./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS --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 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 --- 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-8393723 [2022-11-19 08:34:16,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:34:16,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:34:16,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:34:16,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:34:16,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:34:16,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:34:16,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:34:16,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:34:16,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:34:16,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:34:16,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:34:16,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:34:16,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:34:16,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:34:16,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:34:16,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:34:16,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:34:16,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:34:16,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:34:16,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:34:16,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:34:16,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:34:16,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:34:16,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:34:16,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:34:16,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:34:16,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:34:16,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:34:16,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:34:16,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:34:16,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:34:16,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:34:16,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:34:16,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:34:16,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:34:16,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:34:16,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:34:16,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:34:16,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:34:16,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:34:16,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:34:16,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:34:16,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:34:16,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:34:16,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:34:16,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:34:16,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:34:16,269 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:34:16,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:34:16,270 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:34:16,270 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:34:16,271 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:34:16,272 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:34:16,272 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:34:16,272 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:34:16,273 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:34:16,273 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:34:16,273 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:34:16,273 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:34:16,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:34:16,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:34:16,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:34:16,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:34:16,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:34:16,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:34:16,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:34:16,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:34:16,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:34:16,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:34:16,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:34:16,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:34:16,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:34:16,280 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:34:16,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:34:16,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:34:16,280 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:34:16,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:34:16,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:34:16,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:34:16,281 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 [2022-11-19 08:34:16,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:34:16,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:34:16,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:34:16,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:34:16,624 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:34:16,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2022-11-19 08:34:16,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/data/a07fb8cf1/82472709a6e14dd19e4fde8f5bf346a8/FLAGb3a6abf40 [2022-11-19 08:34:17,659 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:34:17,659 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2022-11-19 08:34:17,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/data/a07fb8cf1/82472709a6e14dd19e4fde8f5bf346a8/FLAGb3a6abf40 [2022-11-19 08:34:18,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/data/a07fb8cf1/82472709a6e14dd19e4fde8f5bf346a8 [2022-11-19 08:34:18,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:34:18,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:34:18,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:34:18,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:34:18,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:34:18,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:34:18" (1/1) ... [2022-11-19 08:34:18,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e0d281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:18, skipping insertion in model container [2022-11-19 08:34:18,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:34:18" (1/1) ... [2022-11-19 08:34:18,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:34:18,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:34:20,667 WARN L234 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2022-11-19 08:34:20,676 WARN L234 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2022-11-19 08:34:20,677 WARN L234 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2022-11-19 08:34:20,677 WARN L234 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2022-11-19 08:34:20,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:34:20,762 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:34:21,231 WARN L234 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2022-11-19 08:34:21,232 WARN L234 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2022-11-19 08:34:21,233 WARN L234 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2022-11-19 08:34:21,233 WARN L234 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_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2022-11-19 08:34:21,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:34:21,411 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:34:21,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21 WrapperNode [2022-11-19 08:34:21,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:34:21,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:34:21,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:34:21,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:34:21,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:21,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:21,722 INFO L138 Inliner]: procedures = 340, calls = 1537, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4145 [2022-11-19 08:34:21,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:34:21,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:34:21,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:34:21,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:34:21,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:21,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:21,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:21,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:21,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:21,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:22,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:22,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:22,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:34:22,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:34:22,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:34:22,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:34:22,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (1/1) ... [2022-11-19 08:34:22,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:34:22,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:22,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:34:22,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:34:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:34:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:34:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:34:22,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:34:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:34:22,168 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:34:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 08:34:22,168 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 08:34:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-19 08:34:22,168 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-19 08:34:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:34:22,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:34:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2022-11-19 08:34:22,169 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2022-11-19 08:34:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 08:34:22,169 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 08:34:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-11-19 08:34:22,170 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-11-19 08:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2022-11-19 08:34:22,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2022-11-19 08:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-19 08:34:22,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-19 08:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-19 08:34:22,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-19 08:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2022-11-19 08:34:22,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2022-11-19 08:34:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:34:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:34:22,171 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:34:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:34:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:34:22,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:34:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2022-11-19 08:34:22,172 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2022-11-19 08:34:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2022-11-19 08:34:22,172 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2022-11-19 08:34:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:34:22,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:34:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-19 08:34:22,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-19 08:34:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2022-11-19 08:34:22,173 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2022-11-19 08:34:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-11-19 08:34:22,173 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-11-19 08:34:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:34:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:34:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-19 08:34:22,173 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-19 08:34:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-19 08:34:22,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-19 08:34:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:34:22,174 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:34:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:34:22,174 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:34:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2022-11-19 08:34:22,174 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2022-11-19 08:34:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:34:22,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:34:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 08:34:22,175 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 08:34:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-19 08:34:22,175 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-19 08:34:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2022-11-19 08:34:22,175 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2022-11-19 08:34:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 08:34:22,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 08:34:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-19 08:34:22,176 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-19 08:34:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2022-11-19 08:34:22,176 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2022-11-19 08:34:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:34:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2022-11-19 08:34:22,176 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2022-11-19 08:34:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:34:22,176 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:34:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2022-11-19 08:34:22,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2022-11-19 08:34:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:34:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:34:22,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:34:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2022-11-19 08:34:22,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2022-11-19 08:34:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2022-11-19 08:34:22,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2022-11-19 08:34:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 08:34:22,178 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 08:34:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:34:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-19 08:34:22,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-19 08:34:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2022-11-19 08:34:22,178 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2022-11-19 08:34:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-19 08:34:22,178 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-19 08:34:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:34:22,179 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:34:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 08:34:22,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 08:34:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2022-11-19 08:34:22,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2022-11-19 08:34:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-19 08:34:22,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-19 08:34:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2022-11-19 08:34:22,180 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2022-11-19 08:34:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:34:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2022-11-19 08:34:22,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2022-11-19 08:34:22,184 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2022-11-19 08:34:22,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2022-11-19 08:34:22,186 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2022-11-19 08:34:22,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2022-11-19 08:34:22,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2022-11-19 08:34:22,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2022-11-19 08:34:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:34:22,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:34:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2022-11-19 08:34:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2022-11-19 08:34:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:34:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 08:34:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 08:34:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 08:34:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 08:34:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-19 08:34:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-19 08:34:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-19 08:34:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-19 08:34:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2022-11-19 08:34:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2022-11-19 08:34:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:34:22,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:34:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:34:22,193 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:34:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:34:22,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:34:22,193 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-19 08:34:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-19 08:34:22,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:34:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:34:22,194 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:34:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:34:22,194 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2022-11-19 08:34:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2022-11-19 08:34:22,194 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 08:34:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 08:34:22,194 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2022-11-19 08:34:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2022-11-19 08:34:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:34:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:34:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-19 08:34:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-19 08:34:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 08:34:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 08:34:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:34:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:34:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2022-11-19 08:34:22,196 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2022-11-19 08:34:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2022-11-19 08:34:22,196 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2022-11-19 08:34:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:34:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-19 08:34:22,196 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-19 08:34:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2022-11-19 08:34:22,196 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2022-11-19 08:34:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-19 08:34:22,197 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-19 08:34:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:34:22,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:34:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:34:22,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:34:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 08:34:22,197 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 08:34:23,000 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:34:23,004 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:34:23,676 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:35:23,072 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 08:35:24,014 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:35:26,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:35:26,563 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:35:26,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:35:26 BoogieIcfgContainer [2022-11-19 08:35:26,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:35:26,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:35:26,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:35:26,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:35:26,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:34:18" (1/3) ... [2022-11-19 08:35:26,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5241bdfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:35:26, skipping insertion in model container [2022-11-19 08:35:26,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:21" (2/3) ... [2022-11-19 08:35:26,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5241bdfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:35:26, skipping insertion in model container [2022-11-19 08:35:26,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:35:26" (3/3) ... [2022-11-19 08:35:26,580 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2022-11-19 08:35:26,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:35:26,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 08:35:26,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:35:26,724 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;@f199d48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:35:26,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 08:35:26,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) [2022-11-19 08:35:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 08:35:26,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:26,754 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:26,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:35:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash -83729405, now seen corresponding path program 1 times [2022-11-19 08:35:26,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:26,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969510812] [2022-11-19 08:35:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:26,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-19 08:35:28,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:28,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969510812] [2022-11-19 08:35:28,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969510812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:28,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:28,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:35:28,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428839603] [2022-11-19 08:35:28,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:28,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:35:28,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:35:28,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:28,451 INFO L87 Difference]: Start difference. First operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 08:35:30,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:34,942 INFO L93 Difference]: Finished difference Result 3134 states and 4649 transitions. [2022-11-19 08:35:34,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:35:34,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2022-11-19 08:35:34,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:34,988 INFO L225 Difference]: With dead ends: 3134 [2022-11-19 08:35:34,991 INFO L226 Difference]: Without dead ends: 2035 [2022-11-19 08:35:35,010 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 [2022-11-19 08:35:35,014 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1437 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:35,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2991 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 489 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 08:35:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-19 08:35:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2016. [2022-11-19 08:35:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1227 states have (on average 1.321923390383048) internal successors, (1622), 1272 states have internal predecessors, (1622), 641 states have call successors, (641), 149 states have call predecessors, (641), 145 states have return successors, (679), 617 states have call predecessors, (679), 637 states have call successors, (679) [2022-11-19 08:35:35,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2942 transitions. [2022-11-19 08:35:35,284 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2942 transitions. Word has length 131 [2022-11-19 08:35:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:35,285 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2942 transitions. [2022-11-19 08:35:35,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 08:35:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2942 transitions. [2022-11-19 08:35:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-19 08:35:35,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:35,299 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2022-11-19 08:35:35,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:35:35,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:35:35,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash 841126436, now seen corresponding path program 1 times [2022-11-19 08:35:35,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:35,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022306725] [2022-11-19 08:35:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-19 08:35:36,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:36,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022306725] [2022-11-19 08:35:36,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022306725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:36,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:36,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:35:36,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615025995] [2022-11-19 08:35:36,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:36,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:35:36,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:36,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:35:36,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:36,271 INFO L87 Difference]: Start difference. First operand 2016 states and 2942 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 08:35:38,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:43,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:43,348 INFO L93 Difference]: Finished difference Result 5915 states and 8631 transitions. [2022-11-19 08:35:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:35:43,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2022-11-19 08:35:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:43,380 INFO L225 Difference]: With dead ends: 5915 [2022-11-19 08:35:43,381 INFO L226 Difference]: Without dead ends: 3922 [2022-11-19 08:35:43,393 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 [2022-11-19 08:35:43,394 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1465 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:43,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2911 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-19 08:35:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2022-11-19 08:35:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3918. [2022-11-19 08:35:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 2402 states have (on average 1.3201498751040799) internal successors, (3171), 2484 states have internal predecessors, (3171), 1226 states have call successors, (1226), 294 states have call predecessors, (1226), 287 states have return successors, (1306), 1185 states have call predecessors, (1306), 1222 states have call successors, (1306) [2022-11-19 08:35:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5703 transitions. [2022-11-19 08:35:43,623 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5703 transitions. Word has length 134 [2022-11-19 08:35:43,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:43,623 INFO L495 AbstractCegarLoop]: Abstraction has 3918 states and 5703 transitions. [2022-11-19 08:35:43,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 08:35:43,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5703 transitions. [2022-11-19 08:35:43,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 08:35:43,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:43,627 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:43,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:35:43,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:35:43,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:43,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1159948912, now seen corresponding path program 1 times [2022-11-19 08:35:43,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:43,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442305544] [2022-11-19 08:35:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:43,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-19 08:35:44,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:44,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442305544] [2022-11-19 08:35:44,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442305544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:44,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:44,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:35:44,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117722459] [2022-11-19 08:35:44,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:44,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:35:44,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:35:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:44,394 INFO L87 Difference]: Start difference. First operand 3918 states and 5703 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 08:35:46,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:51,470 INFO L93 Difference]: Finished difference Result 11272 states and 16329 transitions. [2022-11-19 08:35:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:35:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-11-19 08:35:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:51,529 INFO L225 Difference]: With dead ends: 11272 [2022-11-19 08:35:51,530 INFO L226 Difference]: Without dead ends: 7377 [2022-11-19 08:35:51,559 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 [2022-11-19 08:35:51,563 INFO L413 NwaCegarLoop]: 1735 mSDtfsCounter, 1324 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:51,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 2998 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 589 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-19 08:35:51,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2022-11-19 08:35:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 7352. [2022-11-19 08:35:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 4474 states have (on average 1.2988377291014752) internal successors, (5811), 4644 states have internal predecessors, (5811), 2306 states have call successors, (2306), 582 states have call predecessors, (2306), 569 states have return successors, (2406), 2217 states have call predecessors, (2406), 2302 states have call successors, (2406) [2022-11-19 08:35:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10523 transitions. [2022-11-19 08:35:52,116 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10523 transitions. Word has length 133 [2022-11-19 08:35:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:52,117 INFO L495 AbstractCegarLoop]: Abstraction has 7352 states and 10523 transitions. [2022-11-19 08:35:52,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 08:35:52,118 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10523 transitions. [2022-11-19 08:35:52,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-19 08:35:52,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:52,121 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:52,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:35:52,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:35:52,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:52,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1460443048, now seen corresponding path program 1 times [2022-11-19 08:35:52,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:52,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727459196] [2022-11-19 08:35:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:52,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-19 08:35:52,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727459196] [2022-11-19 08:35:52,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727459196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:52,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:52,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:35:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428994429] [2022-11-19 08:35:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:52,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:35:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:35:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:52,793 INFO L87 Difference]: Start difference. First operand 7352 states and 10523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 08:35:54,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:59,520 INFO L93 Difference]: Finished difference Result 17756 states and 25319 transitions. [2022-11-19 08:35:59,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:35:59,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2022-11-19 08:35:59,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:59,601 INFO L225 Difference]: With dead ends: 17756 [2022-11-19 08:35:59,601 INFO L226 Difference]: Without dead ends: 10427 [2022-11-19 08:35:59,643 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 [2022-11-19 08:35:59,644 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 1418 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:59,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 2924 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 08:35:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10427 states. [2022-11-19 08:36:00,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10427 to 10402. [2022-11-19 08:36:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10402 states, 6318 states have (on average 1.2841088952200064) internal successors, (8113), 6566 states have internal predecessors, (8113), 3234 states have call successors, (3234), 866 states have call predecessors, (3234), 847 states have return successors, (3378), 3091 states have call predecessors, (3378), 3230 states have call successors, (3378) [2022-11-19 08:36:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 14725 transitions. [2022-11-19 08:36:00,268 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 14725 transitions. Word has length 134 [2022-11-19 08:36:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:00,270 INFO L495 AbstractCegarLoop]: Abstraction has 10402 states and 14725 transitions. [2022-11-19 08:36:00,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 08:36:00,272 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 14725 transitions. [2022-11-19 08:36:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-19 08:36:00,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:00,275 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:36:00,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:36:00,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:36:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash 848871087, now seen corresponding path program 1 times [2022-11-19 08:36:00,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:00,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942621391] [2022-11-19 08:36:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-19 08:36:01,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:01,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942621391] [2022-11-19 08:36:01,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942621391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:01,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:01,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:36:01,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135043294] [2022-11-19 08:36:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:01,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:36:01,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:36:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:36:01,996 INFO L87 Difference]: Start difference. First operand 10402 states and 14725 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 08:36:04,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:19,076 INFO L93 Difference]: Finished difference Result 41025 states and 58566 transitions. [2022-11-19 08:36:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:36:19,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-11-19 08:36:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:19,263 INFO L225 Difference]: With dead ends: 41025 [2022-11-19 08:36:19,263 INFO L226 Difference]: Without dead ends: 30646 [2022-11-19 08:36:19,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:36:19,323 INFO L413 NwaCegarLoop]: 2020 mSDtfsCounter, 5906 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 2103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6002 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2103 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:19,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6002 Valid, 4493 Invalid, 4043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2103 Valid, 1939 Invalid, 1 Unknown, 0 Unchecked, 15.7s Time] [2022-11-19 08:36:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30646 states. [2022-11-19 08:36:21,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30646 to 30274. [2022-11-19 08:36:21,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30274 states, 18354 states have (on average 1.2828266317968835) internal successors, (23545), 19166 states have internal predecessors, (23545), 9426 states have call successors, (9426), 2570 states have call predecessors, (9426), 2491 states have return successors, (10386), 8903 states have call predecessors, (10386), 9422 states have call successors, (10386) [2022-11-19 08:36:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30274 states to 30274 states and 43357 transitions. [2022-11-19 08:36:21,694 INFO L78 Accepts]: Start accepts. Automaton has 30274 states and 43357 transitions. Word has length 140 [2022-11-19 08:36:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:21,695 INFO L495 AbstractCegarLoop]: Abstraction has 30274 states and 43357 transitions. [2022-11-19 08:36:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 08:36:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 30274 states and 43357 transitions. [2022-11-19 08:36:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-19 08:36:21,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:21,700 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:36:21,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:36:21,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:36:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash -831944092, now seen corresponding path program 1 times [2022-11-19 08:36:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:21,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136118810] [2022-11-19 08:36:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:21,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-19 08:36:22,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:22,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136118810] [2022-11-19 08:36:22,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136118810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:22,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:22,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:36:22,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192393402] [2022-11-19 08:36:22,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:22,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:36:22,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:36:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:36:22,596 INFO L87 Difference]: Start difference. First operand 30274 states and 43357 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 08:36:24,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:29,889 INFO L93 Difference]: Finished difference Result 72990 states and 104276 transitions. [2022-11-19 08:36:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:36:29,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2022-11-19 08:36:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:30,140 INFO L225 Difference]: With dead ends: 72990 [2022-11-19 08:36:30,140 INFO L226 Difference]: Without dead ends: 42739 [2022-11-19 08:36:30,251 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 [2022-11-19 08:36:30,252 INFO L413 NwaCegarLoop]: 1788 mSDtfsCounter, 1433 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:30,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 3079 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 578 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-19 08:36:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42739 states. [2022-11-19 08:36:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42739 to 42674. [2022-11-19 08:36:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42674 states, 25978 states have (on average 1.277850488875202) internal successors, (33196), 27195 states have internal predecessors, (33196), 13104 states have call successors, (13104), 3693 states have call predecessors, (13104), 3589 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2022-11-19 08:36:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42674 states to 42674 states and 60588 transitions. [2022-11-19 08:36:33,367 INFO L78 Accepts]: Start accepts. Automaton has 42674 states and 60588 transitions. Word has length 153 [2022-11-19 08:36:33,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:33,368 INFO L495 AbstractCegarLoop]: Abstraction has 42674 states and 60588 transitions. [2022-11-19 08:36:33,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 08:36:33,369 INFO L276 IsEmpty]: Start isEmpty. Operand 42674 states and 60588 transitions. [2022-11-19 08:36:33,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-19 08:36:33,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:33,373 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2022-11-19 08:36:33,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:36:33,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:36:33,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:33,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1078530907, now seen corresponding path program 1 times [2022-11-19 08:36:33,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:33,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456549797] [2022-11-19 08:36:33,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:33,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-19 08:36:35,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:35,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456549797] [2022-11-19 08:36:35,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456549797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:35,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:35,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:36:35,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625071767] [2022-11-19 08:36:35,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:35,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:36:35,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:35,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:36:35,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:36:35,727 INFO L87 Difference]: Start difference. First operand 42674 states and 60588 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 08:36:37,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:43,688 INFO L93 Difference]: Finished difference Result 42680 states and 60593 transitions. [2022-11-19 08:36:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:36:43,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 178 [2022-11-19 08:36:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:43,894 INFO L225 Difference]: With dead ends: 42680 [2022-11-19 08:36:43,895 INFO L226 Difference]: Without dead ends: 42678 [2022-11-19 08:36:43,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:36:43,919 INFO L413 NwaCegarLoop]: 1313 mSDtfsCounter, 1513 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:43,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 3934 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 08:36:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42678 states. [2022-11-19 08:36:46,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42678 to 42678. [2022-11-19 08:36:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42678 states, 25981 states have (on average 1.277818405758054) internal successors, (33199), 27198 states have internal predecessors, (33199), 13104 states have call successors, (13104), 3694 states have call predecessors, (13104), 3590 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2022-11-19 08:36:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42678 states to 42678 states and 60591 transitions. [2022-11-19 08:36:46,896 INFO L78 Accepts]: Start accepts. Automaton has 42678 states and 60591 transitions. Word has length 178 [2022-11-19 08:36:46,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:46,897 INFO L495 AbstractCegarLoop]: Abstraction has 42678 states and 60591 transitions. [2022-11-19 08:36:46,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 08:36:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 42678 states and 60591 transitions. [2022-11-19 08:36:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-19 08:36:46,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:46,901 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 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] [2022-11-19 08:36:46,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:36:46,901 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:36:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 841687930, now seen corresponding path program 1 times [2022-11-19 08:36:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:46,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338365506] [2022-11-19 08:36:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:46,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-19 08:36:48,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:48,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338365506] [2022-11-19 08:36:48,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338365506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:48,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:48,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:36:48,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280994275] [2022-11-19 08:36:48,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:48,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:36:48,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:48,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:36:48,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:36:48,911 INFO L87 Difference]: Start difference. First operand 42678 states and 60591 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-19 08:36:50,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:57,605 INFO L93 Difference]: Finished difference Result 42684 states and 60596 transitions. [2022-11-19 08:36:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:36:57,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 184 [2022-11-19 08:36:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:57,932 INFO L225 Difference]: With dead ends: 42684 [2022-11-19 08:36:57,932 INFO L226 Difference]: Without dead ends: 42682 [2022-11-19 08:36:57,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:36:57,953 INFO L413 NwaCegarLoop]: 1316 mSDtfsCounter, 1508 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:57,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 3937 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-19 08:36:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42682 states. [2022-11-19 08:37:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42682 to 42682. [2022-11-19 08:37:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42682 states, 25984 states have (on average 1.2777863300492611) internal successors, (33202), 27201 states have internal predecessors, (33202), 13104 states have call successors, (13104), 3695 states have call predecessors, (13104), 3591 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2022-11-19 08:37:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42682 states to 42682 states and 60594 transitions. [2022-11-19 08:37:00,790 INFO L78 Accepts]: Start accepts. Automaton has 42682 states and 60594 transitions. Word has length 184 [2022-11-19 08:37:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:00,791 INFO L495 AbstractCegarLoop]: Abstraction has 42682 states and 60594 transitions. [2022-11-19 08:37:00,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-19 08:37:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 42682 states and 60594 transitions. [2022-11-19 08:37:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-19 08:37:00,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:00,798 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:00,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:37:00,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:37:00,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:00,799 INFO L85 PathProgramCache]: Analyzing trace with hash 525085584, now seen corresponding path program 1 times [2022-11-19 08:37:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:00,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580973194] [2022-11-19 08:37:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:00,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2022-11-19 08:37:02,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:02,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580973194] [2022-11-19 08:37:02,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580973194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:02,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:02,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:37:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225332679] [2022-11-19 08:37:02,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:02,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:37:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:37:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:02,768 INFO L87 Difference]: Start difference. First operand 42682 states and 60594 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 08:37:04,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:12,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:12,133 INFO L93 Difference]: Finished difference Result 47743 states and 66114 transitions. [2022-11-19 08:37:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:37:12,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 187 [2022-11-19 08:37:12,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:12,321 INFO L225 Difference]: With dead ends: 47743 [2022-11-19 08:37:12,321 INFO L226 Difference]: Without dead ends: 47739 [2022-11-19 08:37:12,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:37:12,343 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 1105 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 4572 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:12,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 4572 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 824 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-19 08:37:12,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47739 states. [2022-11-19 08:37:15,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47739 to 47739. [2022-11-19 08:37:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47739 states, 28676 states have (on average 1.2646115218301017) internal successors, (36264), 29938 states have internal predecessors, (36264), 14331 states have call successors, (14331), 4855 states have call predecessors, (14331), 4729 states have return successors, (15515), 13532 states have call predecessors, (15515), 14327 states have call successors, (15515) [2022-11-19 08:37:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47739 states to 47739 states and 66110 transitions. [2022-11-19 08:37:15,344 INFO L78 Accepts]: Start accepts. Automaton has 47739 states and 66110 transitions. Word has length 187 [2022-11-19 08:37:15,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:15,345 INFO L495 AbstractCegarLoop]: Abstraction has 47739 states and 66110 transitions. [2022-11-19 08:37:15,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 08:37:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 47739 states and 66110 transitions. [2022-11-19 08:37:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-19 08:37:15,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:15,351 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:15,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:37:15,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:37:15,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:15,353 INFO L85 PathProgramCache]: Analyzing trace with hash 670330298, now seen corresponding path program 1 times [2022-11-19 08:37:15,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:15,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796464431] [2022-11-19 08:37:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:15,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-19 08:37:17,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:17,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796464431] [2022-11-19 08:37:17,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796464431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:17,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:17,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:37:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608026599] [2022-11-19 08:37:17,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:17,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:37:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:37:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:17,348 INFO L87 Difference]: Start difference. First operand 47739 states and 66110 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 08:37:19,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:26,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:26,103 INFO L93 Difference]: Finished difference Result 47739 states and 66110 transitions. [2022-11-19 08:37:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:37:26,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 194 [2022-11-19 08:37:26,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:26,454 INFO L225 Difference]: With dead ends: 47739 [2022-11-19 08:37:26,454 INFO L226 Difference]: Without dead ends: 47284 [2022-11-19 08:37:26,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:37:26,477 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 1504 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:26,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 3934 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-19 08:37:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47284 states. [2022-11-19 08:37:29,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47284 to 47284. [2022-11-19 08:37:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47284 states, 28568 states have (on average 1.2605712685522263) internal successors, (36012), 29686 states have internal predecessors, (36012), 14036 states have call successors, (14036), 4802 states have call predecessors, (14036), 4678 states have return successors, (15224), 13382 states have call predecessors, (15224), 14036 states have call successors, (15224) [2022-11-19 08:37:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47284 states to 47284 states and 65272 transitions. [2022-11-19 08:37:29,641 INFO L78 Accepts]: Start accepts. Automaton has 47284 states and 65272 transitions. Word has length 194 [2022-11-19 08:37:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:29,641 INFO L495 AbstractCegarLoop]: Abstraction has 47284 states and 65272 transitions. [2022-11-19 08:37:29,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 08:37:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 47284 states and 65272 transitions. [2022-11-19 08:37:29,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-19 08:37:29,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:29,646 INFO L195 NwaCegarLoop]: trace histogram [16, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:29,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:37:29,647 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:37:29,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash 326484952, now seen corresponding path program 1 times [2022-11-19 08:37:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:29,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460641364] [2022-11-19 08:37:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:29,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-19 08:37:30,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:30,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460641364] [2022-11-19 08:37:30,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460641364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:37:30,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660223467] [2022-11-19 08:37:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:30,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:37:30,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:37:30,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:37:30,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29112b1-cfc5-483a-9e09-af8ae63d0b3f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:37:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:32,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 3556 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:37:32,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-11-19 08:37:33,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:37:33,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660223467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:33,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:37:33,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 08:37:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117846108] [2022-11-19 08:37:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:33,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:37:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:37:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:33,128 INFO L87 Difference]: Start difference. First operand 47284 states and 65272 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 08:37:35,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:43,297 INFO L93 Difference]: Finished difference Result 112036 states and 155100 transitions. [2022-11-19 08:37:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:37:43,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 195 [2022-11-19 08:37:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:43,641 INFO L225 Difference]: With dead ends: 112036 [2022-11-19 08:37:43,641 INFO L226 Difference]: Without dead ends: 67947 [2022-11-19 08:37:44,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:44,023 INFO L413 NwaCegarLoop]: 1834 mSDtfsCounter, 1407 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:44,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 3082 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 551 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 08:37:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67947 states.