./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-calxeda-xgmac.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0 --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 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 --- 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-e04fb08 [2022-11-16 19:27:10,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:27:10,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:27:10,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:27:10,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:27:10,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:27:10,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:27:10,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:27:10,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:27:10,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:27:10,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:27:10,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:27:10,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:27:10,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:27:10,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:27:10,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:27:10,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:27:10,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:27:10,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:27:10,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:27:10,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:27:10,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:27:10,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:27:10,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:27:10,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:27:10,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:27:10,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:27:10,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:27:10,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:27:10,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:27:10,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:27:10,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:27:10,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:27:10,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:27:10,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:27:10,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:27:10,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:27:10,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:27:10,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:27:10,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:27:10,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:27:10,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 19:27:10,939 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:27:10,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:27:10,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:27:10,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:27:10,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:27:10,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:27:10,941 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:27:10,942 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:27:10,942 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:27:10,942 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:27:10,942 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:27:10,943 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:27:10,943 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:27:10,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:27:10,943 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:27:10,943 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:27:10,944 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:27:10,944 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:27:10,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:27:10,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:27:10,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:27:10,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:27:10,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:27:10,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:27:10,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:27:10,949 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:27:10,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:27:10,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:27:10,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:27:10,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:27:10,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:27:10,951 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:27:10,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:27:10,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:27:10,952 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:27:10,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:27:10,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:27:10,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:27:10,954 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_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 [2022-11-16 19:27:11,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:27:11,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:27:11,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:27:11,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:27:11,333 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:27:11,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-16 19:27:11,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/data/669923e99/d9f672bfc1ee43eaa6e7b80819e9bc58/FLAG7abd03a59 [2022-11-16 19:27:12,480 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:27:12,481 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-16 19:27:12,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/data/669923e99/d9f672bfc1ee43eaa6e7b80819e9bc58/FLAG7abd03a59 [2022-11-16 19:27:12,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/data/669923e99/d9f672bfc1ee43eaa6e7b80819e9bc58 [2022-11-16 19:27:12,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:27:12,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:27:12,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:27:12,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:27:12,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:27:12,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:27:12" (1/1) ... [2022-11-16 19:27:12,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a2f7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:12, skipping insertion in model container [2022-11-16 19:27:12,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:27:12" (1/1) ... [2022-11-16 19:27:12,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:27:12,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:27:16,219 WARN L229 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_121f97c7-80ff-439a-91e7-bd77a05aae90/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2022-11-16 19:27:16,222 WARN L229 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_121f97c7-80ff-439a-91e7-bd77a05aae90/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2022-11-16 19:27:16,223 WARN L229 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_121f97c7-80ff-439a-91e7-bd77a05aae90/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2022-11-16 19:27:16,224 WARN L229 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_121f97c7-80ff-439a-91e7-bd77a05aae90/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2022-11-16 19:27:16,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:27:16,310 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:27:16,716 WARN L229 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_121f97c7-80ff-439a-91e7-bd77a05aae90/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2022-11-16 19:27:16,717 WARN L229 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_121f97c7-80ff-439a-91e7-bd77a05aae90/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2022-11-16 19:27:16,717 WARN L229 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_121f97c7-80ff-439a-91e7-bd77a05aae90/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2022-11-16 19:27:16,718 WARN L229 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_121f97c7-80ff-439a-91e7-bd77a05aae90/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2022-11-16 19:27:16,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:27:16,999 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:27:17,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16 WrapperNode [2022-11-16 19:27:17,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:27:17,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:27:17,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:27:17,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:27:17,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,344 INFO L138 Inliner]: procedures = 502, calls = 2414, calls flagged for inlining = 253, calls inlined = 226, statements flattened = 5517 [2022-11-16 19:27:17,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:27:17,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:27:17,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:27:17,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:27:17,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:27:17,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:27:17,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:27:17,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:27:17,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (1/1) ... [2022-11-16 19:27:17,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:27:17,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:17,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:27:17,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121f97c7-80ff-439a-91e7-bd77a05aae90/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:27:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-16 19:27:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-16 19:27:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 19:27:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 19:27:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-16 19:27:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-16 19:27:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr [2022-11-16 19:27:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr [2022-11-16 19:27:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-16 19:27:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-16 19:27:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 19:27:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 19:27:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_interrupt [2022-11-16 19:27:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_interrupt [2022-11-16 19:27:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-16 19:27:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-16 19:27:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_rx_refill [2022-11-16 19:27:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_rx_refill [2022-11-16 19:27:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-16 19:27:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-16 19:27:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-16 19:27:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-16 19:27:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-16 19:27:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-16 19:27:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-16 19:27:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-16 19:27:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_poll_controller [2022-11-16 19:27:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_poll_controller [2022-11-16 19:27:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-16 19:27:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-16 19:27:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_mac_addr [2022-11-16 19:27:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_mac_addr [2022-11-16 19:27:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_unlock [2022-11-16 19:27:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_unlock [2022-11-16 19:27:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_tx_timeout [2022-11-16 19:27:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_tx_timeout [2022-11-16 19:27:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-16 19:27:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-16 19:27:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-16 19:27:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-16 19:27:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-16 19:27:17,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-16 19:27:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-16 19:27:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-16 19:27:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:27:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-16 19:27:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-16 19:27:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-16 19:27:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-16 19:27:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-16 19:27:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-16 19:27:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr_and_size [2022-11-16 19:27:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr_and_size [2022-11-16 19:27:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 19:27:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-16 19:27:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-16 19:27:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_probe [2022-11-16 19:27:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_probe [2022-11-16 19:27:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 19:27:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-16 19:27:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-16 19:27:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:27:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_len [2022-11-16 19:27:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_len [2022-11-16 19:27:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-16 19:27:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-16 19:27:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 19:27:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 19:27:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-16 19:27:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-16 19:27:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-16 19:27:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-16 19:27:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_suspend [2022-11-16 19:27:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_suspend [2022-11-16 19:27:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_lock [2022-11-16 19:27:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_lock [2022-11-16 19:27:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_open [2022-11-16 19:27:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_open [2022-11-16 19:27:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_len [2022-11-16 19:27:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_len [2022-11-16 19:27:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-16 19:27:17,739 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-16 19:27:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-16 19:27:17,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-16 19:27:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:27:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-16 19:27:17,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-16 19:27:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-16 19:27:17,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-16 19:27:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-16 19:27:17,740 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-16 19:27:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:27:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_pmt [2022-11-16 19:27:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_pmt [2022-11-16 19:27:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-16 19:27:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-16 19:27:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-16 19:27:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-16 19:27:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:27:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_free_tx_skbufs [2022-11-16 19:27:17,742 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_free_tx_skbufs [2022-11-16 19:27:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-16 19:27:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 19:27:17,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 19:27:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-16 19:27:17,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-16 19:27:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-16 19:27:17,743 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-16 19:27:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-16 19:27:17,743 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-16 19:27:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-16 19:27:17,744 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-16 19:27:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-16 19:27:17,744 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-16 19:27:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-16 19:27:17,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-16 19:27:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2022-11-16 19:27:17,745 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2022-11-16 19:27:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-16 19:27:17,745 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-16 19:27:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-16 19:27:17,745 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-16 19:27:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-16 19:27:17,746 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-16 19:27:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:27:17,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:27:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_disable [2022-11-16 19:27:17,746 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_disable [2022-11-16 19:27:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 19:27:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 19:27:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 19:27:17,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 19:27:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure desc_init_tx_desc [2022-11-16 19:27:17,747 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_init_tx_desc [2022-11-16 19:27:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-16 19:27:17,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-16 19:27:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-16 19:27:17,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-16 19:27:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-16 19:27:17,748 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-16 19:27:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-16 19:27:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-16 19:27:17,749 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-16 19:27:17,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-16 19:27:17,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-16 19:27:17,749 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-16 19:27:17,749 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-16 19:27:17,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 19:27:17,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 19:27:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-16 19:27:17,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-16 19:27:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-16 19:27:17,750 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-16 19:27:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-16 19:27:17,750 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-16 19:27:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_enable [2022-11-16 19:27:17,751 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_enable [2022-11-16 19:27:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-16 19:27:17,751 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-16 19:27:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-16 19:27:17,751 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-16 19:27:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:27:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_stop [2022-11-16 19:27:17,752 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_stop [2022-11-16 19:27:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_tx_owner [2022-11-16 19:27:17,752 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_tx_owner [2022-11-16 19:27:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-16 19:27:17,752 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-16 19:27:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_irq [2022-11-16 19:27:17,753 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_irq [2022-11-16 19:27:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:27:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 19:27:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-16 19:27:17,753 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-16 19:27:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-16 19:27:17,754 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-16 19:27:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-16 19:27:17,754 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-16 19:27:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-16 19:27:17,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-16 19:27:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-16 19:27:17,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-16 19:27:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-16 19:27:17,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-16 19:27:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_flow_ctrl [2022-11-16 19:27:17,755 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_flow_ctrl [2022-11-16 19:27:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-16 19:27:17,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-16 19:27:17,756 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_resume [2022-11-16 19:27:17,756 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_resume [2022-11-16 19:27:17,756 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-16 19:27:17,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-16 19:27:17,756 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-16 19:27:17,756 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-16 19:27:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-16 19:27:17,757 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-16 19:27:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_irq_wake [2022-11-16 19:27:17,757 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_irq_wake [2022-11-16 19:27:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_fs [2022-11-16 19:27:17,757 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_fs [2022-11-16 19:27:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-16 19:27:17,758 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-16 19:27:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_rx_mode [2022-11-16 19:27:17,758 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_rx_mode [2022-11-16 19:27:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-16 19:27:17,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-16 19:27:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 19:27:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 19:27:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:27:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 19:27:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 19:27:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-16 19:27:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-16 19:27:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-16 19:27:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-16 19:27:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-16 19:27:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-16 19:27:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-16 19:27:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-16 19:27:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2022-11-16 19:27:17,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2022-11-16 19:27:17,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-16 19:27:17,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-16 19:27:17,761 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-16 19:27:17,761 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-16 19:27:17,762 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-16 19:27:17,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-16 19:27:17,762 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2022-11-16 19:27:17,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2022-11-16 19:27:17,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-16 19:27:17,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-16 19:27:17,762 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-16 19:27:17,763 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-16 19:27:17,763 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-16 19:27:17,763 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-16 19:27:17,763 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-16 19:27:17,763 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-16 19:27:17,763 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_remove [2022-11-16 19:27:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_remove [2022-11-16 19:27:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:27:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_addr [2022-11-16 19:27:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_addr [2022-11-16 19:27:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-16 19:27:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-16 19:27:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-16 19:27:17,765 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-16 19:27:17,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-16 19:27:17,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-16 19:27:17,765 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_ls [2022-11-16 19:27:17,765 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_ls [2022-11-16 19:27:18,749 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:27:18,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:27:19,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 19:33:47,858 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-16 19:33:47,987 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:33:52,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:33:52,120 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 19:33:52,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:33:52 BoogieIcfgContainer [2022-11-16 19:33:52,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:33:52,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:33:52,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:33:52,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:33:52,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:27:12" (1/3) ... [2022-11-16 19:33:52,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f864ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:33:52, skipping insertion in model container [2022-11-16 19:33:52,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:16" (2/3) ... [2022-11-16 19:33:52,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f864ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:33:52, skipping insertion in model container [2022-11-16 19:33:52,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:33:52" (3/3) ... [2022-11-16 19:33:52,147 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-16 19:33:52,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:33:52,184 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-16 19:33:52,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:33:52,323 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;@18761dde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:33:52,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 19:33:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 1536 states, 890 states have (on average 1.2651685393258427) internal successors, (1126), 911 states have internal predecessors, (1126), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) [2022-11-16 19:33:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-16 19:33:52,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:33:52,356 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:33:52,357 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)] === [2022-11-16 19:33:52,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:33:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1685340790, now seen corresponding path program 1 times [2022-11-16 19:33:52,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:33:52,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057363724] [2022-11-16 19:33:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:33:52,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:33:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:33:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-16 19:33:55,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:33:55,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057363724] [2022-11-16 19:33:55,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057363724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:33:55,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:33:55,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:33:55,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752734342] [2022-11-16 19:33:55,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:33:55,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:33:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:33:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:33:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:33:55,513 INFO L87 Difference]: Start difference. First operand has 1536 states, 890 states have (on average 1.2651685393258427) internal successors, (1126), 911 states have internal predecessors, (1126), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 19:33:57,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:33:59,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:34:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:05,429 INFO L93 Difference]: Finished difference Result 4489 states and 6433 transitions. [2022-11-16 19:34:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:34:05,432 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-16 19:34:05,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:05,483 INFO L225 Difference]: With dead ends: 4489 [2022-11-16 19:34:05,483 INFO L226 Difference]: Without dead ends: 2968 [2022-11-16 19:34:05,500 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 [2022-11-16 19:34:05,503 INFO L413 NwaCegarLoop]: 2330 mSDtfsCounter, 2071 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:34:05,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 4141 Invalid, 668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 664 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-16 19:34:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2022-11-16 19:34:05,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2964. [2022-11-16 19:34:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 1730 states have (on average 1.2595375722543352) internal successors, (2179), 1770 states have internal predecessors, (2179), 1004 states have call successors, (1004), 228 states have call predecessors, (1004), 227 states have return successors, (1001), 991 states have call predecessors, (1001), 1001 states have call successors, (1001) [2022-11-16 19:34:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 4184 transitions. [2022-11-16 19:34:05,797 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 4184 transitions. Word has length 147 [2022-11-16 19:34:05,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:05,799 INFO L495 AbstractCegarLoop]: Abstraction has 2964 states and 4184 transitions. [2022-11-16 19:34:05,799 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 19:34:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 4184 transitions. [2022-11-16 19:34:05,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-16 19:34:05,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:05,808 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:34:05,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:34:05,809 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)] === [2022-11-16 19:34:05,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1571262010, now seen corresponding path program 1 times [2022-11-16 19:34:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:05,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104864062] [2022-11-16 19:34:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:05,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-16 19:34:07,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:34:07,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104864062] [2022-11-16 19:34:07,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104864062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:34:07,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:34:07,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:34:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009389219] [2022-11-16 19:34:07,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:34:07,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:34:07,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:34:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:34:07,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:34:07,458 INFO L87 Difference]: Start difference. First operand 2964 states and 4184 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, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 19:34:09,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:34:13,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:34:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:18,403 INFO L93 Difference]: Finished difference Result 8240 states and 11620 transitions. [2022-11-16 19:34:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:34:18,404 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, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 161 [2022-11-16 19:34:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:18,448 INFO L225 Difference]: With dead ends: 8240 [2022-11-16 19:34:18,448 INFO L226 Difference]: Without dead ends: 5303 [2022-11-16 19:34:18,464 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 [2022-11-16 19:34:18,465 INFO L413 NwaCegarLoop]: 2233 mSDtfsCounter, 1670 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:34:18,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 4000 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 707 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-16 19:34:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5303 states. [2022-11-16 19:34:18,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5303 to 5274. [2022-11-16 19:34:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 3077 states have (on average 1.2512187195320117) internal successors, (3850), 3151 states have internal predecessors, (3850), 1757 states have call successors, (1757), 440 states have call predecessors, (1757), 437 states have return successors, (1822), 1724 states have call predecessors, (1822), 1754 states have call successors, (1822) [2022-11-16 19:34:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 7429 transitions. [2022-11-16 19:34:18,775 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 7429 transitions. Word has length 161 [2022-11-16 19:34:18,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:18,776 INFO L495 AbstractCegarLoop]: Abstraction has 5274 states and 7429 transitions. [2022-11-16 19:34:18,776 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, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 19:34:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 7429 transitions. [2022-11-16 19:34:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-16 19:34:18,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:18,782 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:34:18,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:34:18,783 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)] === [2022-11-16 19:34:18,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:18,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1592392072, now seen corresponding path program 1 times [2022-11-16 19:34:18,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:18,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694982330] [2022-11-16 19:34:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:18,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-16 19:34:20,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:34:20,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694982330] [2022-11-16 19:34:20,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694982330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:34:20,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:34:20,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:34:20,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311267186] [2022-11-16 19:34:20,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:34:20,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:34:20,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:34:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:34:20,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:34:20,455 INFO L87 Difference]: Start difference. First operand 5274 states and 7429 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-16 19:34:22,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:34:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:30,549 INFO L93 Difference]: Finished difference Result 14636 states and 20487 transitions. [2022-11-16 19:34:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:34:30,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2022-11-16 19:34:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:30,623 INFO L225 Difference]: With dead ends: 14636 [2022-11-16 19:34:30,623 INFO L226 Difference]: Without dead ends: 9389 [2022-11-16 19:34:30,653 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 [2022-11-16 19:34:30,654 INFO L413 NwaCegarLoop]: 2655 mSDtfsCounter, 1689 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 4419 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:34:30,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 4419 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 837 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-11-16 19:34:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2022-11-16 19:34:31,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9356. [2022-11-16 19:34:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9356 states, 5429 states have (on average 1.2319027445201696) internal successors, (6688), 5565 states have internal predecessors, (6688), 3095 states have call successors, (3095), 834 states have call predecessors, (3095), 829 states have return successors, (3162), 3032 states have call predecessors, (3162), 3092 states have call successors, (3162) [2022-11-16 19:34:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9356 states to 9356 states and 12945 transitions. [2022-11-16 19:34:31,249 INFO L78 Accepts]: Start accepts. Automaton has 9356 states and 12945 transitions. Word has length 172 [2022-11-16 19:34:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:31,250 INFO L495 AbstractCegarLoop]: Abstraction has 9356 states and 12945 transitions. [2022-11-16 19:34:31,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-16 19:34:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 9356 states and 12945 transitions. [2022-11-16 19:34:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-16 19:34:31,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:31,256 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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] [2022-11-16 19:34:31,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:34:31,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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)] === [2022-11-16 19:34:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash -475487494, now seen corresponding path program 1 times [2022-11-16 19:34:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:31,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197078590] [2022-11-16 19:34:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:31,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-16 19:34:34,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:34:34,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197078590] [2022-11-16 19:34:34,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197078590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:34:34,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:34:34,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:34:34,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307223058] [2022-11-16 19:34:34,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:34:34,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:34:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:34:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:34:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:34:34,212 INFO L87 Difference]: Start difference. First operand 9356 states and 12945 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-16 19:34:36,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:34:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:44,058 INFO L93 Difference]: Finished difference Result 9512 states and 13083 transitions. [2022-11-16 19:34:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:34:44,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 185 [2022-11-16 19:34:44,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:44,139 INFO L225 Difference]: With dead ends: 9512 [2022-11-16 19:34:44,139 INFO L226 Difference]: Without dead ends: 9510 [2022-11-16 19:34:44,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:34:44,148 INFO L413 NwaCegarLoop]: 1835 mSDtfsCounter, 2078 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 5529 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:34:44,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 5529 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1016 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-16 19:34:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9510 states. [2022-11-16 19:34:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9510 to 9508. [2022-11-16 19:34:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9508 states, 5518 states have (on average 1.230699528814788) internal successors, (6791), 5662 states have internal predecessors, (6791), 3111 states have call successors, (3111), 881 states have call predecessors, (3111), 876 states have return successors, (3178), 3048 states have call predecessors, (3178), 3108 states have call successors, (3178) [2022-11-16 19:34:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 13080 transitions. [2022-11-16 19:34:44,989 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 13080 transitions. Word has length 185 [2022-11-16 19:34:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:44,990 INFO L495 AbstractCegarLoop]: Abstraction has 9508 states and 13080 transitions. [2022-11-16 19:34:44,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-16 19:34:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 13080 transitions. [2022-11-16 19:34:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 19:34:44,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:44,998 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 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] [2022-11-16 19:34:44,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:34:44,999 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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)] === [2022-11-16 19:34:44,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:44,999 INFO L85 PathProgramCache]: Analyzing trace with hash 898154610, now seen corresponding path program 1 times [2022-11-16 19:34:45,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:45,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929931802] [2022-11-16 19:34:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:45,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-16 19:34:47,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:34:47,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929931802] [2022-11-16 19:34:47,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929931802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:34:47,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:34:47,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:34:47,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926541112] [2022-11-16 19:34:47,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:34:47,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:34:47,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:34:47,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:34:47,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:34:47,999 INFO L87 Difference]: Start difference. First operand 9508 states and 13080 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-11-16 19:34:50,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:34:58,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:58,429 INFO L93 Difference]: Finished difference Result 9514 states and 13085 transitions. [2022-11-16 19:34:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:34:58,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 190 [2022-11-16 19:34:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:58,485 INFO L225 Difference]: With dead ends: 9514 [2022-11-16 19:34:58,485 INFO L226 Difference]: Without dead ends: 9512 [2022-11-16 19:34:58,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:34:58,492 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:34:58,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2101 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-16 19:34:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2022-11-16 19:34:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 9512. [2022-11-16 19:34:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9512 states, 5521 states have (on average 1.2305741713457707) internal successors, (6794), 5665 states have internal predecessors, (6794), 3111 states have call successors, (3111), 882 states have call predecessors, (3111), 877 states have return successors, (3178), 3048 states have call predecessors, (3178), 3108 states have call successors, (3178) [2022-11-16 19:34:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 13083 transitions. [2022-11-16 19:34:59,139 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 13083 transitions. Word has length 190 [2022-11-16 19:34:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:59,140 INFO L495 AbstractCegarLoop]: Abstraction has 9512 states and 13083 transitions. [2022-11-16 19:34:59,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-11-16 19:34:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 13083 transitions. [2022-11-16 19:34:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-16 19:34:59,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:59,147 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 3, 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] [2022-11-16 19:34:59,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:34:59,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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)] === [2022-11-16 19:34:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1494574522, now seen corresponding path program 1 times [2022-11-16 19:34:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:59,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567329654] [2022-11-16 19:34:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:59,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-16 19:35:01,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:01,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567329654] [2022-11-16 19:35:01,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567329654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:35:01,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:35:01,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:35:01,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067257623] [2022-11-16 19:35:01,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:35:01,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:35:01,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:01,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:35:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:35:01,976 INFO L87 Difference]: Start difference. First operand 9512 states and 13083 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-11-16 19:35:04,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:35:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:35:12,181 INFO L93 Difference]: Finished difference Result 9518 states and 13088 transitions. [2022-11-16 19:35:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:35:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 195 [2022-11-16 19:35:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:35:12,225 INFO L225 Difference]: With dead ends: 9518 [2022-11-16 19:35:12,225 INFO L226 Difference]: Without dead ends: 9516 [2022-11-16 19:35:12,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:35:12,231 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:35:12,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-11-16 19:35:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9516 states. [2022-11-16 19:35:12,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9516 to 9516. [2022-11-16 19:35:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9516 states, 5524 states have (on average 1.2304489500362057) internal successors, (6797), 5668 states have internal predecessors, (6797), 3111 states have call successors, (3111), 883 states have call predecessors, (3111), 878 states have return successors, (3178), 3048 states have call predecessors, (3178), 3108 states have call successors, (3178) [2022-11-16 19:35:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9516 states to 9516 states and 13086 transitions. [2022-11-16 19:35:12,873 INFO L78 Accepts]: Start accepts. Automaton has 9516 states and 13086 transitions. Word has length 195 [2022-11-16 19:35:12,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:35:12,874 INFO L495 AbstractCegarLoop]: Abstraction has 9516 states and 13086 transitions. [2022-11-16 19:35:12,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-11-16 19:35:12,874 INFO L276 IsEmpty]: Start isEmpty. Operand 9516 states and 13086 transitions. [2022-11-16 19:35:12,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-16 19:35:12,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:35:12,880 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:35:12,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:35:12,881 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 19:35:12,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:35:12,881 INFO L85 PathProgramCache]: Analyzing trace with hash 613323240, now seen corresponding path program 1 times [2022-11-16 19:35:12,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:35:12,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022380816] [2022-11-16 19:35:12,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:12,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:35:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2022-11-16 19:35:14,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:14,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022380816] [2022-11-16 19:35:14,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022380816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:35:14,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:35:14,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:35:14,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834006069] [2022-11-16 19:35:14,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:35:14,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:35:14,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:14,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:35:14,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:35:14,423 INFO L87 Difference]: Start difference. First operand 9516 states and 13086 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-16 19:35:16,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:35:19,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:35:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:35:25,889 INFO L93 Difference]: Finished difference Result 18338 states and 25215 transitions. [2022-11-16 19:35:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:35:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 192 [2022-11-16 19:35:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:35:25,927 INFO L225 Difference]: With dead ends: 18338 [2022-11-16 19:35:25,928 INFO L226 Difference]: Without dead ends: 8849 [2022-11-16 19:35:25,960 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 [2022-11-16 19:35:25,961 INFO L413 NwaCegarLoop]: 3388 mSDtfsCounter, 2024 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-16 19:35:25,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 5181 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 964 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-11-16 19:35:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8849 states. [2022-11-16 19:35:26,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8849 to 8809. [2022-11-16 19:35:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8809 states, 5179 states have (on average 1.229194825255841) internal successors, (6366), 5316 states have internal predecessors, (6366), 2819 states have call successors, (2819), 812 states have call predecessors, (2819), 808 states have return successors, (2884), 2757 states have call predecessors, (2884), 2816 states have call successors, (2884) [2022-11-16 19:35:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8809 states to 8809 states and 12069 transitions. [2022-11-16 19:35:26,594 INFO L78 Accepts]: Start accepts. Automaton has 8809 states and 12069 transitions. Word has length 192 [2022-11-16 19:35:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:35:26,595 INFO L495 AbstractCegarLoop]: Abstraction has 8809 states and 12069 transitions. [2022-11-16 19:35:26,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-16 19:35:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8809 states and 12069 transitions. [2022-11-16 19:35:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-16 19:35:26,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:35:26,602 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 4, 3, 3, 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] [2022-11-16 19:35:26,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 19:35:26,602 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)] === [2022-11-16 19:35:26,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:35:26,603 INFO L85 PathProgramCache]: Analyzing trace with hash 169141613, now seen corresponding path program 1 times [2022-11-16 19:35:26,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:35:26,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139188926] [2022-11-16 19:35:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:26,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:35:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-11-16 19:35:29,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:29,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139188926] [2022-11-16 19:35:29,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139188926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:35:29,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:35:29,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:35:29,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091650399] [2022-11-16 19:35:29,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:35:29,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:35:29,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:29,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:35:29,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:35:29,433 INFO L87 Difference]: Start difference. First operand 8809 states and 12069 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-16 19:35:31,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:35:37,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:35:40,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:35:40,718 INFO L93 Difference]: Finished difference Result 10454 states and 14066 transitions. [2022-11-16 19:35:40,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:35:40,719 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 209 [2022-11-16 19:35:40,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:35:40,771 INFO L225 Difference]: With dead ends: 10454 [2022-11-16 19:35:40,771 INFO L226 Difference]: Without dead ends: 10452 [2022-11-16 19:35:40,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:35:40,780 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 1936 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 6191 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:35:40,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 6191 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1095 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2022-11-16 19:35:40,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10452 states. [2022-11-16 19:35:41,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10452 to 10443. [2022-11-16 19:35:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10443 states, 6039 states have (on average 1.214273886405034) internal successors, (7333), 6198 states have internal predecessors, (7333), 3326 states have call successors, (3326), 1076 states have call predecessors, (3326), 1075 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-16 19:35:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10443 states to 10443 states and 14054 transitions. [2022-11-16 19:35:41,696 INFO L78 Accepts]: Start accepts. Automaton has 10443 states and 14054 transitions. Word has length 209 [2022-11-16 19:35:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:35:41,697 INFO L495 AbstractCegarLoop]: Abstraction has 10443 states and 14054 transitions. [2022-11-16 19:35:41,698 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-16 19:35:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 10443 states and 14054 transitions. [2022-11-16 19:35:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-16 19:35:41,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:35:41,703 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 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] [2022-11-16 19:35:41,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 19:35:41,703 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)] === [2022-11-16 19:35:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:35:41,704 INFO L85 PathProgramCache]: Analyzing trace with hash 351234170, now seen corresponding path program 1 times [2022-11-16 19:35:41,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:35:41,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831082580] [2022-11-16 19:35:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:35:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2022-11-16 19:35:44,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:44,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831082580] [2022-11-16 19:35:44,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831082580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:35:44,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:35:44,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:35:44,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223308593] [2022-11-16 19:35:44,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:35:44,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:35:44,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:44,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:35:44,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:35:44,208 INFO L87 Difference]: Start difference. First operand 10443 states and 14054 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-11-16 19:35:46,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:35:53,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:35:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:35:56,030 INFO L93 Difference]: Finished difference Result 10449 states and 14059 transitions. [2022-11-16 19:35:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:35:56,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 205 [2022-11-16 19:35:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:35:56,080 INFO L225 Difference]: With dead ends: 10449 [2022-11-16 19:35:56,080 INFO L226 Difference]: Without dead ends: 10447 [2022-11-16 19:35:56,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:35:56,087 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:35:56,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2022-11-16 19:35:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10447 states. [2022-11-16 19:35:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10447 to 10447. [2022-11-16 19:35:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10447 states, 6042 states have (on average 1.2141674942072163) internal successors, (7336), 6201 states have internal predecessors, (7336), 3326 states have call successors, (3326), 1077 states have call predecessors, (3326), 1076 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-16 19:35:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10447 states to 10447 states and 14057 transitions. [2022-11-16 19:35:56,909 INFO L78 Accepts]: Start accepts. Automaton has 10447 states and 14057 transitions. Word has length 205 [2022-11-16 19:35:56,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:35:56,909 INFO L495 AbstractCegarLoop]: Abstraction has 10447 states and 14057 transitions. [2022-11-16 19:35:56,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-11-16 19:35:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 10447 states and 14057 transitions. [2022-11-16 19:35:56,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-16 19:35:56,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:35:56,915 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 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] [2022-11-16 19:35:56,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 19:35:56,916 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)] === [2022-11-16 19:35:56,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:35:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash -443168270, now seen corresponding path program 1 times [2022-11-16 19:35:56,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:35:56,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945918475] [2022-11-16 19:35:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:56,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:35:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2022-11-16 19:35:59,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:59,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945918475] [2022-11-16 19:35:59,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945918475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:35:59,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:35:59,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:35:59,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363575198] [2022-11-16 19:35:59,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:35:59,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:35:59,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:59,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:35:59,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:35:59,512 INFO L87 Difference]: Start difference. First operand 10447 states and 14057 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-16 19:36:01,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:36:08,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:36:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:36:10,821 INFO L93 Difference]: Finished difference Result 10453 states and 14062 transitions. [2022-11-16 19:36:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:36:10,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 210 [2022-11-16 19:36:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:36:10,881 INFO L225 Difference]: With dead ends: 10453 [2022-11-16 19:36:10,881 INFO L226 Difference]: Without dead ends: 10451 [2022-11-16 19:36:10,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:36:10,891 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:36:10,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-11-16 19:36:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10451 states. [2022-11-16 19:36:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10451 to 10451. [2022-11-16 19:36:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10451 states, 6045 states have (on average 1.2140612076095947) internal successors, (7339), 6204 states have internal predecessors, (7339), 3326 states have call successors, (3326), 1078 states have call predecessors, (3326), 1077 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-16 19:36:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10451 states to 10451 states and 14060 transitions. [2022-11-16 19:36:11,772 INFO L78 Accepts]: Start accepts. Automaton has 10451 states and 14060 transitions. Word has length 210 [2022-11-16 19:36:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:36:11,773 INFO L495 AbstractCegarLoop]: Abstraction has 10451 states and 14060 transitions. [2022-11-16 19:36:11,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-16 19:36:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 10451 states and 14060 transitions. [2022-11-16 19:36:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-16 19:36:11,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:36:11,780 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 6, 6, 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] [2022-11-16 19:36:11,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 19:36:11,781 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)] === [2022-11-16 19:36:11,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:36:11,781 INFO L85 PathProgramCache]: Analyzing trace with hash -713962081, now seen corresponding path program 1 times [2022-11-16 19:36:11,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:36:11,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943063082] [2022-11-16 19:36:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:36:11,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:36:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:36:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-11-16 19:36:14,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:36:14,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943063082] [2022-11-16 19:36:14,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943063082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:36:14,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:36:14,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:36:14,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178949753] [2022-11-16 19:36:14,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:36:14,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:36:14,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:36:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:36:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:36:14,276 INFO L87 Difference]: Start difference. First operand 10451 states and 14060 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 19:36:16,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:36:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:36:24,549 INFO L93 Difference]: Finished difference Result 10457 states and 14065 transitions. [2022-11-16 19:36:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:36:24,550 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 224 [2022-11-16 19:36:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:36:24,598 INFO L225 Difference]: With dead ends: 10457 [2022-11-16 19:36:24,599 INFO L226 Difference]: Without dead ends: 10455 [2022-11-16 19:36:24,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:36:24,606 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2087 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:36:24,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-16 19:36:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10455 states. [2022-11-16 19:36:25,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10455 to 10455. [2022-11-16 19:36:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10455 states, 6048 states have (on average 1.2139550264550265) internal successors, (7342), 6207 states have internal predecessors, (7342), 3326 states have call successors, (3326), 1079 states have call predecessors, (3326), 1078 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-16 19:36:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10455 states to 10455 states and 14063 transitions. [2022-11-16 19:36:25,378 INFO L78 Accepts]: Start accepts. Automaton has 10455 states and 14063 transitions. Word has length 224 [2022-11-16 19:36:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:36:25,379 INFO L495 AbstractCegarLoop]: Abstraction has 10455 states and 14063 transitions. [2022-11-16 19:36:25,379 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 19:36:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 10455 states and 14063 transitions. [2022-11-16 19:36:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-16 19:36:25,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:36:25,385 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 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, 1, 1, 1] [2022-11-16 19:36:25,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 19:36:25,386 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)] === [2022-11-16 19:36:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:36:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 485781170, now seen corresponding path program 1 times [2022-11-16 19:36:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:36:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520137049] [2022-11-16 19:36:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:36:25,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:36:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:36:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2022-11-16 19:36:27,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:36:27,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520137049] [2022-11-16 19:36:27,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520137049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:36:27,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:36:27,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:36:27,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44205495] [2022-11-16 19:36:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:36:27,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:36:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:36:27,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:36:27,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:36:27,638 INFO L87 Difference]: Start difference. First operand 10455 states and 14063 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-16 19:36:29,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:36:32,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:36:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:36:38,882 INFO L93 Difference]: Finished difference Result 10461 states and 14068 transitions. [2022-11-16 19:36:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:36:38,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 220 [2022-11-16 19:36:38,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:36:38,927 INFO L225 Difference]: With dead ends: 10461 [2022-11-16 19:36:38,928 INFO L226 Difference]: Without dead ends: 10459 [2022-11-16 19:36:38,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:36:38,934 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:36:38,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2095 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-16 19:36:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10459 states. [2022-11-16 19:36:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10459 to 10459. [2022-11-16 19:36:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10459 states, 6051 states have (on average 1.2138489505866799) internal successors, (7345), 6210 states have internal predecessors, (7345), 3326 states have call successors, (3326), 1080 states have call predecessors, (3326), 1079 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-16 19:36:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10459 states to 10459 states and 14066 transitions. [2022-11-16 19:36:39,838 INFO L78 Accepts]: Start accepts. Automaton has 10459 states and 14066 transitions. Word has length 220 [2022-11-16 19:36:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:36:39,839 INFO L495 AbstractCegarLoop]: Abstraction has 10459 states and 14066 transitions. [2022-11-16 19:36:39,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-16 19:36:39,839 INFO L276 IsEmpty]: Start isEmpty. Operand 10459 states and 14066 transitions. [2022-11-16 19:36:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-16 19:36:39,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:36:39,850 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 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, 1, 1, 1, 1, 1] [2022-11-16 19:36:39,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 19:36:39,851 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)] === [2022-11-16 19:36:39,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:36:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1247072774, now seen corresponding path program 1 times [2022-11-16 19:36:39,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:36:39,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430910021] [2022-11-16 19:36:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:36:39,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:36:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:36:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2022-11-16 19:36:42,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:36:42,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430910021] [2022-11-16 19:36:42,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430910021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:36:42,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:36:42,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:36:42,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011740040] [2022-11-16 19:36:42,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:36:42,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:36:42,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:36:42,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:36:42,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:36:42,021 INFO L87 Difference]: Start difference. First operand 10459 states and 14066 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 19:36:44,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:36:51,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:36:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:36:54,223 INFO L93 Difference]: Finished difference Result 10465 states and 14071 transitions. [2022-11-16 19:36:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:36:54,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 225 [2022-11-16 19:36:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:36:54,268 INFO L225 Difference]: With dead ends: 10465 [2022-11-16 19:36:54,268 INFO L226 Difference]: Without dead ends: 10463 [2022-11-16 19:36:54,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:36:54,274 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:36:54,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-11-16 19:36:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10463 states. [2022-11-16 19:36:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10463 to 10463. [2022-11-16 19:36:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10463 states, 6054 states have (on average 1.2137429798480344) internal successors, (7348), 6213 states have internal predecessors, (7348), 3326 states have call successors, (3326), 1081 states have call predecessors, (3326), 1080 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-16 19:36:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 14069 transitions. [2022-11-16 19:36:55,200 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 14069 transitions. Word has length 225 [2022-11-16 19:36:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:36:55,200 INFO L495 AbstractCegarLoop]: Abstraction has 10463 states and 14069 transitions. [2022-11-16 19:36:55,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 19:36:55,200 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 14069 transitions. [2022-11-16 19:36:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-16 19:36:55,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:36:55,210 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 6, 6, 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, 1] [2022-11-16 19:36:55,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 19:36:55,211 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)] === [2022-11-16 19:36:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:36:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1076296301, now seen corresponding path program 1 times [2022-11-16 19:36:55,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:36:55,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353799574] [2022-11-16 19:36:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:36:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:36:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:36:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-11-16 19:36:57,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:36:57,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353799574] [2022-11-16 19:36:57,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353799574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:36:57,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:36:57,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:36:57,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069879425] [2022-11-16 19:36:57,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:36:57,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:36:57,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:36:57,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:36:57,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:36:57,353 INFO L87 Difference]: Start difference. First operand 10463 states and 14069 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, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-16 19:36:59,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:37:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:37:08,058 INFO L93 Difference]: Finished difference Result 10469 states and 14074 transitions. [2022-11-16 19:37:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:37:08,059 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, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 239 [2022-11-16 19:37:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:37:08,188 INFO L225 Difference]: With dead ends: 10469 [2022-11-16 19:37:08,189 INFO L226 Difference]: Without dead ends: 10467 [2022-11-16 19:37:08,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:37:08,194 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2087 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:37:08,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-16 19:37:08,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10467 states. [2022-11-16 19:37:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10467 to 10467. [2022-11-16 19:37:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10467 states, 6057 states have (on average 1.2136371140828792) internal successors, (7351), 6216 states have internal predecessors, (7351), 3326 states have call successors, (3326), 1082 states have call predecessors, (3326), 1081 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-16 19:37:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10467 states to 10467 states and 14072 transitions. [2022-11-16 19:37:09,043 INFO L78 Accepts]: Start accepts. Automaton has 10467 states and 14072 transitions. Word has length 239 [2022-11-16 19:37:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:37:09,044 INFO L495 AbstractCegarLoop]: Abstraction has 10467 states and 14072 transitions. [2022-11-16 19:37:09,044 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, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-16 19:37:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 10467 states and 14072 transitions. [2022-11-16 19:37:09,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-16 19:37:09,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:37:09,051 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:37:09,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 19:37:09,052 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)] === [2022-11-16 19:37:09,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:37:09,052 INFO L85 PathProgramCache]: Analyzing trace with hash -949161798, now seen corresponding path program 1 times [2022-11-16 19:37:09,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:37:09,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160819655] [2022-11-16 19:37:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:37:09,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:37:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:37:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2022-11-16 19:37:11,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:37:11,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160819655] [2022-11-16 19:37:11,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160819655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:37:11,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:37:11,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:37:11,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914245531] [2022-11-16 19:37:11,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:37:11,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:37:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:37:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:37:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:37:11,269 INFO L87 Difference]: Start difference. First operand 10467 states and 14072 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 19:37:13,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:37:20,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:37:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:37:24,347 INFO L93 Difference]: Finished difference Result 10520 states and 14112 transitions. [2022-11-16 19:37:24,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:37:24,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 235 [2022-11-16 19:37:24,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:37:24,385 INFO L225 Difference]: With dead ends: 10520 [2022-11-16 19:37:24,385 INFO L226 Difference]: Without dead ends: 10516 [2022-11-16 19:37:24,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:37:24,394 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 1893 mSDsluCounter, 4322 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 6241 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:37:24,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 6241 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1096 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-11-16 19:37:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10516 states. [2022-11-16 19:37:25,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10516 to 10505. [2022-11-16 19:37:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10505 states, 6081 states have (on average 1.2129583950008223) internal successors, (7376), 6239 states have internal predecessors, (7376), 3326 states have call successors, (3326), 1097 states have call predecessors, (3326), 1095 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-16 19:37:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10505 states to 10505 states and 14097 transitions. [2022-11-16 19:37:25,397 INFO L78 Accepts]: Start accepts. Automaton has 10505 states and 14097 transitions. Word has length 235 [2022-11-16 19:37:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:37:25,398 INFO L495 AbstractCegarLoop]: Abstraction has 10505 states and 14097 transitions. [2022-11-16 19:37:25,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 19:37:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 10505 states and 14097 transitions. [2022-11-16 19:37:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-16 19:37:25,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:37:25,405 INFO L195 NwaCegarLoop]: trace histogram [18, 13, 13, 13, 13, 13, 13, 5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:37:25,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 19:37:25,405 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)] === [2022-11-16 19:37:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:37:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash 120633521, now seen corresponding path program 1 times [2022-11-16 19:37:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:37:25,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276662856] [2022-11-16 19:37:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:37:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:37:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:37:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-11-16 19:37:27,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:37:27,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276662856] [2022-11-16 19:37:27,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276662856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:37:27,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:37:27,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:37:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477826141] [2022-11-16 19:37:27,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:37:27,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:37:27,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:37:27,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:37:27,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:37:27,011 INFO L87 Difference]: Start difference. First operand 10505 states and 14097 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-16 19:37:29,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:37:36,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:37:37,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:37:40,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:37:40,588 INFO L93 Difference]: Finished difference Result 25332 states and 34061 transitions. [2022-11-16 19:37:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:37:40,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 235 [2022-11-16 19:37:40,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:37:40,642 INFO L225 Difference]: With dead ends: 25332 [2022-11-16 19:37:40,643 INFO L226 Difference]: Without dead ends: 15005 [2022-11-16 19:37:40,671 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 [2022-11-16 19:37:40,671 INFO L413 NwaCegarLoop]: 3496 mSDtfsCounter, 2021 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 5285 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:37:40,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2021 Valid, 5285 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 998 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2022-11-16 19:37:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15005 states. [2022-11-16 19:37:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15005 to 14935. [2022-11-16 19:37:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14935 states, 8666 states have (on average 1.2148626817447497) internal successors, (10528), 8892 states have internal predecessors, (10528), 4723 states have call successors, (4723), 1545 states have call predecessors, (4723), 1543 states have return successors, (4826), 4624 states have call predecessors, (4826), 4720 states have call successors, (4826) [2022-11-16 19:37:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14935 states to 14935 states and 20077 transitions. [2022-11-16 19:37:41,989 INFO L78 Accepts]: Start accepts. Automaton has 14935 states and 20077 transitions. Word has length 235 [2022-11-16 19:37:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:37:41,990 INFO L495 AbstractCegarLoop]: Abstraction has 14935 states and 20077 transitions. [2022-11-16 19:37:41,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-16 19:37:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 14935 states and 20077 transitions. [2022-11-16 19:37:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-16 19:37:41,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:37:41,996 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:37:41,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 19:37:41,997 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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)] === [2022-11-16 19:37:41,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:37:41,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1171130318, now seen corresponding path program 1 times [2022-11-16 19:37:41,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:37:41,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991777302] [2022-11-16 19:37:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:37:41,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:37:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:37:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2022-11-16 19:37:44,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:37:44,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991777302] [2022-11-16 19:37:44,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991777302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:37:44,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:37:44,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:37:44,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811839149] [2022-11-16 19:37:44,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:37:44,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:37:44,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:37:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:37:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:37:44,017 INFO L87 Difference]: Start difference. First operand 14935 states and 20077 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-16 19:37:46,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:37:49,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:37:54,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:37:58,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:37:58,182 INFO L93 Difference]: Finished difference Result 15713 states and 20902 transitions. [2022-11-16 19:37:58,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:37:58,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 240 [2022-11-16 19:37:58,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:37:58,237 INFO L225 Difference]: With dead ends: 15713 [2022-11-16 19:37:58,238 INFO L226 Difference]: Without dead ends: 15590 [2022-11-16 19:37:58,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:37:58,244 INFO L413 NwaCegarLoop]: 2014 mSDtfsCounter, 1872 mSDsluCounter, 4622 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 6636 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:37:58,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 6636 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1174 Invalid, 2 Unknown, 0 Unchecked, 12.6s Time] [2022-11-16 19:37:58,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15590 states. [2022-11-16 19:37:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15590 to 15574. [2022-11-16 19:37:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15574 states, 9043 states have (on average 1.2098860997456595) internal successors, (10941), 9245 states have internal predecessors, (10941), 4823 states have call successors, (4823), 1706 states have call predecessors, (4823), 1706 states have return successors, (4929), 4749 states have call predecessors, (4929), 4823 states have call successors, (4929) [2022-11-16 19:37:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15574 states to 15574 states and 20693 transitions. [2022-11-16 19:37:59,591 INFO L78 Accepts]: Start accepts. Automaton has 15574 states and 20693 transitions. Word has length 240 [2022-11-16 19:37:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:37:59,592 INFO L495 AbstractCegarLoop]: Abstraction has 15574 states and 20693 transitions. [2022-11-16 19:37:59,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-16 19:37:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 15574 states and 20693 transitions. [2022-11-16 19:37:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-16 19:37:59,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:37:59,600 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 13, 13, 13, 13, 7, 7, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:37:59,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 19:37:59,601 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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)] === [2022-11-16 19:37:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:37:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1679987075, now seen corresponding path program 1 times [2022-11-16 19:37:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:37:59,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981229826] [2022-11-16 19:37:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:37:59,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:38:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2022-11-16 19:38:01,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:38:01,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981229826] [2022-11-16 19:38:01,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981229826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:01,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:38:01,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:38:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470103494] [2022-11-16 19:38:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:01,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:38:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:38:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:38:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:38:01,116 INFO L87 Difference]: Start difference. First operand 15574 states and 20693 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-16 19:38:03,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:13,857 INFO L93 Difference]: Finished difference Result 35900 states and 47818 transitions. [2022-11-16 19:38:13,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:38:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 277 [2022-11-16 19:38:13,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:13,917 INFO L225 Difference]: With dead ends: 35900 [2022-11-16 19:38:13,917 INFO L226 Difference]: Without dead ends: 20504 [2022-11-16 19:38:13,965 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 [2022-11-16 19:38:13,966 INFO L413 NwaCegarLoop]: 3155 mSDtfsCounter, 1659 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:13,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 4877 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-16 19:38:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20504 states. [2022-11-16 19:38:15,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20504 to 20496. [2022-11-16 19:38:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20496 states, 11952 states have (on average 1.2082496653279786) internal successors, (14441), 12221 states have internal predecessors, (14441), 6313 states have call successors, (6313), 2229 states have call predecessors, (6313), 2229 states have return successors, (6421), 6218 states have call predecessors, (6421), 6313 states have call successors, (6421) [2022-11-16 19:38:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20496 states to 20496 states and 27175 transitions. [2022-11-16 19:38:15,897 INFO L78 Accepts]: Start accepts. Automaton has 20496 states and 27175 transitions. Word has length 277 [2022-11-16 19:38:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:15,898 INFO L495 AbstractCegarLoop]: Abstraction has 20496 states and 27175 transitions. [2022-11-16 19:38:15,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-16 19:38:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 20496 states and 27175 transitions. [2022-11-16 19:38:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-16 19:38:15,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:15,906 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:38:15,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 19:38:15,907 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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)] === [2022-11-16 19:38:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1840095135, now seen corresponding path program 1 times [2022-11-16 19:38:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:38:15,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286851483] [2022-11-16 19:38:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:15,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:38:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2022-11-16 19:38:20,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:38:20,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286851483] [2022-11-16 19:38:20,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286851483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:20,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:38:20,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:38:20,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585879477] [2022-11-16 19:38:20,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:20,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:38:20,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:38:20,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:38:20,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:38:20,522 INFO L87 Difference]: Start difference. First operand 20496 states and 27175 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-16 19:38:22,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:29,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:38:33,048 INFO L93 Difference]: Finished difference Result 20548 states and 27225 transitions. [2022-11-16 19:38:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:38:33,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 321 [2022-11-16 19:38:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:38:33,105 INFO L225 Difference]: With dead ends: 20548 [2022-11-16 19:38:33,106 INFO L226 Difference]: Without dead ends: 20546 [2022-11-16 19:38:33,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:38:33,115 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 1986 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 5421 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-16 19:38:33,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 5421 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1001 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-11-16 19:38:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20546 states. [2022-11-16 19:38:34,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20546 to 20544. [2022-11-16 19:38:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20544 states, 11988 states have (on average 1.206956956956957) internal successors, (14469), 12257 states have internal predecessors, (14469), 6313 states have call successors, (6313), 2241 states have call predecessors, (6313), 2241 states have return successors, (6421), 6218 states have call predecessors, (6421), 6313 states have call successors, (6421) [2022-11-16 19:38:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20544 states to 20544 states and 27203 transitions. [2022-11-16 19:38:35,044 INFO L78 Accepts]: Start accepts. Automaton has 20544 states and 27203 transitions. Word has length 321 [2022-11-16 19:38:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:38:35,045 INFO L495 AbstractCegarLoop]: Abstraction has 20544 states and 27203 transitions. [2022-11-16 19:38:35,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-16 19:38:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 20544 states and 27203 transitions. [2022-11-16 19:38:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-16 19:38:35,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:38:35,059 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:38:35,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 19:38:35,059 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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)] === [2022-11-16 19:38:35,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:38:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1931753205, now seen corresponding path program 1 times [2022-11-16 19:38:35,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:38:35,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143738563] [2022-11-16 19:38:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:38:35,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:38:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:38:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-16 19:38:37,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:38:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143738563] [2022-11-16 19:38:37,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143738563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:38:37,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:38:37,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:38:37,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561834946] [2022-11-16 19:38:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:38:37,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:38:37,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:38:37,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:38:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:38:37,392 INFO L87 Difference]: Start difference. First operand 20544 states and 27203 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 19:38:39,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:45,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:51,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:52,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:38:54,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:39:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:03,439 INFO L93 Difference]: Finished difference Result 45672 states and 60498 transitions. [2022-11-16 19:39:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:39:03,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 326 [2022-11-16 19:39:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:03,517 INFO L225 Difference]: With dead ends: 45672 [2022-11-16 19:39:03,517 INFO L226 Difference]: Without dead ends: 25306 [2022-11-16 19:39:03,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:03,570 INFO L413 NwaCegarLoop]: 3151 mSDtfsCounter, 1621 mSDsluCounter, 8022 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 11173 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:03,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 11173 Invalid, 2129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2127 Invalid, 1 Unknown, 0 Unchecked, 23.6s Time] [2022-11-16 19:39:03,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25306 states. [2022-11-16 19:39:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25306 to 25286. [2022-11-16 19:39:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25286 states, 14720 states have (on average 1.2074048913043478) internal successors, (17773), 15056 states have internal predecessors, (17773), 7797 states have call successors, (7797), 2761 states have call predecessors, (7797), 2767 states have return successors, (7913), 7687 states have call predecessors, (7913), 7797 states have call successors, (7913) [2022-11-16 19:39:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25286 states to 25286 states and 33483 transitions. [2022-11-16 19:39:06,298 INFO L78 Accepts]: Start accepts. Automaton has 25286 states and 33483 transitions. Word has length 326 [2022-11-16 19:39:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:06,299 INFO L495 AbstractCegarLoop]: Abstraction has 25286 states and 33483 transitions. [2022-11-16 19:39:06,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 19:39:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 25286 states and 33483 transitions. [2022-11-16 19:39:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-16 19:39:06,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:06,311 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 19:39:06,311 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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)] === [2022-11-16 19:39:06,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1291349982, now seen corresponding path program 1 times [2022-11-16 19:39:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:39:06,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137033157] [2022-11-16 19:39:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:39:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-16 19:39:08,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:39:08,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137033157] [2022-11-16 19:39:08,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137033157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:08,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:08,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:39:08,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437394196] [2022-11-16 19:39:08,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:08,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:39:08,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:39:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:39:08,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:08,036 INFO L87 Difference]: Start difference. First operand 25286 states and 33483 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 19:39:10,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:39:20,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:39:23,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:39:25,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:39:27,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:39:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:35,041 INFO L93 Difference]: Finished difference Result 58831 states and 77933 transitions. [2022-11-16 19:39:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:39:35,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 327 [2022-11-16 19:39:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:35,146 INFO L225 Difference]: With dead ends: 58831 [2022-11-16 19:39:35,146 INFO L226 Difference]: Without dead ends: 33723 [2022-11-16 19:39:35,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:35,201 INFO L413 NwaCegarLoop]: 3037 mSDtfsCounter, 1749 mSDsluCounter, 7786 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 22 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 10823 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:35,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 10823 Invalid, 2105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 2080 Invalid, 3 Unknown, 0 Unchecked, 23.6s Time] [2022-11-16 19:39:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33723 states. [2022-11-16 19:39:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33723 to 33703. [2022-11-16 19:39:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33703 states, 19480 states have (on average 1.2010266940451746) internal successors, (23396), 19930 states have internal predecessors, (23396), 10493 states have call successors, (10493), 3716 states have call predecessors, (10493), 3728 states have return successors, (10623), 10344 states have call predecessors, (10623), 10493 states have call successors, (10623) [2022-11-16 19:39:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33703 states to 33703 states and 44512 transitions. [2022-11-16 19:39:38,239 INFO L78 Accepts]: Start accepts. Automaton has 33703 states and 44512 transitions. Word has length 327 [2022-11-16 19:39:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:38,239 INFO L495 AbstractCegarLoop]: Abstraction has 33703 states and 44512 transitions. [2022-11-16 19:39:38,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 19:39:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 33703 states and 44512 transitions. [2022-11-16 19:39:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-16 19:39:38,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:38,248 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:38,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 19:39:38,248 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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)] === [2022-11-16 19:39:38,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1444566276, now seen corresponding path program 1 times [2022-11-16 19:39:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:39:38,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272112046] [2022-11-16 19:39:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:38,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:39:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-16 19:39:40,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:39:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272112046] [2022-11-16 19:39:40,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272112046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:40,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:40,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:39:40,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954501616] [2022-11-16 19:39:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:40,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:39:40,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:39:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:39:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:40,049 INFO L87 Difference]: Start difference. First operand 33703 states and 44512 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 19:39:42,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:39:56,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:40:03,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:40:03,313 INFO L93 Difference]: Finished difference Result 73169 states and 96824 transitions. [2022-11-16 19:40:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:40:03,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 328 [2022-11-16 19:40:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:40:03,568 INFO L225 Difference]: With dead ends: 73169 [2022-11-16 19:40:03,568 INFO L226 Difference]: Without dead ends: 39644 [2022-11-16 19:40:03,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:40:03,634 INFO L413 NwaCegarLoop]: 3115 mSDtfsCounter, 1592 mSDsluCounter, 7948 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 25 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 11063 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:40:03,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 11063 Invalid, 2193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 2166 Invalid, 2 Unknown, 0 Unchecked, 19.2s Time] [2022-11-16 19:40:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39644 states. [2022-11-16 19:40:06,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39644 to 39618. [2022-11-16 19:40:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39618 states, 22923 states have (on average 1.2003664441826987) internal successors, (27516), 23451 states have internal predecessors, (27516), 12343 states have call successors, (12343), 4335 states have call predecessors, (12343), 4350 states have return successors, (12491), 12173 states have call predecessors, (12491), 12343 states have call successors, (12491) [2022-11-16 19:40:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39618 states to 39618 states and 52350 transitions. [2022-11-16 19:40:07,114 INFO L78 Accepts]: Start accepts. Automaton has 39618 states and 52350 transitions. Word has length 328 [2022-11-16 19:40:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:40:07,115 INFO L495 AbstractCegarLoop]: Abstraction has 39618 states and 52350 transitions. [2022-11-16 19:40:07,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 19:40:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 39618 states and 52350 transitions. [2022-11-16 19:40:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-16 19:40:07,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:40:07,128 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:40:07,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 19:40:07,129 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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)] === [2022-11-16 19:40:07,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:40:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash 686906555, now seen corresponding path program 1 times [2022-11-16 19:40:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:40:07,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686441] [2022-11-16 19:40:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:40:07,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:40:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:40:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-16 19:40:10,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:40:10,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686441] [2022-11-16 19:40:10,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:40:10,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:40:10,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:40:10,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446638811] [2022-11-16 19:40:10,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:40:10,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:40:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:40:10,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:40:10,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:40:10,532 INFO L87 Difference]: Start difference. First operand 39618 states and 52350 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 19:40:12,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:40:21,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:40:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:40:28,440 INFO L93 Difference]: Finished difference Result 83096 states and 109854 transitions. [2022-11-16 19:40:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:40:28,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 329 [2022-11-16 19:40:28,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:40:28,652 INFO L225 Difference]: With dead ends: 83096 [2022-11-16 19:40:28,653 INFO L226 Difference]: Without dead ends: 43656 [2022-11-16 19:40:28,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:40:28,764 INFO L413 NwaCegarLoop]: 2253 mSDtfsCounter, 1743 mSDsluCounter, 6033 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 8286 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:40:28,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 8286 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1472 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2022-11-16 19:40:28,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43656 states. [2022-11-16 19:40:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43656 to 43628. [2022-11-16 19:40:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43628 states, 25268 states have (on average 1.2027465569099256) internal successors, (30391), 25856 states have internal predecessors, (30391), 13575 states have call successors, (13575), 4767 states have call predecessors, (13575), 4783 states have return successors, (13729), 13389 states have call predecessors, (13729), 13575 states have call successors, (13729) [2022-11-16 19:40:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43628 states to 43628 states and 57695 transitions. [2022-11-16 19:40:33,727 INFO L78 Accepts]: Start accepts. Automaton has 43628 states and 57695 transitions. Word has length 329 [2022-11-16 19:40:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:40:33,728 INFO L495 AbstractCegarLoop]: Abstraction has 43628 states and 57695 transitions. [2022-11-16 19:40:33,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 19:40:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 43628 states and 57695 transitions. [2022-11-16 19:40:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-16 19:40:33,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:40:33,744 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:40:33,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 19:40:33,744 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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)] === [2022-11-16 19:40:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:40:33,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1673600684, now seen corresponding path program 1 times [2022-11-16 19:40:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:40:33,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750412849] [2022-11-16 19:40:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:40:33,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:40:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:40:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-16 19:40:37,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:40:37,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750412849] [2022-11-16 19:40:37,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750412849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:40:37,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:40:37,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 19:40:37,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939649420] [2022-11-16 19:40:37,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:40:37,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:40:37,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:40:37,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:40:37,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:40:37,536 INFO L87 Difference]: Start difference. First operand 43628 states and 57695 transitions. Second operand has 8 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (52), 4 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-16 19:40:39,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 19:40:55,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []