./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-wireless-rtl818x-rtl8180-rtl8180.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7 --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 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:14:36,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:14:36,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:14:36,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:14:36,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:14:36,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:14:36,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:14:36,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:14:36,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:14:36,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:14:36,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:14:36,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:14:36,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:14:36,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:14:36,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:14:36,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:14:36,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:14:36,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:14:36,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:14:36,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:14:36,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:14:36,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:14:36,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:14:36,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:14:36,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:14:36,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:14:36,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:14:36,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:14:36,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:14:36,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:14:36,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:14:36,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:14:36,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:14:36,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:14:36,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:14:36,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:14:36,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:14:36,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:14:36,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:14:36,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:14:36,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:14:36,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:14:36,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:14:36,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:14:36,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:14:36,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:14:36,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:14:36,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:14:36,934 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:14:36,934 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:14:36,935 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:14:36,935 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:14:36,936 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:14:36,936 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:14:36,936 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:14:36,936 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:14:36,937 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:14:36,937 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:14:36,937 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:14:36,937 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:14:36,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:14:36,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:14:36,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:14:36,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:14:36,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:14:36,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:14:36,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:14:36,939 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:14:36,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:14:36,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:14:36,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:14:36,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:14:36,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:14:36,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:14:36,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:14:36,942 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:14:36,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:14:36,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:14:36,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:14:36,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:14:36,943 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 [2021-11-25 19:14:37,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:14:37,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:14:37,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:14:37,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:14:37,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:14:37,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-25 19:14:37,341 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/data/c3173fb48/d855a91224ba48c19749b8383942c1ef/FLAGf94e05604 [2021-11-25 19:14:38,388 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:14:38,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-25 19:14:38,483 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/data/c3173fb48/d855a91224ba48c19749b8383942c1ef/FLAGf94e05604 [2021-11-25 19:14:38,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/data/c3173fb48/d855a91224ba48c19749b8383942c1ef [2021-11-25 19:14:38,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:14:38,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:14:38,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:14:38,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:14:38,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:14:38,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:14:38" (1/1) ... [2021-11-25 19:14:38,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae1bf60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:38, skipping insertion in model container [2021-11-25 19:14:38,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:14:38" (1/1) ... [2021-11-25 19:14:38,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:14:38,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:14:43,106 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2021-11-25 19:14:43,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2021-11-25 19:14:43,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2021-11-25 19:14:43,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2021-11-25 19:14:43,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:14:43,231 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:14:43,740 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2021-11-25 19:14:43,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2021-11-25 19:14:43,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2021-11-25 19:14:43,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2021-11-25 19:14:43,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:14:44,002 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:14:44,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44 WrapperNode [2021-11-25 19:14:44,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:14:44,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:14:44,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:14:44,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:14:44,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,381 INFO L137 Inliner]: procedures = 522, calls = 3749, calls flagged for inlining = 276, calls inlined = 260, statements flattened = 6740 [2021-11-25 19:14:44,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:14:44,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:14:44,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:14:44,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:14:44,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:14:44,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:14:44,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:14:44,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:14:44,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (1/1) ... [2021-11-25 19:14:44,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:14:44,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:44,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:14:44,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a32b7a7e-4716-41fd-b14f-057be726b3d5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:14:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2021-11-25 19:14:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2021-11-25 19:14:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-25 19:14:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-25 19:14:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2021-11-25 19:14:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2021-11-25 19:14:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2021-11-25 19:14:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2021-11-25 19:14:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 19:14:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 19:14:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:14:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:14:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:14:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:14:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2021-11-25 19:14:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2021-11-25 19:14:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2021-11-25 19:14:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2021-11-25 19:14:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:14:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:14:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:14:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:14:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 19:14:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 19:14:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:14:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:14:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2021-11-25 19:14:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2021-11-25 19:14:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2021-11-25 19:14:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2021-11-25 19:14:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2021-11-25 19:14:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2021-11-25 19:14:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:14:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:14:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2021-11-25 19:14:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2021-11-25 19:14:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2021-11-25 19:14:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2021-11-25 19:14:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2021-11-25 19:14:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2021-11-25 19:14:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:14:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:14:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 19:14:44,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 19:14:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rtl8180_driver_exit_14_2 [2021-11-25 19:14:44,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rtl8180_driver_exit_14_2 [2021-11-25 19:14:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:14:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2021-11-25 19:14:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2021-11-25 19:14:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2021-11-25 19:14:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2021-11-25 19:14:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2021-11-25 19:14:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2021-11-25 19:14:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:14:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2021-11-25 19:14:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2021-11-25 19:14:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_conf_erp [2021-11-25 19:14:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_conf_erp [2021-11-25 19:14:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:14:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:14:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:14:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:14:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2021-11-25 19:14:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2021-11-25 19:14:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:14:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:14:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:14:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2021-11-25 19:14:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2021-11-25 19:14:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:14:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:14:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:14:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2021-11-25 19:14:44,958 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2021-11-25 19:14:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:14:44,958 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:14:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 19:14:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 19:14:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:14:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:14:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:14:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:14:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-25 19:14:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-25 19:14:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2021-11-25 19:14:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2021-11-25 19:14:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2021-11-25 19:14:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2021-11-25 19:14:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 19:14:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 19:14:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:14:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:14:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2021-11-25 19:14:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2021-11-25 19:14:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2021-11-25 19:14:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2021-11-25 19:14:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2021-11-25 19:14:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2021-11-25 19:14:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:14:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:14:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-25 19:14:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-25 19:14:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:14:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:14:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:14:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:14:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:14:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:14:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 19:14:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 19:14:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-25 19:14:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-25 19:14:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2021-11-25 19:14:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2021-11-25 19:14:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:14:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:14:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:14:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:14:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:14:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:14:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:14:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:14:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:14:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2021-11-25 19:14:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2021-11-25 19:14:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_start [2021-11-25 19:14:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_start [2021-11-25 19:14:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2021-11-25 19:14:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2021-11-25 19:14:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:14:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:14:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_resume [2021-11-25 19:14:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_resume [2021-11-25 19:14:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2021-11-25 19:14:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2021-11-25 19:14:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rtl8180_priv [2021-11-25 19:14:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rtl8180_priv [2021-11-25 19:14:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2021-11-25 19:14:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2021-11-25 19:14:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2021-11-25 19:14:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2021-11-25 19:14:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-25 19:14:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-25 19:14:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:14:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:14:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:14:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:14:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2021-11-25 19:14:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2021-11-25 19:14:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:14:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:14:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:14:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:14:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-25 19:14:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-25 19:14:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:14:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:14:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ieee80211_free_hw [2021-11-25 19:14:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ieee80211_free_hw [2021-11-25 19:14:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2021-11-25 19:14:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2021-11-25 19:14:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2021-11-25 19:14:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2021-11-25 19:14:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2021-11-25 19:14:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2021-11-25 19:14:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-25 19:14:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-25 19:14:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 19:14:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 19:14:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 19:14:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 19:14:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2021-11-25 19:14:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2021-11-25 19:14:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:14:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:14:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 19:14:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 19:14:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2021-11-25 19:14:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2021-11-25 19:14:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:14:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2021-11-25 19:14:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2021-11-25 19:14:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:14:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:14:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-25 19:14:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-25 19:14:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:14:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:14:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2021-11-25 19:14:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2021-11-25 19:14:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2021-11-25 19:14:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2021-11-25 19:14:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2021-11-25 19:14:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2021-11-25 19:14:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_61 [2021-11-25 19:14:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_61 [2021-11-25 19:14:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-25 19:14:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-25 19:14:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2021-11-25 19:14:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2021-11-25 19:14:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2021-11-25 19:14:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2021-11-25 19:14:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:14:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2021-11-25 19:14:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2021-11-25 19:14:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-25 19:14:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-25 19:14:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:14:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:14:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2021-11-25 19:14:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2021-11-25 19:14:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2021-11-25 19:14:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2021-11-25 19:14:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rtl8180_priv [2021-11-25 19:14:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rtl8180_priv [2021-11-25 19:14:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-25 19:14:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-25 19:14:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-25 19:14:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-25 19:14:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:14:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:14:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2021-11-25 19:14:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2021-11-25 19:14:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 19:14:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 19:14:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2021-11-25 19:14:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2021-11-25 19:14:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2021-11-25 19:14:44,997 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2021-11-25 19:14:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 19:14:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:14:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 19:14:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 19:14:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2021-11-25 19:14:45,002 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2021-11-25 19:14:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:14:45,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:14:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2021-11-25 19:14:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2021-11-25 19:14:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2021-11-25 19:14:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2021-11-25 19:14:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-25 19:14:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-25 19:14:46,190 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:14:46,196 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:14:46,416 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:14:56,113 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:14:56,287 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:14:58,004 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:14:58,004 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:14:58,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:58 BoogieIcfgContainer [2021-11-25 19:14:58,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:14:58,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:14:58,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:14:58,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:14:58,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:14:38" (1/3) ... [2021-11-25 19:14:58,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40478310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:14:58, skipping insertion in model container [2021-11-25 19:14:58,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:14:44" (2/3) ... [2021-11-25 19:14:58,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40478310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:14:58, skipping insertion in model container [2021-11-25 19:14:58,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:14:58" (3/3) ... [2021-11-25 19:14:58,019 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-25 19:14:58,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:14:58,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:14:58,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:14:58,107 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:14:58,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:14:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 1174 states have (on average 1.2589437819420783) internal successors, (1478), 1212 states have internal predecessors, (1478), 1209 states have call successors, (1209), 113 states have call predecessors, (1209), 112 states have return successors, (1201), 1184 states have call predecessors, (1201), 1201 states have call successors, (1201) [2021-11-25 19:14:58,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-11-25 19:14:58,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:58,233 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:58,234 INFO L402 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)] === [2021-11-25 19:14:58,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash 298194244, now seen corresponding path program 1 times [2021-11-25 19:14:58,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:14:58,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070925354] [2021-11-25 19:14:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:58,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:14:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2021-11-25 19:14:59,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:14:59,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070925354] [2021-11-25 19:14:59,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070925354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:59,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:14:59,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:14:59,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203391615] [2021-11-25 19:14:59,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:59,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:14:59,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:14:59,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:14:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:14:59,422 INFO L87 Difference]: Start difference. First operand has 2498 states, 1174 states have (on average 1.2589437819420783) internal successors, (1478), 1212 states have internal predecessors, (1478), 1209 states have call successors, (1209), 113 states have call predecessors, (1209), 112 states have return successors, (1201), 1184 states have call predecessors, (1201), 1201 states have call successors, (1201) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-25 19:15:01,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:06,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:15:07,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:07,054 INFO L93 Difference]: Finished difference Result 7268 states and 11407 transitions. [2021-11-25 19:15:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:15:07,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 381 [2021-11-25 19:15:07,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:07,150 INFO L225 Difference]: With dead ends: 7268 [2021-11-25 19:15:07,150 INFO L226 Difference]: Without dead ends: 4829 [2021-11-25 19:15:07,187 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:15:07,194 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 3680 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 8172 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:07,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3685 Valid, 8172 Invalid, 716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 708 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-25 19:15:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2021-11-25 19:15:07,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 4824. [2021-11-25 19:15:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 2270 states have (on average 1.2559471365638766) internal successors, (2851), 2342 states have internal predecessors, (2851), 2331 states have call successors, (2331), 221 states have call predecessors, (2331), 220 states have return successors, (2332), 2292 states have call predecessors, (2332), 2327 states have call successors, (2332) [2021-11-25 19:15:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 7514 transitions. [2021-11-25 19:15:08,093 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 7514 transitions. Word has length 381 [2021-11-25 19:15:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:08,098 INFO L470 AbstractCegarLoop]: Abstraction has 4824 states and 7514 transitions. [2021-11-25 19:15:08,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-25 19:15:08,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 7514 transitions. [2021-11-25 19:15:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-11-25 19:15:08,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:08,114 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:08,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:15:08,116 INFO L402 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)] === [2021-11-25 19:15:08,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:08,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1635874778, now seen corresponding path program 1 times [2021-11-25 19:15:08,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:08,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373850429] [2021-11-25 19:15:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:08,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2021-11-25 19:15:08,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:08,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373850429] [2021-11-25 19:15:08,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373850429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:08,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:08,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:15:08,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522196744] [2021-11-25 19:15:08,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:08,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:15:08,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:08,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:15:08,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:15:08,674 INFO L87 Difference]: Start difference. First operand 4824 states and 7514 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-25 19:15:09,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:13,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:15:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:15,101 INFO L93 Difference]: Finished difference Result 14102 states and 22043 transitions. [2021-11-25 19:15:15,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:15:15,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 383 [2021-11-25 19:15:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:15,220 INFO L225 Difference]: With dead ends: 14102 [2021-11-25 19:15:15,221 INFO L226 Difference]: Without dead ends: 9351 [2021-11-25 19:15:15,276 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:15:15,277 INFO L933 BasicCegarLoop]: 4679 mSDtfsCounter, 3590 mSDsluCounter, 3841 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:15,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3595 Valid, 8183 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 698 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 19:15:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9351 states. [2021-11-25 19:15:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9351 to 9323. [2021-11-25 19:15:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9323 states, 4361 states have (on average 1.2561339142398533) internal successors, (5478), 4500 states have internal predecessors, (5478), 4530 states have call successors, (4530), 432 states have call predecessors, (4530), 429 states have return successors, (4587), 4446 states have call predecessors, (4587), 4526 states have call successors, (4587) [2021-11-25 19:15:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9323 states to 9323 states and 14595 transitions. [2021-11-25 19:15:16,376 INFO L78 Accepts]: Start accepts. Automaton has 9323 states and 14595 transitions. Word has length 383 [2021-11-25 19:15:16,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:16,379 INFO L470 AbstractCegarLoop]: Abstraction has 9323 states and 14595 transitions. [2021-11-25 19:15:16,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-25 19:15:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 9323 states and 14595 transitions. [2021-11-25 19:15:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-25 19:15:16,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:16,402 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:16,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:15:16,402 INFO L402 AbstractCegarLoop]: === Iteration 3 === 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)] === [2021-11-25 19:15:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash -509427797, now seen corresponding path program 1 times [2021-11-25 19:15:16,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:16,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134706660] [2021-11-25 19:15:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:16,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5367 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5367 trivial. 0 not checked. [2021-11-25 19:15:17,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:17,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134706660] [2021-11-25 19:15:17,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134706660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:17,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:17,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:15:17,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380565259] [2021-11-25 19:15:17,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:17,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:15:17,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:15:17,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:15:17,165 INFO L87 Difference]: Start difference. First operand 9323 states and 14595 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 19:15:19,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:21,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:26,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:15:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:27,159 INFO L93 Difference]: Finished difference Result 9348 states and 14620 transitions. [2021-11-25 19:15:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:15:27,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 423 [2021-11-25 19:15:27,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:27,283 INFO L225 Difference]: With dead ends: 9348 [2021-11-25 19:15:27,283 INFO L226 Difference]: Without dead ends: 9346 [2021-11-25 19:15:27,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:15:27,297 INFO L933 BasicCegarLoop]: 3519 mSDtfsCounter, 3748 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3764 SdHoareTripleChecker+Valid, 10562 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:27,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3764 Valid, 10562 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1062 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2021-11-25 19:15:27,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2021-11-25 19:15:28,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 9344. [2021-11-25 19:15:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9344 states, 4373 states have (on average 1.25565973016236) internal successors, (5491), 4513 states have internal predecessors, (5491), 4532 states have call successors, (4532), 438 states have call predecessors, (4532), 436 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-25 19:15:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9344 states to 9344 states and 14617 transitions. [2021-11-25 19:15:28,358 INFO L78 Accepts]: Start accepts. Automaton has 9344 states and 14617 transitions. Word has length 423 [2021-11-25 19:15:28,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:28,359 INFO L470 AbstractCegarLoop]: Abstraction has 9344 states and 14617 transitions. [2021-11-25 19:15:28,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 19:15:28,360 INFO L276 IsEmpty]: Start isEmpty. Operand 9344 states and 14617 transitions. [2021-11-25 19:15:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-25 19:15:28,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:28,379 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:28,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:15:28,379 INFO L402 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)] === [2021-11-25 19:15:28,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:28,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1199213954, now seen corresponding path program 1 times [2021-11-25 19:15:28,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:28,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481975270] [2021-11-25 19:15:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:28,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5376 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-25 19:15:29,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:29,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481975270] [2021-11-25 19:15:29,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481975270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:29,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:29,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:15:29,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616564102] [2021-11-25 19:15:29,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:29,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:15:29,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:15:29,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:15:29,136 INFO L87 Difference]: Start difference. First operand 9344 states and 14617 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:15:31,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:34,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:38,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:15:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:39,690 INFO L93 Difference]: Finished difference Result 9352 states and 14623 transitions. [2021-11-25 19:15:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:15:39,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 431 [2021-11-25 19:15:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:39,793 INFO L225 Difference]: With dead ends: 9352 [2021-11-25 19:15:39,793 INFO L226 Difference]: Without dead ends: 9350 [2021-11-25 19:15:39,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:15:39,808 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3742 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:39,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1062 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-25 19:15:39,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9350 states. [2021-11-25 19:15:40,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9350 to 9348. [2021-11-25 19:15:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9348 states, 4376 states have (on average 1.2554844606946984) internal successors, (5494), 4516 states have internal predecessors, (5494), 4532 states have call successors, (4532), 439 states have call predecessors, (4532), 437 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-25 19:15:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9348 states to 9348 states and 14620 transitions. [2021-11-25 19:15:40,858 INFO L78 Accepts]: Start accepts. Automaton has 9348 states and 14620 transitions. Word has length 431 [2021-11-25 19:15:40,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:40,860 INFO L470 AbstractCegarLoop]: Abstraction has 9348 states and 14620 transitions. [2021-11-25 19:15:40,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:15:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand 9348 states and 14620 transitions. [2021-11-25 19:15:40,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-25 19:15:40,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:40,887 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 3, 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] [2021-11-25 19:15:40,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:15:40,888 INFO L402 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)] === [2021-11-25 19:15:40,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:40,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1677726485, now seen corresponding path program 1 times [2021-11-25 19:15:40,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:40,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314569987] [2021-11-25 19:15:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:40,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5375 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5371 trivial. 0 not checked. [2021-11-25 19:15:41,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:41,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314569987] [2021-11-25 19:15:41,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314569987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:41,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:41,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:15:41,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729247924] [2021-11-25 19:15:41,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:41,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:15:41,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:41,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:15:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:15:41,477 INFO L87 Difference]: Start difference. First operand 9348 states and 14620 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 19:15:43,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:45,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:46,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:50,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:15:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:51,002 INFO L93 Difference]: Finished difference Result 9356 states and 14626 transitions. [2021-11-25 19:15:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:15:51,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 433 [2021-11-25 19:15:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:51,080 INFO L225 Difference]: With dead ends: 9356 [2021-11-25 19:15:51,081 INFO L226 Difference]: Without dead ends: 9354 [2021-11-25 19:15:51,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:15:51,093 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3743 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:51,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1062 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-11-25 19:15:51,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9354 states. [2021-11-25 19:15:51,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9354 to 9352. [2021-11-25 19:15:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9352 states, 4379 states have (on average 1.2553094313770268) internal successors, (5497), 4519 states have internal predecessors, (5497), 4532 states have call successors, (4532), 440 states have call predecessors, (4532), 438 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-25 19:15:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9352 states to 9352 states and 14623 transitions. [2021-11-25 19:15:52,087 INFO L78 Accepts]: Start accepts. Automaton has 9352 states and 14623 transitions. Word has length 433 [2021-11-25 19:15:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:52,089 INFO L470 AbstractCegarLoop]: Abstraction has 9352 states and 14623 transitions. [2021-11-25 19:15:52,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 19:15:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9352 states and 14623 transitions. [2021-11-25 19:15:52,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-25 19:15:52,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:52,113 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:52,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:15:52,114 INFO L402 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)] === [2021-11-25 19:15:52,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:52,115 INFO L85 PathProgramCache]: Analyzing trace with hash 562459138, now seen corresponding path program 1 times [2021-11-25 19:15:52,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:52,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566698454] [2021-11-25 19:15:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:52,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5392 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5386 trivial. 0 not checked. [2021-11-25 19:15:52,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:52,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566698454] [2021-11-25 19:15:52,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566698454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:52,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:15:52,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:15:52,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060254520] [2021-11-25 19:15:52,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:52,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:15:52,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:52,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:15:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:15:52,634 INFO L87 Difference]: Start difference. First operand 9352 states and 14623 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 19:15:54,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:59,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:15:59,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:59,941 INFO L93 Difference]: Finished difference Result 9392 states and 14661 transitions. [2021-11-25 19:15:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:15:59,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 441 [2021-11-25 19:15:59,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:00,025 INFO L225 Difference]: With dead ends: 9392 [2021-11-25 19:16:00,026 INFO L226 Difference]: Without dead ends: 9390 [2021-11-25 19:16:00,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:16:00,038 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3729 mSDsluCounter, 7758 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 10578 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:00,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 10578 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1068 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 19:16:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9390 states. [2021-11-25 19:16:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9390 to 9380. [2021-11-25 19:16:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9380 states, 4394 states have (on average 1.2544378698224852) internal successors, (5512), 4534 states have internal predecessors, (5512), 4532 states have call successors, (4532), 453 states have call predecessors, (4532), 451 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-25 19:16:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9380 states to 9380 states and 14638 transitions. [2021-11-25 19:16:01,210 INFO L78 Accepts]: Start accepts. Automaton has 9380 states and 14638 transitions. Word has length 441 [2021-11-25 19:16:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:01,211 INFO L470 AbstractCegarLoop]: Abstraction has 9380 states and 14638 transitions. [2021-11-25 19:16:01,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 19:16:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9380 states and 14638 transitions. [2021-11-25 19:16:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-25 19:16:01,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:01,235 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:01,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:16:01,236 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:16:01,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash 978380745, now seen corresponding path program 1 times [2021-11-25 19:16:01,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:01,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483412273] [2021-11-25 19:16:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:01,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5407 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5399 trivial. 0 not checked. [2021-11-25 19:16:01,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:01,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483412273] [2021-11-25 19:16:01,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483412273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:01,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:01,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:16:01,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228139641] [2021-11-25 19:16:01,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:01,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:16:01,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:01,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:16:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:16:01,799 INFO L87 Difference]: Start difference. First operand 9380 states and 14638 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:16:04,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:07,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:16:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:08,648 INFO L93 Difference]: Finished difference Result 9396 states and 14664 transitions. [2021-11-25 19:16:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:16:08,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 447 [2021-11-25 19:16:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:08,728 INFO L225 Difference]: With dead ends: 9396 [2021-11-25 19:16:08,729 INFO L226 Difference]: Without dead ends: 9394 [2021-11-25 19:16:08,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:16:08,736 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3729 mSDsluCounter, 7758 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3745 SdHoareTripleChecker+Valid, 10578 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:08,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3745 Valid, 10578 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1068 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 19:16:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9394 states. [2021-11-25 19:16:09,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9394 to 9384. [2021-11-25 19:16:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9384 states, 4397 states have (on average 1.2542642710939276) internal successors, (5515), 4537 states have internal predecessors, (5515), 4532 states have call successors, (4532), 454 states have call predecessors, (4532), 452 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-25 19:16:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9384 states to 9384 states and 14641 transitions. [2021-11-25 19:16:09,926 INFO L78 Accepts]: Start accepts. Automaton has 9384 states and 14641 transitions. Word has length 447 [2021-11-25 19:16:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:09,928 INFO L470 AbstractCegarLoop]: Abstraction has 9384 states and 14641 transitions. [2021-11-25 19:16:09,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:16:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9384 states and 14641 transitions. [2021-11-25 19:16:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-25 19:16:09,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:09,953 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:09,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:16:09,954 INFO L402 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)] === [2021-11-25 19:16:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2136022247, now seen corresponding path program 1 times [2021-11-25 19:16:09,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775375616] [2021-11-25 19:16:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:09,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5417 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5407 trivial. 0 not checked. [2021-11-25 19:16:10,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:10,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775375616] [2021-11-25 19:16:10,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775375616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:10,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:10,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:16:10,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824666680] [2021-11-25 19:16:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:10,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:16:10,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:10,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:16:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:16:10,504 INFO L87 Difference]: Start difference. First operand 9384 states and 14641 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 19:16:12,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:13,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:16,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:16:17,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:17,816 INFO L93 Difference]: Finished difference Result 9392 states and 14647 transitions. [2021-11-25 19:16:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:16:17,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 448 [2021-11-25 19:16:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:17,881 INFO L225 Difference]: With dead ends: 9392 [2021-11-25 19:16:17,881 INFO L226 Difference]: Without dead ends: 9390 [2021-11-25 19:16:17,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:16:17,891 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3743 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3754 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:17,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3754 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 19:16:17,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9390 states. [2021-11-25 19:16:18,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9390 to 9388. [2021-11-25 19:16:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9388 states, 4400 states have (on average 1.2540909090909091) internal successors, (5518), 4540 states have internal predecessors, (5518), 4532 states have call successors, (4532), 455 states have call predecessors, (4532), 453 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-25 19:16:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9388 states to 9388 states and 14644 transitions. [2021-11-25 19:16:18,932 INFO L78 Accepts]: Start accepts. Automaton has 9388 states and 14644 transitions. Word has length 448 [2021-11-25 19:16:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:18,933 INFO L470 AbstractCegarLoop]: Abstraction has 9388 states and 14644 transitions. [2021-11-25 19:16:18,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 19:16:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 9388 states and 14644 transitions. [2021-11-25 19:16:18,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-25 19:16:18,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:18,957 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:18,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:16:18,957 INFO L402 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)] === [2021-11-25 19:16:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:18,958 INFO L85 PathProgramCache]: Analyzing trace with hash 787523435, now seen corresponding path program 1 times [2021-11-25 19:16:18,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:18,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18066304] [2021-11-25 19:16:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:18,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5427 trivial. 0 not checked. [2021-11-25 19:16:19,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:19,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18066304] [2021-11-25 19:16:19,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18066304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:19,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:19,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:16:19,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395510494] [2021-11-25 19:16:19,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:19,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:16:19,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:19,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:16:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:16:19,528 INFO L87 Difference]: Start difference. First operand 9388 states and 14644 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:16:20,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:22,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:24,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:28,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:16:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:29,086 INFO L93 Difference]: Finished difference Result 9572 states and 14819 transitions. [2021-11-25 19:16:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:16:29,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 453 [2021-11-25 19:16:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:29,148 INFO L225 Difference]: With dead ends: 9572 [2021-11-25 19:16:29,148 INFO L226 Difference]: Without dead ends: 9570 [2021-11-25 19:16:29,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:16:29,160 INFO L933 BasicCegarLoop]: 3529 mSDtfsCounter, 3615 mSDsluCounter, 7948 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 10743 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:29,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3620 Valid, 10743 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1097 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2021-11-25 19:16:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9570 states. [2021-11-25 19:16:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9570 to 9566. [2021-11-25 19:16:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9566 states, 4497 states have (on average 1.2508338892595063) internal successors, (5625), 4637 states have internal predecessors, (5625), 4563 states have call successors, (4563), 505 states have call predecessors, (4563), 503 states have return successors, (4625), 4479 states have call predecessors, (4625), 4559 states have call successors, (4625) [2021-11-25 19:16:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9566 states to 9566 states and 14813 transitions. [2021-11-25 19:16:30,242 INFO L78 Accepts]: Start accepts. Automaton has 9566 states and 14813 transitions. Word has length 453 [2021-11-25 19:16:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:30,244 INFO L470 AbstractCegarLoop]: Abstraction has 9566 states and 14813 transitions. [2021-11-25 19:16:30,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:16:30,244 INFO L276 IsEmpty]: Start isEmpty. Operand 9566 states and 14813 transitions. [2021-11-25 19:16:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-25 19:16:30,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:30,264 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:30,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:16:30,265 INFO L402 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)] === [2021-11-25 19:16:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1753101879, now seen corresponding path program 1 times [2021-11-25 19:16:30,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:30,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138694752] [2021-11-25 19:16:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:30,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5473 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5459 trivial. 0 not checked. [2021-11-25 19:16:30,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:30,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138694752] [2021-11-25 19:16:30,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138694752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:30,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:30,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:16:30,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340443120] [2021-11-25 19:16:30,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:30,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:16:30,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:30,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:16:30,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:16:30,658 INFO L87 Difference]: Start difference. First operand 9566 states and 14813 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-25 19:16:33,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:36,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:16:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:37,873 INFO L93 Difference]: Finished difference Result 9574 states and 14819 transitions. [2021-11-25 19:16:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:16:37,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 462 [2021-11-25 19:16:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:37,948 INFO L225 Difference]: With dead ends: 9574 [2021-11-25 19:16:37,949 INFO L226 Difference]: Without dead ends: 9572 [2021-11-25 19:16:37,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:16:37,962 INFO L933 BasicCegarLoop]: 3523 mSDtfsCounter, 3741 mSDsluCounter, 7743 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3750 SdHoareTripleChecker+Valid, 10568 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:37,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3750 Valid, 10568 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1062 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 19:16:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9572 states. [2021-11-25 19:16:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9572 to 9570. [2021-11-25 19:16:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9570 states, 4500 states have (on average 1.2506666666666666) internal successors, (5628), 4640 states have internal predecessors, (5628), 4563 states have call successors, (4563), 506 states have call predecessors, (4563), 504 states have return successors, (4625), 4479 states have call predecessors, (4625), 4559 states have call successors, (4625) [2021-11-25 19:16:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 14816 transitions. [2021-11-25 19:16:38,951 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 14816 transitions. Word has length 462 [2021-11-25 19:16:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:38,952 INFO L470 AbstractCegarLoop]: Abstraction has 9570 states and 14816 transitions. [2021-11-25 19:16:38,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-25 19:16:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 14816 transitions. [2021-11-25 19:16:38,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-25 19:16:38,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:38,983 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:38,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:16:38,984 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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)] === [2021-11-25 19:16:38,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:38,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1773337917, now seen corresponding path program 1 times [2021-11-25 19:16:38,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:38,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071284826] [2021-11-25 19:16:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:38,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2021-11-25 19:16:39,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:39,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071284826] [2021-11-25 19:16:39,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071284826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:39,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:39,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:16:39,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855855247] [2021-11-25 19:16:39,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:39,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:16:39,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:39,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:16:39,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:16:39,413 INFO L87 Difference]: Start difference. First operand 9570 states and 14816 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:16:41,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:44,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:16:46,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:46,152 INFO L93 Difference]: Finished difference Result 28217 states and 43841 transitions. [2021-11-25 19:16:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:16:46,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 462 [2021-11-25 19:16:46,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:46,256 INFO L225 Difference]: With dead ends: 28217 [2021-11-25 19:16:46,256 INFO L226 Difference]: Without dead ends: 18720 [2021-11-25 19:16:46,347 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:16:46,347 INFO L933 BasicCegarLoop]: 4669 mSDtfsCounter, 3605 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 8135 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:46,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3612 Valid, 8135 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 757 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 19:16:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18720 states. [2021-11-25 19:16:48,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18720 to 18642. [2021-11-25 19:16:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18642 states, 8726 states have (on average 1.2468484987393995) internal successors, (10880), 9004 states have internal predecessors, (10880), 8937 states have call successors, (8937), 980 states have call predecessors, (8937), 976 states have return successors, (9187), 8769 states have call predecessors, (9187), 8933 states have call successors, (9187) [2021-11-25 19:16:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18642 states to 18642 states and 29004 transitions. [2021-11-25 19:16:48,131 INFO L78 Accepts]: Start accepts. Automaton has 18642 states and 29004 transitions. Word has length 462 [2021-11-25 19:16:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:48,133 INFO L470 AbstractCegarLoop]: Abstraction has 18642 states and 29004 transitions. [2021-11-25 19:16:48,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:16:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 18642 states and 29004 transitions. [2021-11-25 19:16:48,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-25 19:16:48,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:48,155 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:48,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:16:48,155 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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)] === [2021-11-25 19:16:48,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1180869103, now seen corresponding path program 1 times [2021-11-25 19:16:48,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:48,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589435327] [2021-11-25 19:16:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:48,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:48,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2021-11-25 19:16:48,536 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:48,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589435327] [2021-11-25 19:16:48,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589435327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:48,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:48,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:16:48,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738290454] [2021-11-25 19:16:48,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:48,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:16:48,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:48,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:16:48,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:16:48,539 INFO L87 Difference]: Start difference. First operand 18642 states and 29004 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:16:50,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:53,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:16:56,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:56,880 INFO L93 Difference]: Finished difference Result 55181 states and 86059 transitions. [2021-11-25 19:16:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:16:56,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 461 [2021-11-25 19:16:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:57,148 INFO L225 Difference]: With dead ends: 55181 [2021-11-25 19:16:57,148 INFO L226 Difference]: Without dead ends: 36612 [2021-11-25 19:16:57,241 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:16:57,241 INFO L933 BasicCegarLoop]: 4669 mSDtfsCounter, 3606 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 8135 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:57,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3613 Valid, 8135 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 755 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 19:16:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36612 states. [2021-11-25 19:17:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36612 to 36522. [2021-11-25 19:17:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36522 states, 17026 states have (on average 1.2411605779396218) internal successors, (21132), 17580 states have internal predecessors, (21132), 17569 states have call successors, (17569), 1932 states have call predecessors, (17569), 1924 states have return successors, (18269), 17233 states have call predecessors, (18269), 17565 states have call successors, (18269) [2021-11-25 19:17:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36522 states to 36522 states and 56970 transitions. [2021-11-25 19:17:00,336 INFO L78 Accepts]: Start accepts. Automaton has 36522 states and 56970 transitions. Word has length 461 [2021-11-25 19:17:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:17:00,337 INFO L470 AbstractCegarLoop]: Abstraction has 36522 states and 56970 transitions. [2021-11-25 19:17:00,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:17:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 36522 states and 56970 transitions. [2021-11-25 19:17:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2021-11-25 19:17:00,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:17:00,355 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 9, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:17:00,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:17:00,355 INFO L402 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)] === [2021-11-25 19:17:00,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:17:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1205016759, now seen corresponding path program 1 times [2021-11-25 19:17:00,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:17:00,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930858359] [2021-11-25 19:17:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:00,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:17:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5503 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5487 trivial. 0 not checked. [2021-11-25 19:17:00,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:17:00,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930858359] [2021-11-25 19:17:00,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930858359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:17:00,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:17:00,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:17:00,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976899738] [2021-11-25 19:17:00,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:17:00,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:17:00,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:17:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:17:00,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:17:00,796 INFO L87 Difference]: Start difference. First operand 36522 states and 56970 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-25 19:17:02,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:04,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:06,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:09,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:17:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:17:12,406 INFO L93 Difference]: Finished difference Result 36530 states and 56976 transitions. [2021-11-25 19:17:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:17:12,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 467 [2021-11-25 19:17:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:17:12,582 INFO L225 Difference]: With dead ends: 36530 [2021-11-25 19:17:12,582 INFO L226 Difference]: Without dead ends: 36528 [2021-11-25 19:17:12,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:17:12,604 INFO L933 BasicCegarLoop]: 3523 mSDtfsCounter, 3741 mSDsluCounter, 7743 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3749 SdHoareTripleChecker+Valid, 10568 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:17:12,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3749 Valid, 10568 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1061 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 19:17:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36528 states. [2021-11-25 19:17:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36528 to 36526. [2021-11-25 19:17:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36526 states, 17029 states have (on average 1.241118092665453) internal successors, (21135), 17583 states have internal predecessors, (21135), 17569 states have call successors, (17569), 1933 states have call predecessors, (17569), 1925 states have return successors, (18269), 17233 states have call predecessors, (18269), 17565 states have call successors, (18269) [2021-11-25 19:17:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36526 states to 36526 states and 56973 transitions. [2021-11-25 19:17:16,091 INFO L78 Accepts]: Start accepts. Automaton has 36526 states and 56973 transitions. Word has length 467 [2021-11-25 19:17:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:17:16,092 INFO L470 AbstractCegarLoop]: Abstraction has 36526 states and 56973 transitions. [2021-11-25 19:17:16,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-25 19:17:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 36526 states and 56973 transitions. [2021-11-25 19:17:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-25 19:17:16,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:17:16,104 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:17:16,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:17:16,104 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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)] === [2021-11-25 19:17:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:17:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1637088479, now seen corresponding path program 1 times [2021-11-25 19:17:16,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:17:16,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211464350] [2021-11-25 19:17:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:16,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:17:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2021-11-25 19:17:17,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:17:17,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211464350] [2021-11-25 19:17:17,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211464350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:17:17,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:17:17,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:17:17,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469508826] [2021-11-25 19:17:17,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:17:17,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:17:17,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:17:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:17:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:17:17,010 INFO L87 Difference]: Start difference. First operand 36526 states and 56973 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:17:20,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:17:22,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:27,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:17:27,838 INFO L93 Difference]: Finished difference Result 108369 states and 169282 transitions. [2021-11-25 19:17:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:17:27,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 463 [2021-11-25 19:17:27,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:17:28,388 INFO L225 Difference]: With dead ends: 108369 [2021-11-25 19:17:28,388 INFO L226 Difference]: Without dead ends: 71916 [2021-11-25 19:17:28,756 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:17:28,756 INFO L933 BasicCegarLoop]: 4676 mSDtfsCounter, 3618 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3622 SdHoareTripleChecker+Valid, 8142 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:17:28,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3622 Valid, 8142 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 758 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 19:17:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71916 states. [2021-11-25 19:17:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71916 to 71794. [2021-11-25 19:17:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71794 states, 33357 states have (on average 1.234133765026831) internal successors, (41167), 34455 states have internal predecessors, (41167), 34617 states have call successors, (34617), 3833 states have call predecessors, (34617), 3817 states have return successors, (36305), 33953 states have call predecessors, (36305), 34613 states have call successors, (36305) [2021-11-25 19:17:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71794 states to 71794 states and 112089 transitions. [2021-11-25 19:17:36,601 INFO L78 Accepts]: Start accepts. Automaton has 71794 states and 112089 transitions. Word has length 463 [2021-11-25 19:17:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:17:36,602 INFO L470 AbstractCegarLoop]: Abstraction has 71794 states and 112089 transitions. [2021-11-25 19:17:36,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:17:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 71794 states and 112089 transitions. [2021-11-25 19:17:36,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-11-25 19:17:36,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:17:36,615 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:17:36,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:17:36,616 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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)] === [2021-11-25 19:17:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:17:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash -165970737, now seen corresponding path program 1 times [2021-11-25 19:17:36,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:17:36,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161353500] [2021-11-25 19:17:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:36,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:17:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2021-11-25 19:17:37,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:17:37,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161353500] [2021-11-25 19:17:37,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161353500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:17:37,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:17:37,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:17:37,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115158032] [2021-11-25 19:17:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:17:37,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:17:37,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:17:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:17:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:17:37,089 INFO L87 Difference]: Start difference. First operand 71794 states and 112089 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:17:39,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:17:42,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:46,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []