30,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:28:30,573 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)] === [2022-11-03 03:28:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1802176668, now seen corresponding path program 1 times [2022-11-03 03:28:30,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:30,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125427245] [2022-11-03 03:28:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:30,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 03:28:31,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:31,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125427245] [2022-11-03 03:28:31,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125427245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:31,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:31,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:28:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545494696] [2022-11-03 03:28:31,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:31,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:28:31,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:28:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:28:31,161 INFO L87 Difference]: Start difference. First operand 7453 states and 10727 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 03:28:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:37,067 INFO L93 Difference]: Finished difference Result 16965 states and 24267 transitions. [2022-11-03 03:28:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:28:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2022-11-03 03:28:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:37,206 INFO L225 Difference]: With dead ends: 16965 [2022-11-03 03:28:37,207 INFO L226 Difference]: Without dead ends: 9531 [2022-11-03 03:28:37,248 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 [2022-11-03 03:28:37,253 INFO L413 NwaCegarLoop]: 1878 mSDtfsCounter, 2658 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:37,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2735 Valid, 4689 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-03 03:28:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9531 states. [2022-11-03 03:28:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9531 to 9459. [2022-11-03 03:28:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9459 states, 5567 states have (on average 1.2927968385126638) internal successors, (7197), 5795 states have internal predecessors, (7197), 3090 states have call successors, (3090), 820 states have call predecessors, (3090), 799 states have return successors, (3093), 2963 states have call predecessors, (3093), 3086 states have call successors, (3093) [2022-11-03 03:28:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 13380 transitions. [2022-11-03 03:28:38,028 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 13380 transitions. Word has length 118 [2022-11-03 03:28:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:38,030 INFO L495 AbstractCegarLoop]: Abstraction has 9459 states and 13380 transitions. [2022-11-03 03:28:38,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 03:28:38,031 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 13380 transitions. [2022-11-03 03:28:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 03:28:38,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:38,033 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:38,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:28:38,035 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)] === [2022-11-03 03:28:38,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash 478900414, now seen corresponding path program 1 times [2022-11-03 03:28:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:38,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26038503] [2022-11-03 03:28:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:38,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 03:28:38,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:38,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26038503] [2022-11-03 03:28:38,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26038503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:38,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:38,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:38,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140718743] [2022-11-03 03:28:38,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:38,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:38,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:38,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:38,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:38,247 INFO L87 Difference]: Start difference. First operand 9459 states and 13380 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (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) [2022-11-03 03:28:40,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:40,752 INFO L93 Difference]: Finished difference Result 24861 states and 35112 transitions. [2022-11-03 03:28:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:40,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 121 [2022-11-03 03:28:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:40,850 INFO L225 Difference]: With dead ends: 24861 [2022-11-03 03:28:40,850 INFO L226 Difference]: Without dead ends: 15421 [2022-11-03 03:28:40,898 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 [2022-11-03 03:28:40,899 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 1337 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:40,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 2876 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 03:28:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15421 states. [2022-11-03 03:28:41,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15421 to 15389. [2022-11-03 03:28:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 8959 states have (on average 1.2782676638017636) internal successors, (11452), 9331 states have internal predecessors, (11452), 5093 states have call successors, (5093), 1377 states have call predecessors, (5093), 1334 states have return successors, (5104), 4859 states have call predecessors, (5104), 5089 states have call successors, (5104) [2022-11-03 03:28:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 21649 transitions. [2022-11-03 03:28:41,824 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 21649 transitions. Word has length 121 [2022-11-03 03:28:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:41,825 INFO L495 AbstractCegarLoop]: Abstraction has 15389 states and 21649 transitions. [2022-11-03 03:28:41,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-11-03 03:28:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 21649 transitions. [2022-11-03 03:28:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 03:28:41,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:41,828 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 03:28:41,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:28:41,829 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)] === [2022-11-03 03:28:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash 755063652, now seen corresponding path program 1 times [2022-11-03 03:28:41,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:41,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608027290] [2022-11-03 03:28:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-03 03:28:42,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:42,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608027290] [2022-11-03 03:28:42,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608027290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:42,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:42,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407062882] [2022-11-03 03:28:42,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:42,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:42,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:42,053 INFO L87 Difference]: Start difference. First operand 15389 states and 21649 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 03:28:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:45,531 INFO L93 Difference]: Finished difference Result 45249 states and 63699 transitions. [2022-11-03 03:28:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2022-11-03 03:28:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:45,723 INFO L225 Difference]: With dead ends: 45249 [2022-11-03 03:28:45,724 INFO L226 Difference]: Without dead ends: 29879 [2022-11-03 03:28:45,805 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 [2022-11-03 03:28:45,807 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1477 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:45,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 3023 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 03:28:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29879 states. [2022-11-03 03:28:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29879 to 29805. [2022-11-03 03:28:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29805 states, 17331 states have (on average 1.2785759621487507) internal successors, (22159), 18097 states have internal predecessors, (22159), 9880 states have call successors, (9880), 2676 states have call predecessors, (9880), 2591 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-03 03:28:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29805 states to 29805 states and 41945 transitions. [2022-11-03 03:28:47,983 INFO L78 Accepts]: Start accepts. Automaton has 29805 states and 41945 transitions. Word has length 133 [2022-11-03 03:28:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:47,984 INFO L495 AbstractCegarLoop]: Abstraction has 29805 states and 41945 transitions. [2022-11-03 03:28:47,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 03:28:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 29805 states and 41945 transitions. [2022-11-03 03:28:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-03 03:28:47,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:47,987 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 03:28:47,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:28:47,988 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)] === [2022-11-03 03:28:47,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:47,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1478331561, now seen corresponding path program 1 times [2022-11-03 03:28:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:47,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619818185] [2022-11-03 03:28:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-03 03:28:48,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:48,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619818185] [2022-11-03 03:28:48,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619818185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:48,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:48,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:48,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66316745] [2022-11-03 03:28:48,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:48,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:48,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:48,478 INFO L87 Difference]: Start difference. First operand 29805 states and 41945 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 03:28:51,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:51,504 INFO L93 Difference]: Finished difference Result 59497 states and 83762 transitions. [2022-11-03 03:28:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:51,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2022-11-03 03:28:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:51,650 INFO L225 Difference]: With dead ends: 59497 [2022-11-03 03:28:51,651 INFO L226 Difference]: Without dead ends: 29757 [2022-11-03 03:28:51,749 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 [2022-11-03 03:28:51,751 INFO L413 NwaCegarLoop]: 1280 mSDtfsCounter, 1485 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:51,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1280 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 03:28:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29757 states. [2022-11-03 03:28:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29757 to 29757. [2022-11-03 03:28:53,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29757 states, 17283 states have (on average 1.2682404675114274) internal successors, (21919), 18049 states have internal predecessors, (21919), 9880 states have call successors, (9880), 2676 states have call predecessors, (9880), 2591 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-03 03:28:53,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29757 states to 29757 states and 41705 transitions. [2022-11-03 03:28:53,853 INFO L78 Accepts]: Start accepts. Automaton has 29757 states and 41705 transitions. Word has length 156 [2022-11-03 03:28:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:53,854 INFO L495 AbstractCegarLoop]: Abstraction has 29757 states and 41705 transitions. [2022-11-03 03:28:53,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 03:28:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 29757 states and 41705 transitions. [2022-11-03 03:28:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 03:28:53,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:53,857 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 03:28:53,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:28:53,857 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)] === [2022-11-03 03:28:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1624308643, now seen corresponding path program 1 times [2022-11-03 03:28:53,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:53,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143243468] [2022-11-03 03:28:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:53,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-03 03:28:54,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:54,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143243468] [2022-11-03 03:28:54,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143243468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:54,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:54,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:28:54,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343654250] [2022-11-03 03:28:54,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:54,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:28:54,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:54,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:28:54,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:28:54,309 INFO L87 Difference]: Start difference. First operand 29757 states and 41705 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) [2022-11-03 03:28:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:59,114 INFO L93 Difference]: Finished difference Result 29763 states and 41710 transitions. [2022-11-03 03:28:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:28:59,115 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 158 [2022-11-03 03:28:59,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:59,288 INFO L225 Difference]: With dead ends: 29763 [2022-11-03 03:28:59,289 INFO L226 Difference]: Without dead ends: 29761 [2022-11-03 03:28:59,306 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 [2022-11-03 03:28:59,307 INFO L413 NwaCegarLoop]: 1280 mSDtfsCounter, 1463 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 3826 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:59,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 3826 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:28:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29761 states. [2022-11-03 03:29:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29761 to 29761. [2022-11-03 03:29:01,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29761 states, 17286 states have (on average 1.2681939141501792) internal successors, (21922), 18052 states have internal predecessors, (21922), 9880 states have call successors, (9880), 2677 states have call predecessors, (9880), 2592 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-03 03:29:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29761 states to 29761 states and 41708 transitions. [2022-11-03 03:29:01,554 INFO L78 Accepts]: Start accepts. Automaton has 29761 states and 41708 transitions. Word has length 158 [2022-11-03 03:29:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:01,559 INFO L495 AbstractCegarLoop]: Abstraction has 29761 states and 41708 transitions. [2022-11-03 03:29:01,559 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) [2022-11-03 03:29:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 29761 states and 41708 transitions. [2022-11-03 03:29:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 03:29:01,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:01,562 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 03:29:01,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:29:01,563 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)] === [2022-11-03 03:29:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash -501763627, now seen corresponding path program 1 times [2022-11-03 03:29:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:01,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852216971] [2022-11-03 03:29:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-11-03 03:29:01,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:01,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852216971] [2022-11-03 03:29:01,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852216971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:01,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:01,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:29:01,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015593107] [2022-11-03 03:29:01,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:01,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:01,985 INFO L87 Difference]: Start difference. First operand 29761 states and 41708 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-03 03:29:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:06,672 INFO L93 Difference]: Finished difference Result 29767 states and 41713 transitions. [2022-11-03 03:29:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:29:06,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 [2022-11-03 03:29:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:06,814 INFO L225 Difference]: With dead ends: 29767 [2022-11-03 03:29:06,814 INFO L226 Difference]: Without dead ends: 29765 [2022-11-03 03:29:06,831 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 [2022-11-03 03:29:06,832 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:06,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 03:29:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29765 states. [2022-11-03 03:29:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29765 to 29765. [2022-11-03 03:29:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29765 states, 17289 states have (on average 1.2681473769448783) internal successors, (21925), 18055 states have internal predecessors, (21925), 9880 states have call successors, (9880), 2678 states have call predecessors, (9880), 2593 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-03 03:29:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29765 states to 29765 states and 41711 transitions. [2022-11-03 03:29:08,700 INFO L78 Accepts]: Start accepts. Automaton has 29765 states and 41711 transitions. Word has length 166 [2022-11-03 03:29:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:08,701 INFO L495 AbstractCegarLoop]: Abstraction has 29765 states and 41711 transitions. [2022-11-03 03:29:08,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-03 03:29:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 29765 states and 41711 transitions. [2022-11-03 03:29:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 03:29:08,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:08,705 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1] [2022-11-03 03:29:08,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:29:08,705 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)] === [2022-11-03 03:29:08,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:08,706 INFO L85 PathProgramCache]: Analyzing trace with hash -388277055, now seen corresponding path program 1 times [2022-11-03 03:29:08,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:08,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538654533] [2022-11-03 03:29:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:08,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-11-03 03:29:09,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:09,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538654533] [2022-11-03 03:29:09,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538654533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:09,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:09,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:29:09,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070602852] [2022-11-03 03:29:09,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:09,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:09,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:09,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:09,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:09,115 INFO L87 Difference]: Start difference. First operand 29765 states and 41711 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 03:29:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:13,337 INFO L93 Difference]: Finished difference Result 29771 states and 41716 transitions. [2022-11-03 03:29:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:29:13,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 171 [2022-11-03 03:29:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:13,449 INFO L225 Difference]: With dead ends: 29771 [2022-11-03 03:29:13,450 INFO L226 Difference]: Without dead ends: 29769 [2022-11-03 03:29:13,464 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 [2022-11-03 03:29:13,465 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:13,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 03:29:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29769 states. [2022-11-03 03:29:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29769 to 29769. [2022-11-03 03:29:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29769 states, 17292 states have (on average 1.2681008558871154) internal successors, (21928), 18058 states have internal predecessors, (21928), 9880 states have call successors, (9880), 2679 states have call predecessors, (9880), 2594 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-03 03:29:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29769 states to 29769 states and 41714 transitions. [2022-11-03 03:29:15,255 INFO L78 Accepts]: Start accepts. Automaton has 29769 states and 41714 transitions. Word has length 171 [2022-11-03 03:29:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:15,256 INFO L495 AbstractCegarLoop]: Abstraction has 29769 states and 41714 transitions. [2022-11-03 03:29:15,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 03:29:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 29769 states and 41714 transitions. [2022-11-03 03:29:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-03 03:29:15,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:15,261 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 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, 1] [2022-11-03 03:29:15,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:29:15,261 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)] === [2022-11-03 03:29:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:15,262 INFO L85 PathProgramCache]: Analyzing trace with hash 88847854, now seen corresponding path program 1 times [2022-11-03 03:29:15,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:15,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25552238] [2022-11-03 03:29:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:15,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2022-11-03 03:29:15,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:15,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25552238] [2022-11-03 03:29:15,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25552238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:15,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:15,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:29:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563383387] [2022-11-03 03:29:15,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:15,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:15,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:15,648 INFO L87 Difference]: Start difference. First operand 29769 states and 41714 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-03 03:29:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:19,852 INFO L93 Difference]: Finished difference Result 29775 states and 41719 transitions. [2022-11-03 03:29:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:29:19,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 177 [2022-11-03 03:29:19,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:19,972 INFO L225 Difference]: With dead ends: 29775 [2022-11-03 03:29:19,972 INFO L226 Difference]: Without dead ends: 29773 [2022-11-03 03:29:19,988 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 [2022-11-03 03:29:19,989 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:19,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 03:29:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29773 states. [2022-11-03 03:29:21,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29773 to 29773. [2022-11-03 03:29:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29773 states, 17295 states have (on average 1.268054350968488) internal successors, (21931), 18061 states have internal predecessors, (21931), 9880 states have call successors, (9880), 2680 states have call predecessors, (9880), 2595 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-03 03:29:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29773 states to 29773 states and 41717 transitions. [2022-11-03 03:29:21,973 INFO L78 Accepts]: Start accepts. Automaton has 29773 states and 41717 transitions. Word has length 177 [2022-11-03 03:29:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:21,974 INFO L495 AbstractCegarLoop]: Abstraction has 29773 states and 41717 transitions. [2022-11-03 03:29:21,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-03 03:29:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 29773 states and 41717 transitions. [2022-11-03 03:29:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 03:29:21,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:21,979 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 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, 1, 1, 1] [2022-11-03 03:29:21,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:29:21,980 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)] === [2022-11-03 03:29:21,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1536348216, now seen corresponding path program 1 times [2022-11-03 03:29:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:21,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462134938] [2022-11-03 03:29:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:21,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-03 03:29:22,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:22,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462134938] [2022-11-03 03:29:22,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462134938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:22,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:22,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:29:22,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250564662] [2022-11-03 03:29:22,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:22,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:22,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:22,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:22,354 INFO L87 Difference]: Start difference. First operand 29773 states and 41717 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-03 03:29:26,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:26,991 INFO L93 Difference]: Finished difference Result 29779 states and 41722 transitions. [2022-11-03 03:29:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:29:26,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 182 [2022-11-03 03:29:26,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:27,124 INFO L225 Difference]: With dead ends: 29779 [2022-11-03 03:29:27,124 INFO L226 Difference]: Without dead ends: 29777 [2022-11-03 03:29:27,139 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 [2022-11-03 03:29:27,140 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:27,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 03:29:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29777 states. [2022-11-03 03:29:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29777 to 29777. [2022-11-03 03:29:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29777 states, 17298 states have (on average 1.268007862180599) internal successors, (21934), 18064 states have internal predecessors, (21934), 9880 states have call successors, (9880), 2681 states have call predecessors, (9880), 2596 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-03 03:29:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29777 states to 29777 states and 41720 transitions. [2022-11-03 03:29:29,298 INFO L78 Accepts]: Start accepts. Automaton has 29777 states and 41720 transitions. Word has length 182 [2022-11-03 03:29:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:29,299 INFO L495 AbstractCegarLoop]: Abstraction has 29777 states and 41720 transitions. [2022-11-03 03:29:29,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-03 03:29:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 29777 states and 41720 transitions. [2022-11-03 03:29:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-03 03:29:29,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:29,304 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1] [2022-11-03 03:29:29,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:29:29,304 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)] === [2022-11-03 03:29:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:29,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1080878574, now seen corresponding path program 1 times [2022-11-03 03:29:29,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:29,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200919452] [2022-11-03 03:29:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:29,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-03 03:29:29,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:29,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200919452] [2022-11-03 03:29:29,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200919452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:29,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:29,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:29:29,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912712506] [2022-11-03 03:29:29,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:29,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:29,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:29,707 INFO L87 Difference]: Start difference. First operand 29777 states and 41720 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:29:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:34,312 INFO L93 Difference]: Finished difference Result 29783 states and 41725 transitions. [2022-11-03 03:29:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:29:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 187 [2022-11-03 03:29:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:34,410 INFO L225 Difference]: With dead ends: 29783 [2022-11-03 03:29:34,411 INFO L226 Difference]: Without dead ends: 29781 [2022-11-03 03:29:34,427 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 [2022-11-03 03:29:34,427 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:34,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:29:34,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29781 states. [2022-11-03 03:29:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29781 to 29781. [2022-11-03 03:29:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29781 states, 17301 states have (on average 1.267961389515057) internal successors, (21937), 18067 states have internal predecessors, (21937), 9880 states have call successors, (9880), 2682 states have call predecessors, (9880), 2597 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-03 03:29:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29781 states to 29781 states and 41723 transitions. [2022-11-03 03:29:36,858 INFO L78 Accepts]: Start accepts. Automaton has 29781 states and 41723 transitions. Word has length 187 [2022-11-03 03:29:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:36,859 INFO L495 AbstractCegarLoop]: Abstraction has 29781 states and 41723 transitions. [2022-11-03 03:29:36,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:29:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 29781 states and 41723 transitions. [2022-11-03 03:29:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-03 03:29:36,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:36,865 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:36,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:29:36,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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)] === [2022-11-03 03:29:36,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:36,867 INFO L85 PathProgramCache]: Analyzing trace with hash -296544959, now seen corresponding path program 1 times [2022-11-03 03:29:36,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:36,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720649803] [2022-11-03 03:29:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:36,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-11-03 03:29:37,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:37,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720649803] [2022-11-03 03:29:37,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720649803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:37,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:37,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:29:37,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045476741] [2022-11-03 03:29:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:37,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:37,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:37,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:37,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:37,268 INFO L87 Difference]: Start difference. First operand 29781 states and 41723 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:29:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:41,466 INFO L93 Difference]: Finished difference Result 29787 states and 41728 transitions. [2022-11-03 03:29:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:29:41,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 191 [2022-11-03 03:29:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:41,555 INFO L225 Difference]: With dead ends: 29787 [2022-11-03 03:29:41,555 INFO L226 Difference]: Without dead ends: 29785 [2022-11-03 03:29:41,567 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 [2022-11-03 03:29:41,568 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:41,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 03:29:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29785 states. [2022-11-03 03:29:43,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29785 to 29785. [2022-11-03 03:29:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29785 states, 17304 states have (on average 1.2679149329634767) internal successors, (21940), 18070 states have internal predecessors, (21940), 9880 states have call successors, (9880), 2683 states have call predecessors, (9880), 2598 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-03 03:29:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29785 states to 29785 states and 41726 transitions. [2022-11-03 03:29:43,902 INFO L78 Accepts]: Start accepts. Automaton has 29785 states and 41726 transitions. Word has length 191 [2022-11-03 03:29:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:43,902 INFO L495 AbstractCegarLoop]: Abstraction has 29785 states and 41726 transitions. [2022-11-03 03:29:43,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:29:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 29785 states and 41726 transitions. [2022-11-03 03:29:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-03 03:29:43,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:43,908 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:43,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:29:43,909 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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)] === [2022-11-03 03:29:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:43,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1511922381, now seen corresponding path program 1 times [2022-11-03 03:29:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:43,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570974987] [2022-11-03 03:29:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:43,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2022-11-03 03:29:44,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:44,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570974987] [2022-11-03 03:29:44,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570974987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:44,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:44,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:29:44,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260875766] [2022-11-03 03:29:44,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:44,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:44,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:44,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:44,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:44,571 INFO L87 Difference]: Start difference. First operand 29785 states and 41726 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:29:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:49,521 INFO L93 Difference]: Finished difference Result 32987 states and 45541 transitions. [2022-11-03 03:29:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:29:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 193 [2022-11-03 03:29:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:49,670 INFO L225 Difference]: With dead ends: 32987 [2022-11-03 03:29:49,670 INFO L226 Difference]: Without dead ends: 32985 [2022-11-03 03:29:49,688 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 [2022-11-03 03:29:49,689 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1183 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:49,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 4785 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:29:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32985 states. [2022-11-03 03:29:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32985 to 32985. [2022-11-03 03:29:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32985 states, 18997 states have (on average 1.2575143443701637) internal successors, (23889), 19799 states have internal predecessors, (23889), 10812 states have call successors, (10812), 3258 states have call predecessors, (10812), 3173 states have return successors, (10838), 10313 states have call predecessors, (10838), 10808 states have call successors, (10838) [2022-11-03 03:29:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32985 states to 32985 states and 45539 transitions. [2022-11-03 03:29:52,616 INFO L78 Accepts]: Start accepts. Automaton has 32985 states and 45539 transitions. Word has length 193 [2022-11-03 03:29:52,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:52,616 INFO L495 AbstractCegarLoop]: Abstraction has 32985 states and 45539 transitions. [2022-11-03 03:29:52,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:29:52,617 INFO L276 IsEmpty]: Start isEmpty. Operand 32985 states and 45539 transitions. [2022-11-03 03:29:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-03 03:29:52,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:52,624 INFO L195 NwaCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:52,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:29:52,624 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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)] === [2022-11-03 03:29:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1883418044, now seen corresponding path program 1 times [2022-11-03 03:29:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:52,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313294866] [2022-11-03 03:29:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 03:29:52,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:52,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313294866] [2022-11-03 03:29:52,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313294866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:52,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:52,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:52,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123334283] [2022-11-03 03:29:52,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:52,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:52,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:52,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:52,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:52,846 INFO L87 Difference]: Start difference. First operand 32985 states and 45539 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23)