./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-can-softing-softing.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2a992b8f7caf2083ee3b7e2acdd5fd118d6f91728d6dd0ef901811e301ef25da --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:02:23,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:02:23,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:02:23,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:02:23,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:02:23,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:02:23,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:02:23,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:02:23,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:02:23,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:02:23,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:02:23,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:02:23,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:02:23,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:02:23,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:02:23,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:02:23,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:02:23,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:02:23,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:02:23,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:02:23,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:02:23,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:02:23,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:02:23,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:02:23,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:02:23,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:02:23,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:02:23,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:02:23,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:02:23,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:02:23,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:02:23,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:02:23,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:02:23,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:02:23,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:02:23,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:02:23,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:02:23,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:02:23,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:02:23,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:02:23,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:02:23,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:02:23,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:02:23,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:02:23,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:02:23,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:02:23,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:02:23,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:02:23,171 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:02:23,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:02:23,172 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:02:23,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:02:23,173 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:02:23,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:02:23,173 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:02:23,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:02:23,174 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:02:23,174 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:02:23,174 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:02:23,174 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:02:23,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:02:23,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:02:23,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:02:23,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:02:23,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:02:23,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:02:23,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:02:23,177 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:02:23,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:02:23,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:02:23,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:02:23,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:02:23,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:02:23,179 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:02:23,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:02:23,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:02:23,179 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:02:23,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:02:23,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:02:23,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:02:23,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a992b8f7caf2083ee3b7e2acdd5fd118d6f91728d6dd0ef901811e301ef25da [2022-11-22 02:02:23,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:02:23,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:02:23,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:02:23,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:02:23,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:02:23,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2022-11-22 02:02:26,499 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:02:27,222 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:02:27,222 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2022-11-22 02:02:27,281 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/data/aad6d0eb3/d19b5464be0e446ebb728f100fb809fd/FLAG2919e448d [2022-11-22 02:02:27,299 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/data/aad6d0eb3/d19b5464be0e446ebb728f100fb809fd [2022-11-22 02:02:27,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:02:27,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:02:27,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:02:27,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:02:27,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:02:27,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:02:27" (1/1) ... [2022-11-22 02:02:27,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8b7bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:27, skipping insertion in model container [2022-11-22 02:02:27,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:02:27" (1/1) ... [2022-11-22 02:02:27,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:02:27,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:02:30,613 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375187,375200] [2022-11-22 02:02:30,618 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375356,375369] [2022-11-22 02:02:30,619 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375523,375536] [2022-11-22 02:02:30,620 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375691,375704] [2022-11-22 02:02:30,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:02:30,681 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:02:31,143 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375187,375200] [2022-11-22 02:02:31,144 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375356,375369] [2022-11-22 02:02:31,145 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375523,375536] [2022-11-22 02:02:31,146 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375691,375704] [2022-11-22 02:02:31,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:02:31,389 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:02:31,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31 WrapperNode [2022-11-22 02:02:31,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:02:31,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:02:31,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:02:31,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:02:31,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:31,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:31,751 INFO L138 Inliner]: procedures = 451, calls = 2363, calls flagged for inlining = 231, calls inlined = 218, statements flattened = 6496 [2022-11-22 02:02:31,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:02:31,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:02:31,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:02:31,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:02:31,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:31,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:31,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:31,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:31,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:32,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:32,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:32,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:32,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:02:32,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:02:32,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:02:32,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:02:32,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (1/1) ... [2022-11-22 02:02:32,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:02:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:02:32,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:02:32,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac77fa4-4650-4d36-8c16-e7c6cd8d210d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:02:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure softing_reset_chip [2022-11-22 02:02:32,217 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_reset_chip [2022-11-22 02:02:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-22 02:02:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_spin_of_softing [2022-11-22 02:02:32,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_spin_of_softing [2022-11-22 02:02:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:02:32,217 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:02:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 02:02:32,218 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 02:02:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:02:32,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:02:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 02:02:32,218 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 02:02:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2022-11-22 02:02:32,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2022-11-22 02:02:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-22 02:02:32,219 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-22 02:02:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:02:32,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:02:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-22 02:02:32,220 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-22 02:02:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 02:02:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 02:02:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-22 02:02:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-22 02:02:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-22 02:02:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-22 02:02:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 02:02:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure softing_fct_cmd [2022-11-22 02:02:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_fct_cmd [2022-11-22 02:02:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:02:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:02:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 02:02:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 02:02:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure canif_is_active [2022-11-22 02:02:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure canif_is_active [2022-11-22 02:02:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:02:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:02:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-22 02:02:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-22 02:02:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:02:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 02:02:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 02:02:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_open [2022-11-22 02:02:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_open [2022-11-22 02:02:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:02:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:02:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:02:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-22 02:02:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-22 02:02:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:02:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:02:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:02:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:02:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:02:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:02:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure open_candev [2022-11-22 02:02:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure open_candev [2022-11-22 02:02:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:02:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:02:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_rx [2022-11-22 02:02:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_rx [2022-11-22 02:02:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:02:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:02:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:02:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:02:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:02:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:02:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 02:02:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure softing_card_shutdown [2022-11-22 02:02:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_card_shutdown [2022-11-22 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:02:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:02:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:02:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:02:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 02:02:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-22 02:02:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-22 02:02:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:02:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:02:32,232 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_set [2022-11-22 02:02:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_set [2022-11-22 02:02:32,232 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_cleanup [2022-11-22 02:02:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_cleanup [2022-11-22 02:02:32,233 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:02:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:02:32,233 INFO L130 BoogieDeclarations]: Found specification of procedure softing_startstop [2022-11-22 02:02:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_startstop [2022-11-22 02:02:32,233 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-22 02:02:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-22 02:02:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_add_us [2022-11-22 02:02:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_add_us [2022-11-22 02:02:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-22 02:02:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-22 02:02:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure softing_bootloader_command [2022-11-22 02:02:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_bootloader_command [2022-11-22 02:02:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2022-11-22 02:02:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2022-11-22 02:02:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_62 [2022-11-22 02:02:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_62 [2022-11-22 02:02:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure softing_raw2ktime [2022-11-22 02:02:32,236 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_raw2ktime [2022-11-22 02:02:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-22 02:02:32,240 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-22 02:02:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:02:32,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:02:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure store_output [2022-11-22 02:02:32,241 INFO L138 BoogieDeclarations]: Found implementation of procedure store_output [2022-11-22 02:02:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:02:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:02:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure softing_pdev_probe [2022-11-22 02:02:32,242 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_pdev_probe [2022-11-22 02:02:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:02:32,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:02:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_stop [2022-11-22 02:02:32,248 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_stop [2022-11-22 02:02:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2022-11-22 02:02:32,248 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2022-11-22 02:02:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:02:32,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:02:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 02:02:32,248 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 02:02:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-22 02:02:32,249 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-22 02:02:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 02:02:32,249 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 02:02:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:02:32,251 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:02:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_softing_driver_exit_21_2 [2022-11-22 02:02:32,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_softing_driver_exit_21_2 [2022-11-22 02:02:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:02:32,252 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:02:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure softing_set_reset_dpram [2022-11-22 02:02:32,252 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_set_reset_dpram [2022-11-22 02:02:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:02:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:02:32,252 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:02:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:02:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-22 02:02:32,252 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-22 02:02:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:02:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 02:02:32,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 02:02:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:02:32,253 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:02:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:02:32,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:02:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-22 02:02:32,254 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-22 02:02:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 02:02:32,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 02:02:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure fw_parse [2022-11-22 02:02:32,254 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_parse [2022-11-22 02:02:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 02:02:32,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 02:02:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-22 02:02:32,255 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-22 02:02:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:02:32,255 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:02:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:02:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:02:32,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:02:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_61 [2022-11-22 02:02:32,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_61 [2022-11-22 02:02:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure _softing_fct_cmd [2022-11-22 02:02:32,256 INFO L138 BoogieDeclarations]: Found implementation of procedure _softing_fct_cmd [2022-11-22 02:02:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2022-11-22 02:02:32,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2022-11-22 02:02:32,257 INFO L130 BoogieDeclarations]: Found specification of procedure softing_error_reporting [2022-11-22 02:02:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_error_reporting [2022-11-22 02:02:32,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:02:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:02:32,257 INFO L130 BoogieDeclarations]: Found specification of procedure softing_pdev_remove [2022-11-22 02:02:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_pdev_remove [2022-11-22 02:02:32,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_spin_of_softing [2022-11-22 02:02:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_spin_of_softing [2022-11-22 02:02:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure softing_enable_irq [2022-11-22 02:02:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_enable_irq [2022-11-22 02:02:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:02:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure softing_load_fw [2022-11-22 02:02:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_load_fw [2022-11-22 02:02:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:02:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:02:33,336 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:02:33,339 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:02:35,413 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:02:38,655 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:02:38,785 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:02:40,372 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:02:40,372 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:02:40,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:02:40 BoogieIcfgContainer [2022-11-22 02:02:40,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:02:40,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:02:40,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:02:40,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:02:40,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:02:27" (1/3) ... [2022-11-22 02:02:40,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351ed029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:02:40, skipping insertion in model container [2022-11-22 02:02:40,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:02:31" (2/3) ... [2022-11-22 02:02:40,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351ed029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:02:40, skipping insertion in model container [2022-11-22 02:02:40,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:02:40" (3/3) ... [2022-11-22 02:02:40,385 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2022-11-22 02:02:40,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:02:40,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:02:40,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:02:40,505 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b6801e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:02:40,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:02:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 1696 states, 1056 states have (on average 1.3456439393939394) internal successors, (1421), 1070 states have internal predecessors, (1421), 555 states have call successors, (555), 83 states have call predecessors, (555), 82 states have return successors, (547), 547 states have call predecessors, (547), 547 states have call successors, (547) [2022-11-22 02:02:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-11-22 02:02:40,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:40,555 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:40,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:02:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1092394810, now seen corresponding path program 1 times [2022-11-22 02:02:40,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:40,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967154398] [2022-11-22 02:02:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:40,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2022-11-22 02:02:41,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:41,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967154398] [2022-11-22 02:02:41,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967154398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:41,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:41,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:02:41,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496450754] [2022-11-22 02:02:41,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:41,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:02:41,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:41,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:02:41,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:41,914 INFO L87 Difference]: Start difference. First operand has 1696 states, 1056 states have (on average 1.3456439393939394) internal successors, (1421), 1070 states have internal predecessors, (1421), 555 states have call successors, (555), 83 states have call predecessors, (555), 82 states have return successors, (547), 547 states have call predecessors, (547), 547 states have call successors, (547) 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, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-22 02:02:45,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:47,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:47,169 INFO L93 Difference]: Finished difference Result 4549 states and 6916 transitions. [2022-11-22 02:02:47,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:02:47,172 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, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2022-11-22 02:02:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:47,207 INFO L225 Difference]: With dead ends: 4549 [2022-11-22 02:02:47,207 INFO L226 Difference]: Without dead ends: 2915 [2022-11-22 02:02:47,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:47,223 INFO L413 NwaCegarLoop]: 2620 mSDtfsCounter, 1841 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 4859 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:47,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 4859 Invalid, 632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 627 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-22 02:02:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2022-11-22 02:02:47,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2888. [2022-11-22 02:02:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 1811 states have (on average 1.3473219215902816) internal successors, (2440), 1837 states have internal predecessors, (2440), 924 states have call successors, (924), 151 states have call predecessors, (924), 150 states have return successors, (959), 915 states have call predecessors, (959), 920 states have call successors, (959) [2022-11-22 02:02:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4323 transitions. [2022-11-22 02:02:47,541 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4323 transitions. Word has length 411 [2022-11-22 02:02:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:47,544 INFO L495 AbstractCegarLoop]: Abstraction has 2888 states and 4323 transitions. [2022-11-22 02:02:47,545 INFO L496 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, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-22 02:02:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4323 transitions. [2022-11-22 02:02:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-11-22 02:02:47,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:47,563 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:47,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:02:47,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:02:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1375566368, now seen corresponding path program 1 times [2022-11-22 02:02:47,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:47,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783274943] [2022-11-22 02:02:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:47,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2022-11-22 02:02:48,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:48,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783274943] [2022-11-22 02:02:48,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783274943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:48,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:48,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:02:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767270714] [2022-11-22 02:02:48,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:48,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:02:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:48,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:02:48,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:48,232 INFO L87 Difference]: Start difference. First operand 2888 states and 4323 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-22 02:02:51,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:53,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:53,548 INFO L93 Difference]: Finished difference Result 8172 states and 12226 transitions. [2022-11-22 02:02:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:02:53,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2022-11-22 02:02:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:53,592 INFO L225 Difference]: With dead ends: 8172 [2022-11-22 02:02:53,592 INFO L226 Difference]: Without dead ends: 5363 [2022-11-22 02:02:53,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:53,610 INFO L413 NwaCegarLoop]: 2589 mSDtfsCounter, 1922 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 4740 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:53,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 4740 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 635 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-22 02:02:53,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2022-11-22 02:02:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5358. [2022-11-22 02:02:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 3382 states have (on average 1.3494973388527498) internal successors, (4564), 3424 states have internal predecessors, (4564), 1682 states have call successors, (1682), 292 states have call predecessors, (1682), 291 states have return successors, (1758), 1670 states have call predecessors, (1758), 1678 states have call successors, (1758) [2022-11-22 02:02:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 8004 transitions. [2022-11-22 02:02:54,084 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 8004 transitions. Word has length 411 [2022-11-22 02:02:54,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:54,087 INFO L495 AbstractCegarLoop]: Abstraction has 5358 states and 8004 transitions. [2022-11-22 02:02:54,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-22 02:02:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 8004 transitions. [2022-11-22 02:02:54,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2022-11-22 02:02:54,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:54,101 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:54,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:02:54,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:02:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:54,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1934508353, now seen corresponding path program 1 times [2022-11-22 02:02:54,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:54,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247914444] [2022-11-22 02:02:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:54,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2022-11-22 02:02:54,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:54,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247914444] [2022-11-22 02:02:54,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247914444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:54,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:54,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:02:54,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721911601] [2022-11-22 02:02:54,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:54,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:02:54,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:54,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:02:54,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:02:54,579 INFO L87 Difference]: Start difference. First operand 5358 states and 8004 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-22 02:02:56,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:58,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:00,197 INFO L93 Difference]: Finished difference Result 15585 states and 23532 transitions. [2022-11-22 02:03:00,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:03:00,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 418 [2022-11-22 02:03:00,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:00,272 INFO L225 Difference]: With dead ends: 15585 [2022-11-22 02:03:00,272 INFO L226 Difference]: Without dead ends: 10306 [2022-11-22 02:03:00,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:03:00,303 INFO L413 NwaCegarLoop]: 2698 mSDtfsCounter, 2272 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 4884 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:00,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 4884 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-22 02:03:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2022-11-22 02:03:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 10276. [2022-11-22 02:03:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10276 states, 6491 states have (on average 1.349252811585272) internal successors, (8758), 6575 states have internal predecessors, (8758), 3215 states have call successors, (3215), 572 states have call predecessors, (3215), 567 states have return successors, (3615), 3182 states have call predecessors, (3615), 3211 states have call successors, (3615) [2022-11-22 02:03:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10276 states to 10276 states and 15588 transitions. [2022-11-22 02:03:01,032 INFO L78 Accepts]: Start accepts. Automaton has 10276 states and 15588 transitions. Word has length 418 [2022-11-22 02:03:01,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:01,033 INFO L495 AbstractCegarLoop]: Abstraction has 10276 states and 15588 transitions. [2022-11-22 02:03:01,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-22 02:03:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 10276 states and 15588 transitions. [2022-11-22 02:03:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-11-22 02:03:01,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:01,045 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:03:01,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:03:01,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:03:01,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash -305714601, now seen corresponding path program 1 times [2022-11-22 02:03:01,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:01,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112643327] [2022-11-22 02:03:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:01,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2022-11-22 02:03:02,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:02,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112643327] [2022-11-22 02:03:02,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112643327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:02,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:02,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:03:02,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163249354] [2022-11-22 02:03:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:02,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:03:02,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:02,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:03:02,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:03:02,254 INFO L87 Difference]: Start difference. First operand 10276 states and 15588 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 02:03:09,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:11,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:14,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:19,657 INFO L93 Difference]: Finished difference Result 30847 states and 46763 transitions. [2022-11-22 02:03:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:03:19,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 431 [2022-11-22 02:03:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:19,805 INFO L225 Difference]: With dead ends: 30847 [2022-11-22 02:03:19,806 INFO L226 Difference]: Without dead ends: 20650 [2022-11-22 02:03:19,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:03:19,861 INFO L413 NwaCegarLoop]: 3186 mSDtfsCounter, 8177 mSDsluCounter, 4028 mSDsCounter, 0 mSdLazyCounter, 3027 mSolverCounterSat, 2223 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8385 SdHoareTripleChecker+Valid, 7214 SdHoareTripleChecker+Invalid, 5252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2223 IncrementalHoareTripleChecker+Valid, 3027 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:19,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8385 Valid, 7214 Invalid, 5252 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2223 Valid, 3027 Invalid, 2 Unknown, 0 Unchecked, 16.2s Time] [2022-11-22 02:03:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20650 states. [2022-11-22 02:03:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20650 to 20580. [2022-11-22 02:03:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20580 states, 13045 states have (on average 1.3473361441165197) internal successors, (17576), 13237 states have internal predecessors, (17576), 6385 states have call successors, (6385), 1164 states have call predecessors, (6385), 1147 states have return successors, (7150), 6292 states have call predecessors, (7150), 6381 states have call successors, (7150) [2022-11-22 02:03:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20580 states to 20580 states and 31111 transitions. [2022-11-22 02:03:21,301 INFO L78 Accepts]: Start accepts. Automaton has 20580 states and 31111 transitions. Word has length 431 [2022-11-22 02:03:21,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:21,303 INFO L495 AbstractCegarLoop]: Abstraction has 20580 states and 31111 transitions. [2022-11-22 02:03:21,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 02:03:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 20580 states and 31111 transitions. [2022-11-22 02:03:21,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-22 02:03:21,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:21,313 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:03:21,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:03:21,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:03:21,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:21,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1785362596, now seen corresponding path program 1 times [2022-11-22 02:03:21,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:21,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968608502] [2022-11-22 02:03:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:21,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2022-11-22 02:03:21,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:21,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968608502] [2022-11-22 02:03:21,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968608502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:21,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:21,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:03:21,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829720254] [2022-11-22 02:03:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:21,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:03:21,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:21,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:03:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:03:21,770 INFO L87 Difference]: Start difference. First operand 20580 states and 31111 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:03:24,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:25,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:28,098 INFO L93 Difference]: Finished difference Result 48352 states and 72926 transitions. [2022-11-22 02:03:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:03:28,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 433 [2022-11-22 02:03:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:28,254 INFO L225 Difference]: With dead ends: 48352 [2022-11-22 02:03:28,254 INFO L226 Difference]: Without dead ends: 27851 [2022-11-22 02:03:28,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:03:28,333 INFO L413 NwaCegarLoop]: 3097 mSDtfsCounter, 2136 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 5225 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:28,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2136 Valid, 5225 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-22 02:03:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27851 states. [2022-11-22 02:03:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27851 to 27818. [2022-11-22 02:03:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27818 states, 17598 states have (on average 1.3386180247755426) internal successors, (23557), 17883 states have internal predecessors, (23557), 8677 states have call successors, (8677), 1566 states have call predecessors, (8677), 1540 states have return successors, (9294), 8521 states have call predecessors, (9294), 8673 states have call successors, (9294) [2022-11-22 02:03:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27818 states to 27818 states and 41528 transitions. [2022-11-22 02:03:30,229 INFO L78 Accepts]: Start accepts. Automaton has 27818 states and 41528 transitions. Word has length 433 [2022-11-22 02:03:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:30,232 INFO L495 AbstractCegarLoop]: Abstraction has 27818 states and 41528 transitions. [2022-11-22 02:03:30,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:03:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 27818 states and 41528 transitions. [2022-11-22 02:03:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-11-22 02:03:30,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:30,244 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 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] [2022-11-22 02:03:30,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:03:30,245 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:03:30,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash 153776902, now seen corresponding path program 1 times [2022-11-22 02:03:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:30,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893955721] [2022-11-22 02:03:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:30,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6279 trivial. 0 not checked. [2022-11-22 02:03:31,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:31,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893955721] [2022-11-22 02:03:31,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893955721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:31,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:31,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:03:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242914291] [2022-11-22 02:03:31,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:31,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:03:31,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:31,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:03:31,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:03:31,244 INFO L87 Difference]: Start difference. First operand 27818 states and 41528 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, (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) [2022-11-22 02:03:34,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:35,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:37,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:39,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:39,988 INFO L93 Difference]: Finished difference Result 27824 states and 41533 transitions. [2022-11-22 02:03:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:03:39,989 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, (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 453 [2022-11-22 02:03:39,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:40,117 INFO L225 Difference]: With dead ends: 27824 [2022-11-22 02:03:40,118 INFO L226 Difference]: Without dead ends: 27822 [2022-11-22 02:03:40,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:03:40,129 INFO L413 NwaCegarLoop]: 2181 mSDtfsCounter, 2385 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 6530 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:40,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2396 Valid, 6530 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-22 02:03:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27822 states. [2022-11-22 02:03:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27822 to 27822. [2022-11-22 02:03:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27822 states, 17601 states have (on average 1.338560309073348) internal successors, (23560), 17886 states have internal predecessors, (23560), 8677 states have call successors, (8677), 1567 states have call predecessors, (8677), 1541 states have return successors, (9294), 8521 states have call predecessors, (9294), 8673 states have call successors, (9294) [2022-11-22 02:03:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27822 states to 27822 states and 41531 transitions. [2022-11-22 02:03:41,812 INFO L78 Accepts]: Start accepts. Automaton has 27822 states and 41531 transitions. Word has length 453 [2022-11-22 02:03:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:41,813 INFO L495 AbstractCegarLoop]: Abstraction has 27822 states and 41531 transitions. [2022-11-22 02:03:41,813 INFO L496 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, (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) [2022-11-22 02:03:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 27822 states and 41531 transitions. [2022-11-22 02:03:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-11-22 02:03:41,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:41,826 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:03:41,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:03:41,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:03:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1727153413, now seen corresponding path program 1 times [2022-11-22 02:03:41,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:41,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229741431] [2022-11-22 02:03:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:41,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6281 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6279 trivial. 0 not checked. [2022-11-22 02:03:42,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:42,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229741431] [2022-11-22 02:03:42,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229741431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:42,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:42,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:03:42,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211323159] [2022-11-22 02:03:42,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:42,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:03:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:03:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:03:42,930 INFO L87 Difference]: Start difference. First operand 27822 states and 41531 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 02:03:46,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:50,016 INFO L93 Difference]: Finished difference Result 31051 states and 45754 transitions. [2022-11-22 02:03:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:03:50,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 458 [2022-11-22 02:03:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:50,154 INFO L225 Difference]: With dead ends: 31051 [2022-11-22 02:03:50,154 INFO L226 Difference]: Without dead ends: 31049 [2022-11-22 02:03:50,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:03:50,171 INFO L413 NwaCegarLoop]: 2334 mSDtfsCounter, 2001 mSDsluCounter, 5539 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 7873 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:50,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2013 Valid, 7873 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 02:03:50,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31049 states. [2022-11-22 02:03:52,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31049 to 31045. [2022-11-22 02:03:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31045 states, 19432 states have (on average 1.3264203375874846) internal successors, (25775), 19752 states have internal predecessors, (25775), 9674 states have call successors, (9674), 1957 states have call predecessors, (9674), 1936 states have return successors, (10301), 9515 states have call predecessors, (10301), 9670 states have call successors, (10301) [2022-11-22 02:03:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31045 states to 31045 states and 45750 transitions. [2022-11-22 02:03:52,221 INFO L78 Accepts]: Start accepts. Automaton has 31045 states and 45750 transitions. Word has length 458 [2022-11-22 02:03:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:52,222 INFO L495 AbstractCegarLoop]: Abstraction has 31045 states and 45750 transitions. [2022-11-22 02:03:52,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 02:03:52,222 INFO L276 IsEmpty]: Start isEmpty. Operand 31045 states and 45750 transitions. [2022-11-22 02:03:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-11-22 02:03:52,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:52,229 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:03:52,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:03:52,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:03:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:52,231 INFO L85 PathProgramCache]: Analyzing trace with hash -442109402, now seen corresponding path program 1 times [2022-11-22 02:03:52,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:52,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206834617] [2022-11-22 02:03:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:52,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6287 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6283 trivial. 0 not checked. [2022-11-22 02:03:53,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:53,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206834617] [2022-11-22 02:03:53,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206834617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:53,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:53,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:03:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223516067] [2022-11-22 02:03:53,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:53,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:03:53,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:03:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:03:53,509 INFO L87 Difference]: Start difference. First operand 31045 states and 45750 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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) [2022-11-22 02:03:55,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:58,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:01,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:01,475 INFO L93 Difference]: Finished difference Result 31051 states and 45755 transitions. [2022-11-22 02:04:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:04:01,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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 463 [2022-11-22 02:04:01,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:01,559 INFO L225 Difference]: With dead ends: 31051 [2022-11-22 02:04:01,560 INFO L226 Difference]: Without dead ends: 31049 [2022-11-22 02:04:01,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:04:01,568 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 2380 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:01,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 6533 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-22 02:04:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31049 states. [2022-11-22 02:04:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31049 to 31049. [2022-11-22 02:04:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31049 states, 19435 states have (on average 1.326369951119115) internal successors, (25778), 19755 states have internal predecessors, (25778), 9674 states have call successors, (9674), 1958 states have call predecessors, (9674), 1937 states have return successors, (10301), 9515 states have call predecessors, (10301), 9670 states have call successors, (10301) [2022-11-22 02:04:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31049 states to 31049 states and 45753 transitions. [2022-11-22 02:04:03,477 INFO L78 Accepts]: Start accepts. Automaton has 31049 states and 45753 transitions. Word has length 463 [2022-11-22 02:04:03,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:03,478 INFO L495 AbstractCegarLoop]: Abstraction has 31049 states and 45753 transitions. [2022-11-22 02:04:03,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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) [2022-11-22 02:04:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 31049 states and 45753 transitions. [2022-11-22 02:04:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-11-22 02:04:03,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:03,487 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:03,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:04:03,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:04:03,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash -884365667, now seen corresponding path program 1 times [2022-11-22 02:04:03,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:03,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344225782] [2022-11-22 02:04:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:03,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6304 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6298 trivial. 0 not checked. [2022-11-22 02:04:04,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:04,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344225782] [2022-11-22 02:04:04,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344225782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:04,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:04,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:04:04,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11831446] [2022-11-22 02:04:04,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:04,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:04:04,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:04,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:04:04,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:04:04,479 INFO L87 Difference]: Start difference. First operand 31049 states and 45753 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:04:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:11,601 INFO L93 Difference]: Finished difference Result 31055 states and 45758 transitions. [2022-11-22 02:04:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:04:11,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 471 [2022-11-22 02:04:11,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:11,697 INFO L225 Difference]: With dead ends: 31055 [2022-11-22 02:04:11,697 INFO L226 Difference]: Without dead ends: 31053 [2022-11-22 02:04:11,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:04:11,709 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 2379 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:11,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 6533 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 02:04:11,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31053 states. [2022-11-22 02:04:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31053 to 31053. [2022-11-22 02:04:13,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31053 states, 19438 states have (on average 1.3263195802037246) internal successors, (25781), 19758 states have internal predecessors, (25781), 9674 states have call successors, (9674), 1959 states have call predecessors, (9674), 1938 states have return successors, (10301), 9515 states have call predecessors, (10301), 9670 states have call successors, (10301) [2022-11-22 02:04:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31053 states to 31053 states and 45756 transitions. [2022-11-22 02:04:13,573 INFO L78 Accepts]: Start accepts. Automaton has 31053 states and 45756 transitions. Word has length 471 [2022-11-22 02:04:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:13,574 INFO L495 AbstractCegarLoop]: Abstraction has 31053 states and 45756 transitions. [2022-11-22 02:04:13,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:04:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 31053 states and 45756 transitions. [2022-11-22 02:04:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-22 02:04:13,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:13,583 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 5, 5, 5, 4, 4, 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] [2022-11-22 02:04:13,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:04:13,584 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:04:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:13,584 INFO L85 PathProgramCache]: Analyzing trace with hash 694025998, now seen corresponding path program 1 times [2022-11-22 02:04:13,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:13,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746487980] [2022-11-22 02:04:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:13,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6318 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6310 trivial. 0 not checked. [2022-11-22 02:04:14,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:14,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746487980] [2022-11-22 02:04:14,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746487980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:14,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:14,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:04:14,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980089590] [2022-11-22 02:04:14,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:14,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:04:14,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:14,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:04:14,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:04:14,543 INFO L87 Difference]: Start difference. First operand 31053 states and 45756 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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) [2022-11-22 02:04:17,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:21,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:22,441 INFO L93 Difference]: Finished difference Result 31059 states and 45761 transitions. [2022-11-22 02:04:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:04:22,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 476 [2022-11-22 02:04:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:22,528 INFO L225 Difference]: With dead ends: 31059 [2022-11-22 02:04:22,528 INFO L226 Difference]: Without dead ends: 31057 [2022-11-22 02:04:22,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:04:22,537 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 2379 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:22,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 6533 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-22 02:04:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31057 states. [2022-11-22 02:04:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31057 to 31057. [2022-11-22 02:04:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31057 states, 19441 states have (on average 1.3262692248341135) internal successors, (25784), 19761 states have internal predecessors, (25784), 9674 states have call successors, (9674), 1960 states have call predecessors, (9674), 1939 states have return successors, (10301), 9515 states have call predecessors, (10301), 9670 states have call successors, (10301) [2022-11-22 02:04:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31057 states to 31057 states and 45759 transitions. [2022-11-22 02:04:24,129 INFO L78 Accepts]: Start accepts. Automaton has 31057 states and 45759 transitions. Word has length 476 [2022-11-22 02:04:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:24,130 INFO L495 AbstractCegarLoop]: Abstraction has 31057 states and 45759 transitions. [2022-11-22 02:04:24,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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) [2022-11-22 02:04:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 31057 states and 45759 transitions. [2022-11-22 02:04:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-11-22 02:04:24,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:24,141 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:24,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:04:24,141 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:04:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:24,142 INFO L85 PathProgramCache]: Analyzing trace with hash -328448571, now seen corresponding path program 1 times [2022-11-22 02:04:24,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:24,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881040241] [2022-11-22 02:04:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6329 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6319 trivial. 0 not checked. [2022-11-22 02:04:25,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:25,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881040241] [2022-11-22 02:04:25,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881040241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:25,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:25,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:04:25,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978271440] [2022-11-22 02:04:25,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:25,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:04:25,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:25,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:04:25,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:04:25,045 INFO L87 Difference]: Start difference. First operand 31057 states and 45759 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:04:27,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:28,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:32,875 INFO L93 Difference]: Finished difference Result 31063 states and 45764 transitions. [2022-11-22 02:04:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:04:32,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 478 [2022-11-22 02:04:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:32,964 INFO L225 Difference]: With dead ends: 31063 [2022-11-22 02:04:32,964 INFO L226 Difference]: Without dead ends: 31061 [2022-11-22 02:04:32,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:04:32,974 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 2380 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:32,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 6533 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-22 02:04:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31061 states. [2022-11-22 02:04:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31061 to 31061. [2022-11-22 02:04:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31061 states, 19444 states have (on average 1.3262188850030858) internal successors, (25787), 19764 states have internal predecessors, (25787), 9674 states have call successors, (9674), 1961 states have call predecessors, (9674), 1940 states have return successors, (10301), 9515 states have call predecessors, (10301), 9670 states have call successors, (10301) [2022-11-22 02:04:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31061 states to 31061 states and 45762 transitions. [2022-11-22 02:04:34,738 INFO L78 Accepts]: Start accepts. Automaton has 31061 states and 45762 transitions. Word has length 478 [2022-11-22 02:04:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:34,740 INFO L495 AbstractCegarLoop]: Abstraction has 31061 states and 45762 transitions. [2022-11-22 02:04:34,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:04:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 31061 states and 45762 transitions. [2022-11-22 02:04:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-11-22 02:04:34,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:34,751 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 7, 6, 6, 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, 1, 1, 1, 1, 1] [2022-11-22 02:04:34,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:04:34,751 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:04:34,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:34,752 INFO L85 PathProgramCache]: Analyzing trace with hash 534263038, now seen corresponding path program 1 times [2022-11-22 02:04:34,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:34,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18830858] [2022-11-22 02:04:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6359 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6347 trivial. 0 not checked. [2022-11-22 02:04:35,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:35,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18830858] [2022-11-22 02:04:35,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18830858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:35,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:35,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:04:35,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796572608] [2022-11-22 02:04:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:35,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:04:35,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:04:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:04:35,548 INFO L87 Difference]: Start difference. First operand 31061 states and 45762 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-22 02:04:38,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:40,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:44,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:44,156 INFO L93 Difference]: Finished difference Result 31067 states and 45767 transitions. [2022-11-22 02:04:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:04:44,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 487 [2022-11-22 02:04:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:44,261 INFO L225 Difference]: With dead ends: 31067 [2022-11-22 02:04:44,261 INFO L226 Difference]: Without dead ends: 31065 [2022-11-22 02:04:44,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:04:44,273 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 2379 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:44,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 6533 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 942 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 02:04:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31065 states. [2022-11-22 02:04:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31065 to 31065. [2022-11-22 02:04:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31065 states, 19447 states have (on average 1.3261685607034503) internal successors, (25790), 19767 states have internal predecessors, (25790), 9674 states have call successors, (9674), 1962 states have call predecessors, (9674), 1941 states have return successors, (10301), 9515 states have call predecessors, (10301), 9670 states have call successors, (10301) [2022-11-22 02:04:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31065 states to 31065 states and 45765 transitions. [2022-11-22 02:04:46,274 INFO L78 Accepts]: Start accepts. Automaton has 31065 states and 45765 transitions. Word has length 487 [2022-11-22 02:04:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:46,274 INFO L495 AbstractCegarLoop]: Abstraction has 31065 states and 45765 transitions. [2022-11-22 02:04:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-22 02:04:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 31065 states and 45765 transitions. [2022-11-22 02:04:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-22 02:04:46,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:46,286 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:46,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:04:46,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:04:46,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1929828901, now seen corresponding path program 1 times [2022-11-22 02:04:46,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:46,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172721897] [2022-11-22 02:04:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:46,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6377 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6363 trivial. 0 not checked. [2022-11-22 02:04:47,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:47,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172721897] [2022-11-22 02:04:47,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172721897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:47,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:47,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:04:47,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935931443] [2022-11-22 02:04:47,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:47,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:04:47,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:47,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:04:47,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:04:47,096 INFO L87 Difference]: Start difference. First operand 31065 states and 45765 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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) [2022-11-22 02:04:49,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:51,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:54,701 INFO L93 Difference]: Finished difference Result 31071 states and 45770 transitions. [2022-11-22 02:04:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:04:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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 488 [2022-11-22 02:04:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:54,787 INFO L225 Difference]: With dead ends: 31071 [2022-11-22 02:04:54,787 INFO L226 Difference]: Without dead ends: 31069 [2022-11-22 02:04:54,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:04:54,798 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 2380 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:54,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 6533 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 02:04:54,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31069 states. [2022-11-22 02:04:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31069 to 31069. [2022-11-22 02:04:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31069 states, 19450 states have (on average 1.3261182519280206) internal successors, (25793), 19770 states have internal predecessors, (25793), 9674 states have call successors, (9674), 1963 states have call predecessors, (9674), 1942 states have return successors, (10301), 9515 states have call predecessors, (10301), 9670 states have call successors, (10301) [2022-11-22 02:04:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31069 states to 31069 states and 45768 transitions. [2022-11-22 02:04:56,798 INFO L78 Accepts]: Start accepts. Automaton has 31069 states and 45768 transitions. Word has length 488 [2022-11-22 02:04:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:56,798 INFO L495 AbstractCegarLoop]: Abstraction has 31069 states and 45768 transitions. [2022-11-22 02:04:56,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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) [2022-11-22 02:04:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31069 states and 45768 transitions. [2022-11-22 02:04:56,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2022-11-22 02:04:56,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:56,811 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 9, 8, 8, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:56,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:04:56,812 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:04:56,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1193103026, now seen corresponding path program 1 times [2022-11-22 02:04:56,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:56,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418494217] [2022-11-22 02:04:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:56,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6414 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6398 trivial. 0 not checked. [2022-11-22 02:04:57,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:57,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418494217] [2022-11-22 02:04:57,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418494217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:57,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:57,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:04:57,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199091082] [2022-11-22 02:04:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:57,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:04:57,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:57,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:04:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:04:57,553 INFO L87 Difference]: Start difference. First operand 31069 states and 45768 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-22 02:05:00,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:01,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:06,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:06,132 INFO L93 Difference]: Finished difference Result 31075 states and 45773 transitions. [2022-11-22 02:05:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:05:06,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 496 [2022-11-22 02:05:06,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:06,226 INFO L225 Difference]: With dead ends: 31075 [2022-11-22 02:05:06,226 INFO L226 Difference]: Without dead ends: 31073 [2022-11-22 02:05:06,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:05:06,239 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 2379 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:06,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2382 Valid, 6533 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 02:05:06,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31073 states. [2022-11-22 02:05:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31073 to 31073. [2022-11-22 02:05:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31073 states, 19453 states have (on average 1.326067958669614) internal successors, (25796), 19773 states have internal predecessors, (25796), 9674 states have call successors, (9674), 1964 states have call predecessors, (9674), 1943 states have return successors, (10301), 9515 states have call predecessors, (10301), 9670 states have call successors, (10301) [2022-11-22 02:05:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31073 states to 31073 states and 45771 transitions. [2022-11-22 02:05:08,246 INFO L78 Accepts]: Start accepts. Automaton has 31073 states and 45771 transitions. Word has length 496 [2022-11-22 02:05:08,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:08,246 INFO L495 AbstractCegarLoop]: Abstraction has 31073 states and 45771 transitions. [2022-11-22 02:05:08,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-22 02:05:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 31073 states and 45771 transitions. [2022-11-22 02:05:08,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-11-22 02:05:08,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:08,261 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 10, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:05:08,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:05:08,262 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:05:08,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:08,262 INFO L85 PathProgramCache]: Analyzing trace with hash -655493395, now seen corresponding path program 1 times [2022-11-22 02:05:08,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:08,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607241172] [2022-11-22 02:05:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:08,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6449 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6431 trivial. 0 not checked. [2022-11-22 02:05:09,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:09,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607241172] [2022-11-22 02:05:09,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607241172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:09,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:09,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:05:09,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735620859] [2022-11-22 02:05:09,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:09,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:05:09,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:05:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:05:09,214 INFO L87 Difference]: Start difference. First operand 31073 states and 45771 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-22 02:05:12,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:13,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:14,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:18,674 INFO L93 Difference]: Finished difference Result 31079 states and 45776 transitions. [2022-11-22 02:05:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:05:18,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 502 [2022-11-22 02:05:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:18,761 INFO L225 Difference]: With dead ends: 31079 [2022-11-22 02:05:18,761 INFO L226 Difference]: Without dead ends: 31077 [2022-11-22 02:05:18,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:05:18,774 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 2379 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:18,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2381 Valid, 6533 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-22 02:05:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31077 states. [2022-11-22 02:05:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31077 to 31077. [2022-11-22 02:05:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31077 states, 19456 states have (on average 1.3260176809210527) internal successors, (25799), 19776 states have internal predecessors, (25799), 9674 states have call successors, (9674), 1965 states have call predecessors, (9674), 1944 states have return successors, (10301), 9515 states have call predecessors, (10301), 9670 states have call successors, (10301) [2022-11-22 02:05:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31077 states to 31077 states and 45774 transitions. [2022-11-22 02:05:21,030 INFO L78 Accepts]: Start accepts. Automaton has 31077 states and 45774 transitions. Word has length 502 [2022-11-22 02:05:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:21,031 INFO L495 AbstractCegarLoop]: Abstraction has 31077 states and 45774 transitions. [2022-11-22 02:05:21,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-22 02:05:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 31077 states and 45774 transitions. [2022-11-22 02:05:21,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-11-22 02:05:21,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:21,044 INFO L195 NwaCegarLoop]: trace histogram [44, 39, 39, 39, 39, 39, 39, 5, 5, 3, 3, 3, 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] [2022-11-22 02:05:21,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:05:21,045 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:05:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash 847548277, now seen corresponding path program 1 times [2022-11-22 02:05:21,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:21,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563244055] [2022-11-22 02:05:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:21,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6380 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6368 trivial. 0 not checked. [2022-11-22 02:05:21,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:21,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563244055] [2022-11-22 02:05:21,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563244055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:21,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:21,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:05:21,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364577323] [2022-11-22 02:05:21,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:21,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:05:21,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:21,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:05:21,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:05:21,464 INFO L87 Difference]: Start difference. First operand 31077 states and 45774 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-22 02:05:24,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:27,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:31,586 INFO L93 Difference]: Finished difference Result 70950 states and 104568 transitions. [2022-11-22 02:05:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:05:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 499 [2022-11-22 02:05:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:31,717 INFO L225 Difference]: With dead ends: 70950 [2022-11-22 02:05:31,717 INFO L226 Difference]: Without dead ends: 40376 [2022-11-22 02:05:31,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:05:31,819 INFO L413 NwaCegarLoop]: 4146 mSDtfsCounter, 2286 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2286 SdHoareTripleChecker+Valid, 6304 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:31,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2286 Valid, 6304 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-22 02:05:31,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40376 states. [2022-11-22 02:05:34,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40376 to 40297. [2022-11-22 02:05:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40297 states, 25273 states have (on average 1.3267518695841412) internal successors, (33531), 25688 states have internal predecessors, (33531), 12519 states have call successors, (12519), 2532 states have call predecessors, (12519), 2502 states have return successors, (13344), 12308 states have call predecessors, (13344), 12515 states have call successors, (13344) [2022-11-22 02:05:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40297 states to 40297 states and 59394 transitions. [2022-11-22 02:05:34,812 INFO L78 Accepts]: Start accepts. Automaton has 40297 states and 59394 transitions. Word has length 499 [2022-11-22 02:05:34,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:34,812 INFO L495 AbstractCegarLoop]: Abstraction has 40297 states and 59394 transitions. [2022-11-22 02:05:34,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-22 02:05:34,813 INFO L276 IsEmpty]: Start isEmpty. Operand 40297 states and 59394 transitions. [2022-11-22 02:05:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-11-22 02:05:34,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:34,822 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 11, 10, 10, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:05:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 02:05:34,822 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:05:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:34,823 INFO L85 PathProgramCache]: Analyzing trace with hash 482457198, now seen corresponding path program 1 times [2022-11-22 02:05:34,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:34,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341979184] [2022-11-22 02:05:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:34,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6466 trivial. 0 not checked. [2022-11-22 02:05:35,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:35,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341979184] [2022-11-22 02:05:35,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341979184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:35,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:35,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:05:35,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875822353] [2022-11-22 02:05:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:35,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:05:35,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:35,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:05:35,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:05:35,570 INFO L87 Difference]: Start difference. First operand 40297 states and 59394 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-22 02:05:38,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:39,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:46,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:46,031 INFO L93 Difference]: Finished difference Result 41584 states and 60640 transitions. [2022-11-22 02:05:46,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:05:46,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 506 [2022-11-22 02:05:46,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:46,145 INFO L225 Difference]: With dead ends: 41584 [2022-11-22 02:05:46,145 INFO L226 Difference]: Without dead ends: 41580 [2022-11-22 02:05:46,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:05:46,159 INFO L413 NwaCegarLoop]: 2217 mSDtfsCounter, 2196 mSDsluCounter, 4642 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2197 SdHoareTripleChecker+Valid, 6859 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:46,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2197 Valid, 6859 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-22 02:05:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41580 states. [2022-11-22 02:05:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41580 to 41580. [2022-11-22 02:05:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41580 states, 25972 states have (on average 1.3213845679963037) internal successors, (34319), 26386 states have internal predecessors, (34319), 12746 states have call successors, (12746), 2890 states have call predecessors, (12746), 2859 states have return successors, (13571), 12535 states have call predecessors, (13571), 12742 states have call successors, (13571) [2022-11-22 02:05:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41580 states to 41580 states and 60636 transitions. [2022-11-22 02:05:49,549 INFO L78 Accepts]: Start accepts. Automaton has 41580 states and 60636 transitions. Word has length 506 [2022-11-22 02:05:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:49,550 INFO L495 AbstractCegarLoop]: Abstraction has 41580 states and 60636 transitions. [2022-11-22 02:05:49,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-22 02:05:49,550 INFO L276 IsEmpty]: Start isEmpty. Operand 41580 states and 60636 transitions. [2022-11-22 02:05:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-11-22 02:05:49,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:49,560 INFO L195 NwaCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 12, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:05:49,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:05:49,560 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:05:49,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash 444504397, now seen corresponding path program 1 times [2022-11-22 02:05:49,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:49,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12716552] [2022-11-22 02:05:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:49,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6529 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6507 trivial. 0 not checked. [2022-11-22 02:05:50,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:50,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12716552] [2022-11-22 02:05:50,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12716552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:50,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:50,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:05:50,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475923373] [2022-11-22 02:05:50,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:50,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:05:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:05:50,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:05:50,227 INFO L87 Difference]: Start difference. First operand 41580 states and 60636 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-22 02:05:53,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:58,648 INFO L93 Difference]: Finished difference Result 41584 states and 60638 transitions. [2022-11-22 02:05:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:05:58,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 512 [2022-11-22 02:05:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:58,774 INFO L225 Difference]: With dead ends: 41584 [2022-11-22 02:05:58,775 INFO L226 Difference]: Without dead ends: 41281 [2022-11-22 02:05:58,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:05:58,790 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 1996 mSDsluCounter, 5538 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 7870 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:58,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 7870 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1038 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-22 02:05:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41281 states.