./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-ethernet-via-via-rhine.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW --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 c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb --- 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-4e7fbc6 [2022-11-23 13:49:08,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:49:08,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:49:08,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:49:08,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:49:08,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:49:08,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:49:08,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:49:08,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:49:08,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:49:08,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:49:08,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:49:08,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:49:08,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:49:08,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:49:08,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:49:08,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:49:08,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:49:08,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:49:08,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:49:08,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:49:08,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:49:08,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:49:08,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:49:08,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:49:08,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:49:08,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:49:08,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:49:08,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:49:08,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:49:08,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:49:08,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:49:08,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:49:08,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:49:08,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:49:08,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:49:08,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:49:08,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:49:08,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:49:08,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:49:08,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:49:08,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:49:08,180 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:49:08,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:49:08,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:49:08,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:49:08,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:49:08,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:49:08,183 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:49:08,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:49:08,183 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:49:08,184 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:49:08,185 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:49:08,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:49:08,185 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:49:08,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:49:08,186 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:49:08,186 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:49:08,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:49:08,187 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:49:08,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:49:08,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:49:08,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:49:08,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:49:08,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:49:08,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:49:08,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:49:08,190 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:49:08,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:49:08,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:49:08,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:49:08,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:49:08,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:49:08,192 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:49:08,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:49:08,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:49:08,193 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:49:08,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:49:08,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:49:08,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:49:08,195 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_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb [2022-11-23 13:49:08,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:49:08,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:49:08,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:49:08,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:49:08,536 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:49:08,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-23 13:49:11,545 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:49:12,226 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:49:12,227 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-23 13:49:12,280 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/data/6527eff05/22a8167a25b74019bc5b35aefa7e319e/FLAG0f2563bca [2022-11-23 13:49:12,299 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/data/6527eff05/22a8167a25b74019bc5b35aefa7e319e [2022-11-23 13:49:12,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:49:12,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:49:12,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:49:12,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:49:12,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:49:12,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:12" (1/1) ... [2022-11-23 13:49:12,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1083676f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:12, skipping insertion in model container [2022-11-23 13:49:12,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:12" (1/1) ... [2022-11-23 13:49:12,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:49:12,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:49:15,894 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2022-11-23 13:49:15,900 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2022-11-23 13:49:15,901 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2022-11-23 13:49:15,901 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2022-11-23 13:49:15,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:49:16,012 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:49:16,463 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2022-11-23 13:49:16,464 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2022-11-23 13:49:16,465 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2022-11-23 13:49:16,465 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2022-11-23 13:49:16,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:49:16,728 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:49:16,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16 WrapperNode [2022-11-23 13:49:16,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:49:16,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:49:16,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:49:16,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:49:16,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:16,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,106 INFO L138 Inliner]: procedures = 490, calls = 2663, calls flagged for inlining = 292, calls inlined = 259, statements flattened = 5854 [2022-11-23 13:49:17,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:49:17,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:49:17,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:49:17,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:49:17,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,335 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:49:17,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:49:17,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:49:17,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:49:17,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (1/1) ... [2022-11-23 13:49:17,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:49:17,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:17,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:49:17,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1feda32-1a50-4950-9da9-149df3984f84/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:49:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 13:49:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 13:49:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 13:49:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 13:49:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-23 13:49:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-23 13:49:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 13:49:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 13:49:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 13:49:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 13:49:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 13:49:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 13:49:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2022-11-23 13:49:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2022-11-23 13:49:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 13:49:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 13:49:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 13:49:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 13:49:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 13:49:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 13:49:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 13:49:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 13:49:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-23 13:49:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-23 13:49:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2022-11-23 13:49:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2022-11-23 13:49:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-23 13:49:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-23 13:49:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 13:49:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 13:49:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2022-11-23 13:49:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2022-11-23 13:49:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 13:49:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 13:49:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 13:49:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 13:49:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 13:49:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 13:49:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-23 13:49:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-23 13:49:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 13:49:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 13:49:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 13:49:17,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 13:49:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 13:49:17,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 13:49:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 13:49:17,476 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 13:49:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:49:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 13:49:17,476 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 13:49:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2022-11-23 13:49:17,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2022-11-23 13:49:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 13:49:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 13:49:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 13:49:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 13:49:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-23 13:49:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-23 13:49:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2022-11-23 13:49:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2022-11-23 13:49:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 13:49:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 13:49:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:49:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 13:49:17,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 13:49:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2022-11-23 13:49:17,478 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2022-11-23 13:49:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:49:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 13:49:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 13:49:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 13:49:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 13:49:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 13:49:17,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 13:49:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2022-11-23 13:49:17,481 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2022-11-23 13:49:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-23 13:49:17,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-23 13:49:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 13:49:17,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 13:49:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 13:49:17,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 13:49:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2022-11-23 13:49:17,481 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2022-11-23 13:49:17,482 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2022-11-23 13:49:17,482 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2022-11-23 13:49:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:49:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 13:49:17,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 13:49:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 13:49:17,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 13:49:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 13:49:17,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 13:49:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-23 13:49:17,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-23 13:49:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:49:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-23 13:49:17,484 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-23 13:49:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 13:49:17,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 13:49:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 13:49:17,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 13:49:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:49:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 13:49:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-23 13:49:17,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-23 13:49:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:49:17,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:49:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-23 13:49:17,491 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-23 13:49:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2022-11-23 13:49:17,492 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2022-11-23 13:49:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:49:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:49:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2022-11-23 13:49:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2022-11-23 13:49:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-23 13:49:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-23 13:49:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 13:49:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 13:49:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-23 13:49:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-23 13:49:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 13:49:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 13:49:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 13:49:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 13:49:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-23 13:49:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-23 13:49:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 13:49:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 13:49:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2022-11-23 13:49:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2022-11-23 13:49:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2022-11-23 13:49:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2022-11-23 13:49:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-23 13:49:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-23 13:49:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:49:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:49:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-23 13:49:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-23 13:49:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 13:49:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 13:49:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:49:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 13:49:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 13:49:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-23 13:49:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2022-11-23 13:49:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2022-11-23 13:49:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 13:49:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 13:49:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 13:49:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 13:49:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2022-11-23 13:49:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2022-11-23 13:49:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-23 13:49:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-23 13:49:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 13:49:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 13:49:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2022-11-23 13:49:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2022-11-23 13:49:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-23 13:49:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-23 13:49:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-23 13:49:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-23 13:49:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2022-11-23 13:49:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2022-11-23 13:49:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2022-11-23 13:49:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2022-11-23 13:49:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 13:49:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 13:49:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:49:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 13:49:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 13:49:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 13:49:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 13:49:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:49:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2022-11-23 13:49:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2022-11-23 13:49:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-23 13:49:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-23 13:49:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:49:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2022-11-23 13:49:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2022-11-23 13:49:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2022-11-23 13:49:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2022-11-23 13:49:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 13:49:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 13:49:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-23 13:49:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-23 13:49:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2022-11-23 13:49:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2022-11-23 13:49:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2022-11-23 13:49:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2022-11-23 13:49:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-23 13:49:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-23 13:49:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 13:49:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 13:49:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-23 13:49:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-23 13:49:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 13:49:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 13:49:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 13:49:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 13:49:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-23 13:49:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-23 13:49:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 13:49:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 13:49:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 13:49:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 13:49:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 13:49:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 13:49:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2022-11-23 13:49:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2022-11-23 13:49:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2022-11-23 13:49:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2022-11-23 13:49:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 13:49:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 13:49:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2022-11-23 13:49:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2022-11-23 13:49:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 13:49:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 13:49:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:49:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-23 13:49:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-23 13:49:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 13:49:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 13:49:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-23 13:49:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-23 13:49:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 13:49:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 13:49:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_task_lock_of_rhine_private [2022-11-23 13:49:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_task_lock_of_rhine_private [2022-11-23 13:49:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2022-11-23 13:49:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2022-11-23 13:49:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2022-11-23 13:49:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2022-11-23 13:49:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2022-11-23 13:49:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2022-11-23 13:49:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2022-11-23 13:49:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2022-11-23 13:49:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-23 13:49:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-23 13:49:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 13:49:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 13:49:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 13:49:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 13:49:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 13:49:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 13:49:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2022-11-23 13:49:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2022-11-23 13:49:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2022-11-23 13:49:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2022-11-23 13:49:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 13:49:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 13:49:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-23 13:49:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-23 13:49:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:49:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2022-11-23 13:49:17,571 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2022-11-23 13:49:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2022-11-23 13:49:17,571 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2022-11-23 13:49:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 13:49:17,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 13:49:18,480 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:49:18,484 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:49:18,766 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 13:59:11,130 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 13:59:11,250 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:59:17,649 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:59:17,649 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 13:59:17,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:17 BoogieIcfgContainer [2022-11-23 13:59:17,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:59:17,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:59:17,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:59:17,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:59:17,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:49:12" (1/3) ... [2022-11-23 13:59:17,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc61fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:17, skipping insertion in model container [2022-11-23 13:59:17,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:16" (2/3) ... [2022-11-23 13:59:17,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc61fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:17, skipping insertion in model container [2022-11-23 13:59:17,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:17" (3/3) ... [2022-11-23 13:59:17,668 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-23 13:59:17,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:59:17,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 13:59:17,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:59:17,818 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;@40e1a713, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:59:17,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 13:59:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 1653 states, 946 states have (on average 1.3128964059196617) internal successors, (1242), 995 states have internal predecessors, (1242), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) [2022-11-23 13:59:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-23 13:59:17,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:17,856 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2022-11-23 13:59:17,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 13:59:17,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1788844933, now seen corresponding path program 1 times [2022-11-23 13:59:17,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:17,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791812204] [2022-11-23 13:59:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-11-23 13:59:20,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:20,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791812204] [2022-11-23 13:59:20,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791812204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:20,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:59:20,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:59:20,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360919709] [2022-11-23 13:59:20,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:20,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:59:20,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:59:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:59:20,913 INFO L87 Difference]: Start difference. First operand has 1653 states, 946 states have (on average 1.3128964059196617) internal successors, (1242), 995 states have internal predecessors, (1242), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 13:59:23,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:27,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:28,539 INFO L93 Difference]: Finished difference Result 4816 states and 7130 transitions. [2022-11-23 13:59:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:59:28,545 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 164 [2022-11-23 13:59:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:28,589 INFO L225 Difference]: With dead ends: 4816 [2022-11-23 13:59:28,589 INFO L226 Difference]: Without dead ends: 3179 [2022-11-23 13:59:28,603 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 [2022-11-23 13:59:28,607 INFO L413 NwaCegarLoop]: 2571 mSDtfsCounter, 2269 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 4568 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:59:28,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 4568 Invalid, 724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 714 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 13:59:28,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-11-23 13:59:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3175. [2022-11-23 13:59:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 1826 states have (on average 1.3061336254107339) internal successors, (2385), 1921 states have internal predecessors, (2385), 1104 states have call successors, (1104), 243 states have call predecessors, (1104), 242 states have return successors, (1100), 1074 states have call predecessors, (1100), 1100 states have call successors, (1100) [2022-11-23 13:59:28,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4589 transitions. [2022-11-23 13:59:28,941 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4589 transitions. Word has length 164 [2022-11-23 13:59:28,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:28,944 INFO L495 AbstractCegarLoop]: Abstraction has 3175 states and 4589 transitions. [2022-11-23 13:59:28,944 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 13:59:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4589 transitions. [2022-11-23 13:59:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-23 13:59:28,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:28,957 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:59:28,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:59:28,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 13:59:28,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:28,959 INFO L85 PathProgramCache]: Analyzing trace with hash 490349135, now seen corresponding path program 1 times [2022-11-23 13:59:28,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:28,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088340410] [2022-11-23 13:59:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:28,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-23 13:59:31,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:31,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088340410] [2022-11-23 13:59:31,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088340410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:31,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:59:31,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:59:31,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065702089] [2022-11-23 13:59:31,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:31,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:59:31,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:31,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:59:31,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:59:31,434 INFO L87 Difference]: Start difference. First operand 3175 states and 4589 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:59:33,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:39,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:39,873 INFO L93 Difference]: Finished difference Result 9107 states and 13133 transitions. [2022-11-23 13:59:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:59:39,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 165 [2022-11-23 13:59:39,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:39,914 INFO L225 Difference]: With dead ends: 9107 [2022-11-23 13:59:39,914 INFO L226 Difference]: Without dead ends: 5961 [2022-11-23 13:59:39,930 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 [2022-11-23 13:59:39,931 INFO L413 NwaCegarLoop]: 2636 mSDtfsCounter, 2001 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 4594 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:59:39,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2001 Valid, 4594 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 793 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-23 13:59:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2022-11-23 13:59:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5940. [2022-11-23 13:59:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 3403 states have (on average 1.2918013517484572) internal successors, (4396), 3577 states have internal predecessors, (4396), 2059 states have call successors, (2059), 476 states have call predecessors, (2059), 475 states have return successors, (2055), 2004 states have call predecessors, (2055), 2055 states have call successors, (2055) [2022-11-23 13:59:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 8510 transitions. [2022-11-23 13:59:40,278 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 8510 transitions. Word has length 165 [2022-11-23 13:59:40,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:40,280 INFO L495 AbstractCegarLoop]: Abstraction has 5940 states and 8510 transitions. [2022-11-23 13:59:40,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 13:59:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 8510 transitions. [2022-11-23 13:59:40,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-23 13:59:40,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:40,285 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:59:40,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:59:40,285 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 13:59:40,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash 820924458, now seen corresponding path program 1 times [2022-11-23 13:59:40,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:40,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465104457] [2022-11-23 13:59:40,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-23 13:59:41,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:41,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465104457] [2022-11-23 13:59:41,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465104457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:41,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:59:41,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:59:41,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739438272] [2022-11-23 13:59:41,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:41,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:59:41,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:41,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:59:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:59:41,763 INFO L87 Difference]: Start difference. First operand 5940 states and 8510 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 13:59:43,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:50,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:50,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:50,375 INFO L93 Difference]: Finished difference Result 16690 states and 23800 transitions. [2022-11-23 13:59:50,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:59:50,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2022-11-23 13:59:50,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:50,466 INFO L225 Difference]: With dead ends: 16690 [2022-11-23 13:59:50,467 INFO L226 Difference]: Without dead ends: 10779 [2022-11-23 13:59:50,504 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 [2022-11-23 13:59:50,507 INFO L413 NwaCegarLoop]: 2482 mSDtfsCounter, 1915 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 4443 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-23 13:59:50,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 4443 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 729 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-23 13:59:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10779 states. [2022-11-23 13:59:51,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10779 to 10754. [2022-11-23 13:59:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10754 states, 6127 states have (on average 1.2808878733474784) internal successors, (7848), 6457 states have internal predecessors, (7848), 3721 states have call successors, (3721), 908 states have call predecessors, (3721), 903 states have return successors, (3719), 3604 states have call predecessors, (3719), 3717 states have call successors, (3719) [2022-11-23 13:59:51,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 15288 transitions. [2022-11-23 13:59:51,316 INFO L78 Accepts]: Start accepts. Automaton has 10754 states and 15288 transitions. Word has length 166 [2022-11-23 13:59:51,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:51,318 INFO L495 AbstractCegarLoop]: Abstraction has 10754 states and 15288 transitions. [2022-11-23 13:59:51,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 13:59:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10754 states and 15288 transitions. [2022-11-23 13:59:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-23 13:59:51,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:51,325 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:59:51,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:59:51,325 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 13:59:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash 948168321, now seen corresponding path program 1 times [2022-11-23 13:59:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:51,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748219294] [2022-11-23 13:59:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:51,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-23 13:59:52,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:52,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748219294] [2022-11-23 13:59:52,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748219294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:52,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:59:52,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:59:52,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574339854] [2022-11-23 13:59:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:59:52,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:52,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:59:52,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:59:52,986 INFO L87 Difference]: Start difference. First operand 10754 states and 15288 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 13:59:55,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:00,611 INFO L93 Difference]: Finished difference Result 22758 states and 32260 transitions. [2022-11-23 14:00:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:00:00,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 176 [2022-11-23 14:00:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:00,684 INFO L225 Difference]: With dead ends: 22758 [2022-11-23 14:00:00,684 INFO L226 Difference]: Without dead ends: 12033 [2022-11-23 14:00:00,732 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 [2022-11-23 14:00:00,733 INFO L413 NwaCegarLoop]: 2748 mSDtfsCounter, 1983 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:00,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 4722 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 833 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-23 14:00:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12033 states. [2022-11-23 14:00:01,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12033 to 12010. [2022-11-23 14:00:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12010 states, 6863 states have (on average 1.2723298848899898) internal successors, (8732), 7232 states have internal predecessors, (8732), 4086 states have call successors, (4086), 1066 states have call predecessors, (4086), 1058 states have return successors, (4084), 3938 states have call predecessors, (4084), 4082 states have call successors, (4084) [2022-11-23 14:00:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 16902 transitions. [2022-11-23 14:00:01,396 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 16902 transitions. Word has length 176 [2022-11-23 14:00:01,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:01,397 INFO L495 AbstractCegarLoop]: Abstraction has 12010 states and 16902 transitions. [2022-11-23 14:00:01,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 14:00:01,397 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 16902 transitions. [2022-11-23 14:00:01,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-23 14:00:01,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:01,402 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:01,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:00:01,402 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:00:01,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:01,403 INFO L85 PathProgramCache]: Analyzing trace with hash -574879773, now seen corresponding path program 1 times [2022-11-23 14:00:01,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:01,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048505733] [2022-11-23 14:00:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-23 14:00:03,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:00:03,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048505733] [2022-11-23 14:00:03,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048505733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:00:03,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:00:03,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:00:03,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778546227] [2022-11-23 14:00:03,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:00:03,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:00:03,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:00:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:00:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:00:03,043 INFO L87 Difference]: Start difference. First operand 12010 states and 16902 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 14:00:05,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:10,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:10,673 INFO L93 Difference]: Finished difference Result 33961 states and 47841 transitions. [2022-11-23 14:00:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:00:10,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 177 [2022-11-23 14:00:10,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:10,789 INFO L225 Difference]: With dead ends: 33961 [2022-11-23 14:00:10,789 INFO L226 Difference]: Without dead ends: 21980 [2022-11-23 14:00:10,839 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 [2022-11-23 14:00:10,840 INFO L413 NwaCegarLoop]: 2571 mSDtfsCounter, 2285 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2285 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:10,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2285 Valid, 4574 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 702 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-23 14:00:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2022-11-23 14:00:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 21947. [2022-11-23 14:00:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21947 states, 12530 states have (on average 1.2725458898643256) internal successors, (15945), 13225 states have internal predecessors, (15945), 7482 states have call successors, (7482), 1947 states have call predecessors, (7482), 1932 states have return successors, (7482), 7191 states have call predecessors, (7482), 7478 states have call successors, (7482) [2022-11-23 14:00:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21947 states to 21947 states and 30909 transitions. [2022-11-23 14:00:12,260 INFO L78 Accepts]: Start accepts. Automaton has 21947 states and 30909 transitions. Word has length 177 [2022-11-23 14:00:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:12,261 INFO L495 AbstractCegarLoop]: Abstraction has 21947 states and 30909 transitions. [2022-11-23 14:00:12,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 14:00:12,261 INFO L276 IsEmpty]: Start isEmpty. Operand 21947 states and 30909 transitions. [2022-11-23 14:00:12,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-23 14:00:12,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:12,265 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 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] [2022-11-23 14:00:12,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:00:12,265 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:00:12,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:12,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1308652265, now seen corresponding path program 1 times [2022-11-23 14:00:12,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:12,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916700178] [2022-11-23 14:00:12,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:12,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2022-11-23 14:00:13,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:00:13,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916700178] [2022-11-23 14:00:13,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916700178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:00:13,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:00:13,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:00:13,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999153581] [2022-11-23 14:00:13,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:00:13,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:00:13,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:00:13,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:00:13,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:00:13,775 INFO L87 Difference]: Start difference. First operand 21947 states and 30909 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:00:15,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:20,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:22,661 INFO L93 Difference]: Finished difference Result 60183 states and 84840 transitions. [2022-11-23 14:00:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:00:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 185 [2022-11-23 14:00:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:22,852 INFO L225 Difference]: With dead ends: 60183 [2022-11-23 14:00:22,852 INFO L226 Difference]: Without dead ends: 38265 [2022-11-23 14:00:23,098 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 [2022-11-23 14:00:23,100 INFO L413 NwaCegarLoop]: 3013 mSDtfsCounter, 2222 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 4999 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:23,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2222 Valid, 4999 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 833 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 14:00:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38265 states. [2022-11-23 14:00:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38265 to 38216. [2022-11-23 14:00:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38216 states, 21918 states have (on average 1.271055753262159) internal successors, (27859), 23171 states have internal predecessors, (27859), 12946 states have call successors, (12946), 3378 states have call predecessors, (12946), 3349 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2022-11-23 14:00:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38216 states to 38216 states and 53755 transitions. [2022-11-23 14:00:25,717 INFO L78 Accepts]: Start accepts. Automaton has 38216 states and 53755 transitions. Word has length 185 [2022-11-23 14:00:25,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:25,718 INFO L495 AbstractCegarLoop]: Abstraction has 38216 states and 53755 transitions. [2022-11-23 14:00:25,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:00:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 38216 states and 53755 transitions. [2022-11-23 14:00:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-23 14:00:25,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:25,723 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:25,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:00:25,724 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:00:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash -740609454, now seen corresponding path program 1 times [2022-11-23 14:00:25,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:25,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314854595] [2022-11-23 14:00:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:25,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2022-11-23 14:00:30,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:00:30,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314854595] [2022-11-23 14:00:30,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314854595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:00:30,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:00:30,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:00:30,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042961898] [2022-11-23 14:00:30,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:00:30,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:00:30,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:00:30,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:00:30,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:00:30,391 INFO L87 Difference]: Start difference. First operand 38216 states and 53755 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) [2022-11-23 14:00:32,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:39,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:39,848 INFO L93 Difference]: Finished difference Result 38222 states and 53760 transitions. [2022-11-23 14:00:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:00:39,849 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 209 [2022-11-23 14:00:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:40,015 INFO L225 Difference]: With dead ends: 38222 [2022-11-23 14:00:40,016 INFO L226 Difference]: Without dead ends: 38220 [2022-11-23 14:00:40,032 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 [2022-11-23 14:00:40,033 INFO L413 NwaCegarLoop]: 2008 mSDtfsCounter, 2305 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 6019 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:40,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 6019 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-23 14:00:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38220 states. [2022-11-23 14:00:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38220 to 38220. [2022-11-23 14:00:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38220 states, 21921 states have (on average 1.271018657907942) internal successors, (27862), 23174 states have internal predecessors, (27862), 12946 states have call successors, (12946), 3379 states have call predecessors, (12946), 3350 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2022-11-23 14:00:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38220 states to 38220 states and 53758 transitions. [2022-11-23 14:00:42,331 INFO L78 Accepts]: Start accepts. Automaton has 38220 states and 53758 transitions. Word has length 209 [2022-11-23 14:00:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:42,332 INFO L495 AbstractCegarLoop]: Abstraction has 38220 states and 53758 transitions. [2022-11-23 14:00:42,332 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) [2022-11-23 14:00:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 38220 states and 53758 transitions. [2022-11-23 14:00:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-23 14:00:42,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:42,337 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:42,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:00:42,338 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:00:42,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash 885594439, now seen corresponding path program 1 times [2022-11-23 14:00:42,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:42,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770617502] [2022-11-23 14:00:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:42,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2022-11-23 14:00:46,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:00:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770617502] [2022-11-23 14:00:46,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770617502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:00:46,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:00:46,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:00:46,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058680694] [2022-11-23 14:00:46,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:00:46,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:00:46,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:00:46,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:00:46,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:00:46,582 INFO L87 Difference]: Start difference. First operand 38220 states and 53758 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 14:00:48,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:54,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:56,187 INFO L93 Difference]: Finished difference Result 38226 states and 53763 transitions. [2022-11-23 14:00:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:00:56,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 214 [2022-11-23 14:00:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:56,334 INFO L225 Difference]: With dead ends: 38226 [2022-11-23 14:00:56,335 INFO L226 Difference]: Without dead ends: 38224 [2022-11-23 14:00:56,349 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 [2022-11-23 14:00:56,351 INFO L413 NwaCegarLoop]: 2011 mSDtfsCounter, 2300 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 6022 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:56,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 6022 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-23 14:00:56,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38224 states. [2022-11-23 14:00:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38224 to 38224. [2022-11-23 14:00:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38224 states, 21924 states have (on average 1.2709815727057105) internal successors, (27865), 23177 states have internal predecessors, (27865), 12946 states have call successors, (12946), 3380 states have call predecessors, (12946), 3351 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2022-11-23 14:00:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38224 states to 38224 states and 53761 transitions. [2022-11-23 14:00:58,477 INFO L78 Accepts]: Start accepts. Automaton has 38224 states and 53761 transitions. Word has length 214 [2022-11-23 14:00:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:58,478 INFO L495 AbstractCegarLoop]: Abstraction has 38224 states and 53761 transitions. [2022-11-23 14:00:58,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 14:00:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 38224 states and 53761 transitions. [2022-11-23 14:00:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-23 14:00:58,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:58,484 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:58,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:00:58,485 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:00:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -784559515, now seen corresponding path program 1 times [2022-11-23 14:00:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:58,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674599565] [2022-11-23 14:00:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:01:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2022-11-23 14:01:02,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:01:02,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674599565] [2022-11-23 14:01:02,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674599565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:01:02,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:01:02,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:01:02,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654664091] [2022-11-23 14:01:02,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:01:02,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:01:02,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:01:02,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:01:02,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:01:02,501 INFO L87 Difference]: Start difference. First operand 38224 states and 53761 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 14:01:04,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:11,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:01:11,223 INFO L93 Difference]: Finished difference Result 38230 states and 53766 transitions. [2022-11-23 14:01:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:01:11,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 217 [2022-11-23 14:01:11,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:01:11,383 INFO L225 Difference]: With dead ends: 38230 [2022-11-23 14:01:11,383 INFO L226 Difference]: Without dead ends: 38226 [2022-11-23 14:01:11,401 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 [2022-11-23 14:01:11,402 INFO L413 NwaCegarLoop]: 2011 mSDtfsCounter, 2301 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 6022 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:01:11,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 6022 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-23 14:01:11,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38226 states. [2022-11-23 14:01:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38226 to 38226. [2022-11-23 14:01:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38226 states, 21926 states have (on average 1.2709112469214632) internal successors, (27866), 23178 states have internal predecessors, (27866), 12946 states have call successors, (12946), 3381 states have call predecessors, (12946), 3351 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2022-11-23 14:01:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38226 states to 38226 states and 53762 transitions. [2022-11-23 14:01:13,712 INFO L78 Accepts]: Start accepts. Automaton has 38226 states and 53762 transitions. Word has length 217 [2022-11-23 14:01:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:01:13,713 INFO L495 AbstractCegarLoop]: Abstraction has 38226 states and 53762 transitions. [2022-11-23 14:01:13,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 14:01:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 38226 states and 53762 transitions. [2022-11-23 14:01:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-23 14:01:13,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:01:13,719 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:01:13,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:01:13,720 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:01:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:01:13,720 INFO L85 PathProgramCache]: Analyzing trace with hash -25323009, now seen corresponding path program 1 times [2022-11-23 14:01:13,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:01:13,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320455251] [2022-11-23 14:01:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:01:13,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:01:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:01:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2022-11-23 14:01:17,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:01:17,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320455251] [2022-11-23 14:01:17,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320455251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:01:17,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:01:17,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:01:17,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828274560] [2022-11-23 14:01:17,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:01:17,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:01:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:01:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:01:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:01:17,411 INFO L87 Difference]: Start difference. First operand 38226 states and 53762 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:01:19,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:27,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:29,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:01:29,726 INFO L93 Difference]: Finished difference Result 43742 states and 60759 transitions. [2022-11-23 14:01:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:01:29,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 223 [2022-11-23 14:01:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:01:29,901 INFO L225 Difference]: With dead ends: 43742 [2022-11-23 14:01:29,901 INFO L226 Difference]: Without dead ends: 43463 [2022-11-23 14:01:29,923 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 [2022-11-23 14:01:29,924 INFO L413 NwaCegarLoop]: 2271 mSDtfsCounter, 2161 mSDsluCounter, 5020 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 7291 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:01:29,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 7291 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1203 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-23 14:01:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43463 states. [2022-11-23 14:01:32,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43463 to 43463. [2022-11-23 14:01:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43463 states, 24783 states have (on average 1.259613444699996) internal successors, (31217), 26138 states have internal predecessors, (31217), 14492 states have call successors, (14492), 4198 states have call predecessors, (14492), 4186 states have return successors, (14500), 13970 states have call predecessors, (14500), 14492 states have call successors, (14500) [2022-11-23 14:01:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43463 states to 43463 states and 60209 transitions. [2022-11-23 14:01:32,829 INFO L78 Accepts]: Start accepts. Automaton has 43463 states and 60209 transitions. Word has length 223 [2022-11-23 14:01:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:01:32,830 INFO L495 AbstractCegarLoop]: Abstraction has 43463 states and 60209 transitions. [2022-11-23 14:01:32,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:01:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 43463 states and 60209 transitions. [2022-11-23 14:01:32,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-23 14:01:32,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:01:32,837 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:01:32,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:01:32,837 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:01:32,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:01:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash -822028858, now seen corresponding path program 1 times [2022-11-23 14:01:32,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:01:32,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336231537] [2022-11-23 14:01:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:01:32,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:01:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:01:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2022-11-23 14:01:34,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:01:34,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336231537] [2022-11-23 14:01:34,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336231537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:01:34,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:01:34,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:01:34,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796449853] [2022-11-23 14:01:34,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:01:34,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:01:34,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:01:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:01:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:01:34,544 INFO L87 Difference]: Start difference. First operand 43463 states and 60209 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 14:01:36,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:01:45,288 INFO L93 Difference]: Finished difference Result 106067 states and 146989 transitions. [2022-11-23 14:01:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:01:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 225 [2022-11-23 14:01:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:01:45,535 INFO L225 Difference]: With dead ends: 106067 [2022-11-23 14:01:45,536 INFO L226 Difference]: Without dead ends: 62775 [2022-11-23 14:01:45,669 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 [2022-11-23 14:01:45,670 INFO L413 NwaCegarLoop]: 2795 mSDtfsCounter, 1951 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:01:45,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 4735 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 854 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-23 14:01:45,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62775 states. [2022-11-23 14:01:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62775 to 62755. [2022-11-23 14:01:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62755 states, 35841 states have (on average 1.25822382187997) internal successors, (45096), 37794 states have internal predecessors, (45096), 20808 states have call successors, (20808), 6120 states have call predecessors, (20808), 6104 states have return successors, (20820), 20040 states have call predecessors, (20820), 20808 states have call successors, (20820) [2022-11-23 14:01:49,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62755 states to 62755 states and 86724 transitions. [2022-11-23 14:01:49,557 INFO L78 Accepts]: Start accepts. Automaton has 62755 states and 86724 transitions. Word has length 225 [2022-11-23 14:01:49,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:01:49,557 INFO L495 AbstractCegarLoop]: Abstraction has 62755 states and 86724 transitions. [2022-11-23 14:01:49,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 14:01:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 62755 states and 86724 transitions. [2022-11-23 14:01:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-23 14:01:49,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:01:49,565 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 14, 14, 14, 14, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:01:49,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:01:49,565 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:01:49,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:01:49,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1849231552, now seen corresponding path program 1 times [2022-11-23 14:01:49,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:01:49,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123144278] [2022-11-23 14:01:49,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:01:49,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:01:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:01:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-11-23 14:01:51,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:01:51,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123144278] [2022-11-23 14:01:51,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123144278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:01:51,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:01:51,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:01:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928703017] [2022-11-23 14:01:51,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:01:51,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:01:51,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:01:51,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:01:51,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:01:51,244 INFO L87 Difference]: Start difference. First operand 62755 states and 86724 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 14:01:53,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:01,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:05,094 INFO L93 Difference]: Finished difference Result 155023 states and 214240 transitions. [2022-11-23 14:02:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:02:05,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 237 [2022-11-23 14:02:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:05,634 INFO L225 Difference]: With dead ends: 155023 [2022-11-23 14:02:05,635 INFO L226 Difference]: Without dead ends: 92439 [2022-11-23 14:02:05,815 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 [2022-11-23 14:02:05,816 INFO L413 NwaCegarLoop]: 3828 mSDtfsCounter, 2169 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 5799 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:05,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2169 Valid, 5799 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1024 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2022-11-23 14:02:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92439 states.