./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/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 a3d1583250bab7d5c6e3cae163663e7ac3704cf0fb6c32d7f6b8a0a0c30f1a49 --- 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 14:48:05,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:48:05,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:48:05,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:48:05,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:48:05,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:48:05,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:48:06,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:48:06,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:48:06,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:48:06,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:48:06,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:48:06,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:48:06,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:48:06,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:48:06,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:48:06,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:48:06,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:48:06,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:48:06,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:48:06,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:48:06,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:48:06,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:48:06,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:48:06,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:48:06,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:48:06,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:48:06,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:48:06,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:48:06,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:48:06,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:48:06,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:48:06,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:48:06,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:48:06,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:48:06,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:48:06,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:48:06,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:48:06,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:48:06,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:48:06,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:48:06,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:48:06,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:48:06,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:48:06,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:48:06,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:48:06,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:48:06,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:48:06,108 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:48:06,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:48:06,108 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:48:06,108 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:48:06,110 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:48:06,110 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:48:06,110 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:48:06,110 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:48:06,111 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:48:06,111 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:48:06,111 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:48:06,111 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:48:06,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:48:06,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:48:06,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:48:06,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:48:06,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:48:06,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:48:06,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:48:06,114 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:48:06,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:48:06,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:48:06,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:48:06,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:48:06,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:48:06,115 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:48:06,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:48:06,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:48:06,116 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:48:06,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:48:06,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:48:06,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:48:06,117 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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3d1583250bab7d5c6e3cae163663e7ac3704cf0fb6c32d7f6b8a0a0c30f1a49 [2022-11-23 14:48:06,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:48:06,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:48:06,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:48:06,421 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:48:06,421 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:48:06,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2022-11-23 14:48:09,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:48:10,280 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:48:10,280 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2022-11-23 14:48:10,360 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/data/2e8b99d73/362c14a089154aa4899f72dac5710000/FLAG488508b4f [2022-11-23 14:48:10,381 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/data/2e8b99d73/362c14a089154aa4899f72dac5710000 [2022-11-23 14:48:10,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:48:10,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:48:10,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:48:10,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:48:10,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:48:10,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:48:10" (1/1) ... [2022-11-23 14:48:10,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2ac35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:10, skipping insertion in model container [2022-11-23 14:48:10,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:48:10" (1/1) ... [2022-11-23 14:48:10,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:48:10,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:48:17,079 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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752340,752353] [2022-11-23 14:48:17,087 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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752506,752519] [2022-11-23 14:48:17,087 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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752670,752683] [2022-11-23 14:48:17,088 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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752835,752848] [2022-11-23 14:48:17,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:48:17,193 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:48:18,052 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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752340,752353] [2022-11-23 14:48:18,053 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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752506,752519] [2022-11-23 14:48:18,054 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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752670,752683] [2022-11-23 14:48:18,054 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_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752835,752848] [2022-11-23 14:48:18,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:48:18,471 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:48:18,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18 WrapperNode [2022-11-23 14:48:18,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:48:18,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:48:18,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:48:18,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:48:18,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:18,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:19,072 INFO L138 Inliner]: procedures = 660, calls = 11669, calls flagged for inlining = 344, calls inlined = 236, statements flattened = 12513 [2022-11-23 14:48:19,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:48:19,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:48:19,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:48:19,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:48:19,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:19,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:19,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:19,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:19,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:19,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:19,828 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:19,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:20,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:48:20,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:48:20,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:48:20,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:48:20,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (1/1) ... [2022-11-23 14:48:20,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:48:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:48:20,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:48:20,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:48:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 14:48:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 14:48:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:48:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:48:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2022-11-23 14:48:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2022-11-23 14:48:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2022-11-23 14:48:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2022-11-23 14:48:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2022-11-23 14:48:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2022-11-23 14:48:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:48:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:48:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 14:48:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 14:48:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-23 14:48:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-23 14:48:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2022-11-23 14:48:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2022-11-23 14:48:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2022-11-23 14:48:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2022-11-23 14:48:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 14:48:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 14:48:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 14:48:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 14:48:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2022-11-23 14:48:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2022-11-23 14:48:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2022-11-23 14:48:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2022-11-23 14:48:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 14:48:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 14:48:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:48:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:48:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 14:48:20,208 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 14:48:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:48:20,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:48:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 14:48:20,209 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 14:48:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 14:48:20,209 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 14:48:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2022-11-23 14:48:20,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2022-11-23 14:48:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:48:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:48:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 14:48:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 14:48:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:48:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:48:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2022-11-23 14:48:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2022-11-23 14:48:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2022-11-23 14:48:20,227 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2022-11-23 14:48:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2022-11-23 14:48:20,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2022-11-23 14:48:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 14:48:20,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 14:48:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:48:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2022-11-23 14:48:20,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2022-11-23 14:48:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 14:48:20,228 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 14:48:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2022-11-23 14:48:20,229 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2022-11-23 14:48:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:48:20,229 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:48:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2022-11-23 14:48:20,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2022-11-23 14:48:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2022-11-23 14:48:20,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2022-11-23 14:48:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 14:48:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 14:48:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2022-11-23 14:48:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2022-11-23 14:48:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:48:20,232 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:48:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-23 14:48:20,232 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-23 14:48:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:48:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 14:48:20,233 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 14:48:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-23 14:48:20,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-23 14:48:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:48:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2022-11-23 14:48:20,234 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2022-11-23 14:48:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:48:20,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:48:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2022-11-23 14:48:20,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2022-11-23 14:48:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:48:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 14:48:20,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 14:48:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2022-11-23 14:48:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2022-11-23 14:48:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2022-11-23 14:48:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2022-11-23 14:48:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:48:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:48:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 14:48:20,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 14:48:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 14:48:20,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 14:48:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 14:48:20,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 14:48:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 14:48:20,242 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 14:48:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 14:48:20,243 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 14:48:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2022-11-23 14:48:20,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2022-11-23 14:48:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 14:48:20,244 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 14:48:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2022-11-23 14:48:20,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2022-11-23 14:48:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2022-11-23 14:48:20,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2022-11-23 14:48:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2022-11-23 14:48:20,250 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2022-11-23 14:48:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2022-11-23 14:48:20,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2022-11-23 14:48:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:48:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:48:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2022-11-23 14:48:20,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2022-11-23 14:48:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:48:20,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:48:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2022-11-23 14:48:20,252 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2022-11-23 14:48:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 14:48:20,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 14:48:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:48:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-23 14:48:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-23 14:48:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:48:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2022-11-23 14:48:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2022-11-23 14:48:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:48:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:48:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2022-11-23 14:48:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2022-11-23 14:48:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 14:48:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 14:48:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2022-11-23 14:48:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2022-11-23 14:48:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 14:48:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 14:48:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:48:20,275 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:48:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2022-11-23 14:48:20,275 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2022-11-23 14:48:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2022-11-23 14:48:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2022-11-23 14:48:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-23 14:48:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-23 14:48:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2022-11-23 14:48:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2022-11-23 14:48:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-23 14:48:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-23 14:48:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:48:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:48:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2022-11-23 14:48:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2022-11-23 14:48:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2022-11-23 14:48:20,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2022-11-23 14:48:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2022-11-23 14:48:20,278 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2022-11-23 14:48:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-23 14:48:20,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-23 14:48:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:48:20,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:48:20,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:48:20,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:48:20,279 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2022-11-23 14:48:20,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2022-11-23 14:48:20,279 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-23 14:48:20,280 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-23 14:48:20,280 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2022-11-23 14:48:20,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2022-11-23 14:48:20,280 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2022-11-23 14:48:20,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2022-11-23 14:48:20,280 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2022-11-23 14:48:20,281 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2022-11-23 14:48:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2022-11-23 14:48:20,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2022-11-23 14:48:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 14:48:20,281 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 14:48:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2022-11-23 14:48:20,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2022-11-23 14:48:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2022-11-23 14:48:20,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2022-11-23 14:48:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2022-11-23 14:48:20,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2022-11-23 14:48:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2022-11-23 14:48:20,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2022-11-23 14:48:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2022-11-23 14:48:20,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2022-11-23 14:48:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 14:48:20,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 14:48:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2022-11-23 14:48:20,283 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2022-11-23 14:48:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2022-11-23 14:48:20,284 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2022-11-23 14:48:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 14:48:20,284 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 14:48:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:48:20,284 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:48:20,285 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 14:48:20,285 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 14:48:20,285 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2022-11-23 14:48:20,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2022-11-23 14:48:20,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-23 14:48:20,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-23 14:48:20,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-23 14:48:20,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-23 14:48:20,286 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 14:48:20,286 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 14:48:20,286 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-23 14:48:20,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-23 14:48:20,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:48:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2022-11-23 14:48:20,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2022-11-23 14:48:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:48:20,287 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:48:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2022-11-23 14:48:20,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2022-11-23 14:48:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:48:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2022-11-23 14:48:20,288 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2022-11-23 14:48:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2022-11-23 14:48:20,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2022-11-23 14:48:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2022-11-23 14:48:20,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2022-11-23 14:48:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2022-11-23 14:48:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2022-11-23 14:48:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2022-11-23 14:48:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2022-11-23 14:48:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-23 14:48:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-23 14:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2022-11-23 14:48:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2022-11-23 14:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 14:48:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 14:48:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:48:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2022-11-23 14:48:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2022-11-23 14:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2022-11-23 14:48:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2022-11-23 14:48:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 14:48:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 14:48:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2022-11-23 14:48:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2022-11-23 14:48:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:48:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:48:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 14:48:20,303 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 14:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-23 14:48:20,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-23 14:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2022-11-23 14:48:20,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2022-11-23 14:48:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2022-11-23 14:48:20,304 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2022-11-23 14:48:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2022-11-23 14:48:20,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2022-11-23 14:48:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-23 14:48:20,304 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-23 14:48:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2022-11-23 14:48:20,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2022-11-23 14:48:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 14:48:20,305 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 14:48:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-23 14:48:20,305 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-23 14:48:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 14:48:20,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 14:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 14:48:20,306 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 14:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-23 14:48:20,306 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-23 14:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2022-11-23 14:48:20,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2022-11-23 14:48:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2022-11-23 14:48:20,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2022-11-23 14:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-23 14:48:20,307 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-23 14:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:48:20,307 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:48:20,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 14:48:20,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 14:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2022-11-23 14:48:20,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2022-11-23 14:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:48:20,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:48:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2022-11-23 14:48:20,309 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2022-11-23 14:48:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2022-11-23 14:48:20,309 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2022-11-23 14:48:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-23 14:48:20,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-23 14:48:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2022-11-23 14:48:20,309 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2022-11-23 14:48:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:48:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:48:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2022-11-23 14:48:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2022-11-23 14:48:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-23 14:48:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-23 14:48:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 14:48:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 14:48:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2022-11-23 14:48:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2022-11-23 14:48:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2022-11-23 14:48:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2022-11-23 14:48:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2022-11-23 14:48:20,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2022-11-23 14:48:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:48:20,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:48:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-23 14:48:20,312 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-23 14:48:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 14:48:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 14:48:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 14:48:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 14:48:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 14:48:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 14:48:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2022-11-23 14:48:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2022-11-23 14:48:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 14:48:20,314 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 14:48:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2022-11-23 14:48:20,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2022-11-23 14:48:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-23 14:48:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2022-11-23 14:48:20,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2022-11-23 14:48:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2022-11-23 14:48:20,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2022-11-23 14:48:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:48:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2022-11-23 14:48:20,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2022-11-23 14:48:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2022-11-23 14:48:20,315 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2022-11-23 14:48:20,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:48:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:48:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 14:48:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 14:48:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2022-11-23 14:48:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2022-11-23 14:48:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2022-11-23 14:48:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2022-11-23 14:48:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-23 14:48:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-23 14:48:21,724 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:48:21,729 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:48:34,915 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:50:41,611 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:50:44,990 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:50:44,990 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 14:50:44,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:50:44 BoogieIcfgContainer [2022-11-23 14:50:44,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:50:44,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:50:44,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:50:45,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:50:45,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:48:10" (1/3) ... [2022-11-23 14:50:45,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3817d686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:50:45, skipping insertion in model container [2022-11-23 14:50:45,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:18" (2/3) ... [2022-11-23 14:50:45,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3817d686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:50:45, skipping insertion in model container [2022-11-23 14:50:45,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:50:44" (3/3) ... [2022-11-23 14:50:45,004 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2022-11-23 14:50:45,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:50:45,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 14:50:45,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:50:45,142 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;@24a77e19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:50:45,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 14:50:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 2677 states, 1666 states have (on average 1.3205282112845138) internal successors, (2200), 1692 states have internal predecessors, (2200), 841 states have call successors, (841), 167 states have call predecessors, (841), 166 states have return successors, (837), 836 states have call predecessors, (837), 837 states have call successors, (837) [2022-11-23 14:50:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 14:50:45,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:50:45,169 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-23 14:50:45,169 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 14:50:45,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:50:45,175 INFO L85 PathProgramCache]: Analyzing trace with hash -373394728, now seen corresponding path program 1 times [2022-11-23 14:50:45,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:50:45,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880846653] [2022-11-23 14:50:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:50:45,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:50:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:50:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 14:50:49,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:50:49,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880846653] [2022-11-23 14:50:49,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880846653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:50:49,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:50:49,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:50:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411141666] [2022-11-23 14:50:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:50:49,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:50:49,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:50:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:50:49,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:50:49,149 INFO L87 Difference]: Start difference. First operand has 2677 states, 1666 states have (on average 1.3205282112845138) internal successors, (2200), 1692 states have internal predecessors, (2200), 841 states have call successors, (841), 167 states have call predecessors, (841), 166 states have return successors, (837), 836 states have call predecessors, (837), 837 states have call successors, (837) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:50:53,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:50:54,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:50:58,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:51:00,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:51:06,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:51:07,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:51:10,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:51:11,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:51:13,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:51:23,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:51:26,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:51:29,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:51:32,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:51:32,924 INFO L93 Difference]: Finished difference Result 7453 states and 10893 transitions. [2022-11-23 14:51:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:51:32,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-11-23 14:51:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:51:32,981 INFO L225 Difference]: With dead ends: 7453 [2022-11-23 14:51:32,982 INFO L226 Difference]: Without dead ends: 4779 [2022-11-23 14:51:33,004 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 14:51:33,007 INFO L413 NwaCegarLoop]: 4936 mSDtfsCounter, 3184 mSDsluCounter, 13294 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3190 SdHoareTripleChecker+Valid, 18230 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:51:33,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3190 Valid, 18230 Invalid, 1320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1310 Invalid, 6 Unknown, 0 Unchecked, 43.0s Time] [2022-11-23 14:51:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2022-11-23 14:51:33,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4771. [2022-11-23 14:51:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4771 states, 2969 states have (on average 1.3159312899966318) internal successors, (3907), 3018 states have internal predecessors, (3907), 1491 states have call successors, (1491), 312 states have call predecessors, (1491), 308 states have return successors, (1486), 1476 states have call predecessors, (1486), 1485 states have call successors, (1486) [2022-11-23 14:51:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 6884 transitions. [2022-11-23 14:51:33,415 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 6884 transitions. Word has length 35 [2022-11-23 14:51:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:51:33,418 INFO L495 AbstractCegarLoop]: Abstraction has 4771 states and 6884 transitions. [2022-11-23 14:51:33,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:51:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 6884 transitions. [2022-11-23 14:51:33,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 14:51:33,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:51:33,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-23 14:51:33,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:51:33,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:51:33,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:51:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash 12964935, now seen corresponding path program 1 times [2022-11-23 14:51:33,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:51:33,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918575965] [2022-11-23 14:51:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:51:33,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:51:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:51:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 14:51:36,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:51:36,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918575965] [2022-11-23 14:51:36,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918575965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:51:36,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:51:36,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:51:36,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73686348] [2022-11-23 14:51:36,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:51:36,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:51:36,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:51:36,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:51:36,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:51:36,413 INFO L87 Difference]: Start difference. First operand 4771 states and 6884 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 14:51:42,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:51:45,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:51:48,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:51:54,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:02,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:05,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:07,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:11,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:52:15,149 INFO L93 Difference]: Finished difference Result 9264 states and 13439 transitions. [2022-11-23 14:52:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:52:15,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2022-11-23 14:52:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:52:15,225 INFO L225 Difference]: With dead ends: 9264 [2022-11-23 14:52:15,225 INFO L226 Difference]: Without dead ends: 9262 [2022-11-23 14:52:15,234 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 14:52:15,235 INFO L413 NwaCegarLoop]: 4639 mSDtfsCounter, 3640 mSDsluCounter, 12808 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3646 SdHoareTripleChecker+Valid, 17447 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:52:15,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3646 Valid, 17447 Invalid, 1253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1243 Invalid, 7 Unknown, 0 Unchecked, 38.1s Time] [2022-11-23 14:52:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2022-11-23 14:52:15,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 9245. [2022-11-23 14:52:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9245 states, 5755 states have (on average 1.3174630755864465) internal successors, (7582), 5858 states have internal predecessors, (7582), 2885 states have call successors, (2885), 612 states have call predecessors, (2885), 602 states have return successors, (2955), 2845 states have call predecessors, (2955), 2873 states have call successors, (2955) [2022-11-23 14:52:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9245 states to 9245 states and 13422 transitions. [2022-11-23 14:52:15,795 INFO L78 Accepts]: Start accepts. Automaton has 9245 states and 13422 transitions. Word has length 40 [2022-11-23 14:52:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:52:15,796 INFO L495 AbstractCegarLoop]: Abstraction has 9245 states and 13422 transitions. [2022-11-23 14:52:15,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 14:52:15,797 INFO L276 IsEmpty]: Start isEmpty. Operand 9245 states and 13422 transitions. [2022-11-23 14:52:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 14:52:15,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:52:15,808 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:52:15,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:52:15,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 14:52:15,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:52:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2042238968, now seen corresponding path program 1 times [2022-11-23 14:52:15,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:52:15,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921606370] [2022-11-23 14:52:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:52:15,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:52:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:52:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 14:52:18,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:52:18,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921606370] [2022-11-23 14:52:18,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921606370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:52:18,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:52:18,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:52:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537783286] [2022-11-23 14:52:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:52:18,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:52:18,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:52:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:52:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:52:18,806 INFO L87 Difference]: Start difference. First operand 9245 states and 13422 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 14:52:23,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:52:24,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:52:26,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:52:30,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:31,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:35,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:37,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:41,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:45,791 WARN L539 Checker$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 14:52:49,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:52,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:52:57,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:52:57,055 INFO L93 Difference]: Finished difference Result 15938 states and 23076 transitions. [2022-11-23 14:52:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:52:57,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2022-11-23 14:52:57,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:52:57,152 INFO L225 Difference]: With dead ends: 15938 [2022-11-23 14:52:57,152 INFO L226 Difference]: Without dead ends: 15936 [2022-11-23 14:52:57,166 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 14:52:57,167 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 3296 mSDsluCounter, 12089 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3302 SdHoareTripleChecker+Valid, 16371 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:52:57,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3302 Valid, 16371 Invalid, 1187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1179 Invalid, 6 Unknown, 0 Unchecked, 37.7s Time] [2022-11-23 14:52:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15936 states. [2022-11-23 14:52:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15936 to 15911. [2022-11-23 14:52:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15911 states, 9901 states have (on average 1.3156246843753157) internal successors, (13026), 10065 states have internal predecessors, (13026), 4952 states have call successors, (4952), 1068 states have call predecessors, (4952), 1055 states have return successors, (5070), 4890 states have call predecessors, (5070), 4934 states have call successors, (5070) [2022-11-23 14:52:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15911 states to 15911 states and 23048 transitions. [2022-11-23 14:52:58,117 INFO L78 Accepts]: Start accepts. Automaton has 15911 states and 23048 transitions. Word has length 45 [2022-11-23 14:52:58,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:52:58,118 INFO L495 AbstractCegarLoop]: Abstraction has 15911 states and 23048 transitions. [2022-11-23 14:52:58,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 14:52:58,118 INFO L276 IsEmpty]: Start isEmpty. Operand 15911 states and 23048 transitions. [2022-11-23 14:52:58,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 14:52:58,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:52:58,121 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:58,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:52:58,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 14:52:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:52:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash -309788332, now seen corresponding path program 1 times [2022-11-23 14:52:58,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:52:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624764954] [2022-11-23 14:52:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:52:58,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:52:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:53:00,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:00,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624764954] [2022-11-23 14:53:00,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624764954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:00,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:00,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:53:00,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910369719] [2022-11-23 14:53:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:00,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:53:00,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:53:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:53:00,772 INFO L87 Difference]: Start difference. First operand 15911 states and 23048 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:53:04,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:53:06,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:53:08,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:53:10,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:53:13,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:53:17,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:53:19,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:53:26,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:53:28,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:53:30,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:53:34,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:53:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:38,759 INFO L93 Difference]: Finished difference Result 16242 states and 23435 transitions. [2022-11-23 14:53:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:53:38,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2022-11-23 14:53:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:38,850 INFO L225 Difference]: With dead ends: 16242 [2022-11-23 14:53:38,851 INFO L226 Difference]: Without dead ends: 16238 [2022-11-23 14:53:38,867 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 14:53:38,868 INFO L413 NwaCegarLoop]: 4285 mSDtfsCounter, 3250 mSDsluCounter, 12095 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3255 SdHoareTripleChecker+Valid, 16380 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:38,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3255 Valid, 16380 Invalid, 1208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1200 Invalid, 6 Unknown, 0 Unchecked, 37.4s Time] [2022-11-23 14:53:38,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16238 states. [2022-11-23 14:53:39,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16238 to 16213. [2022-11-23 14:53:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16213 states, 10082 states have (on average 1.3144217417179132) internal successors, (13252), 10255 states have internal predecessors, (13252), 5020 states have call successors, (5020), 1120 states have call predecessors, (5020), 1108 states have return successors, (5136), 4950 states have call predecessors, (5136), 5002 states have call successors, (5136) [2022-11-23 14:53:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16213 states to 16213 states and 23408 transitions. [2022-11-23 14:53:39,726 INFO L78 Accepts]: Start accepts. Automaton has 16213 states and 23408 transitions. Word has length 56 [2022-11-23 14:53:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:39,727 INFO L495 AbstractCegarLoop]: Abstraction has 16213 states and 23408 transitions. [2022-11-23 14:53:39,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:53:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 16213 states and 23408 transitions. [2022-11-23 14:53:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 14:53:39,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:39,729 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2022-11-23 14:53:39,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:53:39,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 14:53:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1305246440, now seen corresponding path program 1 times [2022-11-23 14:53:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:39,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464597200] [2022-11-23 14:53:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:39,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 14:53:42,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:42,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464597200] [2022-11-23 14:53:42,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464597200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:42,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:42,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:53:42,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229850039] [2022-11-23 14:53:42,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:42,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:53:42,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:42,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:53:42,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:53:42,087 INFO L87 Difference]: Start difference. First operand 16213 states and 23408 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:53:45,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:53:48,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:53:52,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:53:58,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:53:59,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:54:00,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:54:05,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:54:07,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:54:11,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:54:15,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:54:19,124 WARN L539 Checker$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 14:54:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:54:22,791 INFO L93 Difference]: Finished difference Result 16226 states and 23417 transitions. [2022-11-23 14:54:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:54:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 55 [2022-11-23 14:54:22,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:54:22,883 INFO L225 Difference]: With dead ends: 16226 [2022-11-23 14:54:22,883 INFO L226 Difference]: Without dead ends: 15928 [2022-11-23 14:54:22,898 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 14:54:22,899 INFO L413 NwaCegarLoop]: 4284 mSDtfsCounter, 3300 mSDsluCounter, 12092 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3303 SdHoareTripleChecker+Valid, 16376 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:54:22,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3303 Valid, 16376 Invalid, 1188 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1182 Invalid, 4 Unknown, 0 Unchecked, 40.1s Time] [2022-11-23 14:54:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15928 states. [2022-11-23 14:54:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15928 to 15921. [2022-11-23 14:54:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15921 states, 9900 states have (on average 1.3146464646464646) internal successors, (13015), 10068 states have internal predecessors, (13015), 4925 states have call successors, (4925), 1104 states have call predecessors, (4925), 1093 states have return successors, (5044), 4858 states have call predecessors, (5044), 4910 states have call successors, (5044) [2022-11-23 14:54:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15921 states to 15921 states and 22984 transitions. [2022-11-23 14:54:23,970 INFO L78 Accepts]: Start accepts. Automaton has 15921 states and 22984 transitions. Word has length 55 [2022-11-23 14:54:23,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:54:23,971 INFO L495 AbstractCegarLoop]: Abstraction has 15921 states and 22984 transitions. [2022-11-23 14:54:23,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 14:54:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 15921 states and 22984 transitions. [2022-11-23 14:54:23,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 14:54:23,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:54:23,975 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:23,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:54:23,975 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 14:54:23,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:54:23,976 INFO L85 PathProgramCache]: Analyzing trace with hash 911215182, now seen corresponding path program 1 times [2022-11-23 14:54:23,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:54:23,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916995828] [2022-11-23 14:54:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:54:23,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:54:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:54:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-23 14:54:27,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:54:27,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916995828] [2022-11-23 14:54:27,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916995828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:54:27,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:54:27,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:54:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036060869] [2022-11-23 14:54:27,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:54:27,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:54:27,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:54:27,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:54:27,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:54:27,447 INFO L87 Difference]: Start difference. First operand 15921 states and 22984 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:54:31,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:54:33,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:54:35,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:54:39,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:54:44,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:54:47,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:54:50,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:54:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:54:52,931 INFO L93 Difference]: Finished difference Result 32738 states and 47416 transitions. [2022-11-23 14:54:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:54:52,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2022-11-23 14:54:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:54:53,034 INFO L225 Difference]: With dead ends: 32738 [2022-11-23 14:54:53,034 INFO L226 Difference]: Without dead ends: 16831 [2022-11-23 14:54:53,122 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 14:54:53,123 INFO L413 NwaCegarLoop]: 3768 mSDtfsCounter, 153 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 7342 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:54:53,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 7342 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 616 Invalid, 5 Unknown, 0 Unchecked, 24.9s Time] [2022-11-23 14:54:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16831 states. [2022-11-23 14:54:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16831 to 15927. [2022-11-23 14:54:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15927 states, 9906 states have (on average 1.314455885322027) internal successors, (13021), 10074 states have internal predecessors, (13021), 4925 states have call successors, (4925), 1104 states have call predecessors, (4925), 1093 states have return successors, (5044), 4858 states have call predecessors, (5044), 4910 states have call successors, (5044) [2022-11-23 14:54:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15927 states to 15927 states and 22990 transitions. [2022-11-23 14:54:54,146 INFO L78 Accepts]: Start accepts. Automaton has 15927 states and 22990 transitions. Word has length 100 [2022-11-23 14:54:54,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:54:54,147 INFO L495 AbstractCegarLoop]: Abstraction has 15927 states and 22990 transitions. [2022-11-23 14:54:54,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:54:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 15927 states and 22990 transitions. [2022-11-23 14:54:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 14:54:54,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:54:54,149 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:54:54,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:54:54,150 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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 14:54:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:54:54,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1713999456, now seen corresponding path program 1 times [2022-11-23 14:54:54,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:54:54,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535265771] [2022-11-23 14:54:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:54:54,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:54:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:54:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-23 14:54:55,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:54:55,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535265771] [2022-11-23 14:54:55,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535265771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:54:55,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:54:55,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:54:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957059895] [2022-11-23 14:54:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:54:55,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:54:55,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:54:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:54:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:54:55,426 INFO L87 Difference]: Start difference. First operand 15927 states and 22990 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-23 14:54:59,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:00,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:01,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:03,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:55:05,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:55:07,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:55:10,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:14,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:18,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:21,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:23,073 INFO L93 Difference]: Finished difference Result 32750 states and 47428 transitions. [2022-11-23 14:55:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:55:23,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2022-11-23 14:55:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:23,162 INFO L225 Difference]: With dead ends: 32750 [2022-11-23 14:55:23,162 INFO L226 Difference]: Without dead ends: 16837 [2022-11-23 14:55:23,236 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 14:55:23,236 INFO L413 NwaCegarLoop]: 3766 mSDtfsCounter, 158 mSDsluCounter, 3573 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:23,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 7339 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 615 Invalid, 5 Unknown, 0 Unchecked, 26.9s Time] [2022-11-23 14:55:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16837 states. [2022-11-23 14:55:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16837 to 15927. [2022-11-23 14:55:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15927 states, 9906 states have (on average 1.314455885322027) internal successors, (13021), 10074 states have internal predecessors, (13021), 4925 states have call successors, (4925), 1104 states have call predecessors, (4925), 1093 states have return successors, (5044), 4858 states have call predecessors, (5044), 4910 states have call successors, (5044) [2022-11-23 14:55:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15927 states to 15927 states and 22990 transitions. [2022-11-23 14:55:24,333 INFO L78 Accepts]: Start accepts. Automaton has 15927 states and 22990 transitions. Word has length 113 [2022-11-23 14:55:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:24,334 INFO L495 AbstractCegarLoop]: Abstraction has 15927 states and 22990 transitions. [2022-11-23 14:55:24,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-23 14:55:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15927 states and 22990 transitions. [2022-11-23 14:55:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 14:55:24,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:24,336 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:55:24,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:55:24,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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 14:55:24,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1705102825, now seen corresponding path program 1 times [2022-11-23 14:55:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:24,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141038784] [2022-11-23 14:55:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-23 14:55:27,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:27,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141038784] [2022-11-23 14:55:27,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141038784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:27,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:55:27,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:55:27,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340109823] [2022-11-23 14:55:27,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:27,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:55:27,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:27,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:55:27,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:55:27,801 INFO L87 Difference]: Start difference. First operand 15927 states and 22990 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 14:55:31,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:40,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:55:42,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:55:46,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:55:48,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:55:52,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:55:54,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:55:56,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:58,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:06,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:11,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:14,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:18,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:18,470 INFO L93 Difference]: Finished difference Result 15954 states and 23013 transitions. [2022-11-23 14:56:18,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:56:18,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 115 [2022-11-23 14:56:18,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:18,526 INFO L225 Difference]: With dead ends: 15954 [2022-11-23 14:56:18,526 INFO L226 Difference]: Without dead ends: 15952 [2022-11-23 14:56:18,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 14:56:18,535 INFO L413 NwaCegarLoop]: 5607 mSDtfsCounter, 3144 mSDsluCounter, 14626 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 20233 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:18,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3147 Valid, 20233 Invalid, 1613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1604 Invalid, 7 Unknown, 0 Unchecked, 49.9s Time] [2022-11-23 14:56:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15952 states. [2022-11-23 14:56:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15952 to 15923. [2022-11-23 14:56:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15923 states, 9906 states have (on average 1.314253987482334) internal successors, (13019), 10072 states have internal predecessors, (13019), 4919 states have call successors, (4919), 1104 states have call predecessors, (4919), 1095 states have return successors, (5038), 4856 states have call predecessors, (5038), 4904 states have call successors, (5038) [2022-11-23 14:56:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15923 states to 15923 states and 22976 transitions. [2022-11-23 14:56:19,483 INFO L78 Accepts]: Start accepts. Automaton has 15923 states and 22976 transitions. Word has length 115 [2022-11-23 14:56:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:19,484 INFO L495 AbstractCegarLoop]: Abstraction has 15923 states and 22976 transitions. [2022-11-23 14:56:19,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 14:56:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 15923 states and 22976 transitions. [2022-11-23 14:56:19,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-23 14:56:19,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:56:19,487 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:19,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:56:19,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_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 14:56:19,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:56:19,488 INFO L85 PathProgramCache]: Analyzing trace with hash 499240552, now seen corresponding path program 1 times [2022-11-23 14:56:19,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:56:19,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172620417] [2022-11-23 14:56:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:19,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:56:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-23 14:56:22,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:56:22,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172620417] [2022-11-23 14:56:22,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172620417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:56:22,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:56:22,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:56:22,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749193340] [2022-11-23 14:56:22,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:56:22,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:56:22,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:56:22,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:56:22,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:56:22,204 INFO L87 Difference]: Start difference. First operand 15923 states and 22976 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:56:26,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:27,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:33,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:56:35,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:56:38,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:56:41,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:48,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:52,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:55,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:56,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:56:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:59,479 INFO L93 Difference]: Finished difference Result 18093 states and 26069 transitions. [2022-11-23 14:56:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:56:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 138 [2022-11-23 14:56:59,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:59,549 INFO L225 Difference]: With dead ends: 18093 [2022-11-23 14:56:59,549 INFO L226 Difference]: Without dead ends: 18091 [2022-11-23 14:56:59,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:56:59,562 INFO L413 NwaCegarLoop]: 3903 mSDtfsCounter, 1718 mSDsluCounter, 11235 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 15138 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:59,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 15138 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1203 Invalid, 6 Unknown, 0 Unchecked, 36.5s Time] [2022-11-23 14:56:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18091 states. [2022-11-23 14:57:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18091 to 18063. [2022-11-23 14:57:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18063 states, 11263 states have (on average 1.3153689070407528) internal successors, (14815), 11436 states have internal predecessors, (14815), 5542 states have call successors, (5542), 1266 states have call predecessors, (5542), 1255 states have return successors, (5678), 5474 states have call predecessors, (5678), 5527 states have call successors, (5678) [2022-11-23 14:57:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18063 states to 18063 states and 26035 transitions. [2022-11-23 14:57:00,368 INFO L78 Accepts]: Start accepts. Automaton has 18063 states and 26035 transitions. Word has length 138 [2022-11-23 14:57:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:57:00,369 INFO L495 AbstractCegarLoop]: Abstraction has 18063 states and 26035 transitions. [2022-11-23 14:57:00,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:57:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18063 states and 26035 transitions. [2022-11-23 14:57:00,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-23 14:57:00,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:57:00,372 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:00,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:57:00,372 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 14:57:00,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:57:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash -775990268, now seen corresponding path program 1 times [2022-11-23 14:57:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:57:00,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298198410] [2022-11-23 14:57:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:57:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:57:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:57:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-23 14:57:05,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:57:05,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298198410] [2022-11-23 14:57:05,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298198410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:57:05,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:57:05,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:57:05,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681074004] [2022-11-23 14:57:05,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:57:05,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:57:05,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:57:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:57:05,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:57:05,685 INFO L87 Difference]: Start difference. First operand 18063 states and 26035 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 14:57:09,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:57:16,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:57:18,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:57:22,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:57:25,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:57:27,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:57:34,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:57:36,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:57:39,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:57:43,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:57:46,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:57:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:57:50,658 INFO L93 Difference]: Finished difference Result 18136 states and 26117 transitions. [2022-11-23 14:57:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:57:50,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2022-11-23 14:57:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:57:50,705 INFO L225 Difference]: With dead ends: 18136 [2022-11-23 14:57:50,706 INFO L226 Difference]: Without dead ends: 18134 [2022-11-23 14:57:50,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 14:57:50,712 INFO L413 NwaCegarLoop]: 5098 mSDtfsCounter, 3588 mSDsluCounter, 13728 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 18826 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:57:50,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3593 Valid, 18826 Invalid, 1412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1401 Invalid, 8 Unknown, 0 Unchecked, 44.2s Time] [2022-11-23 14:57:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18134 states. [2022-11-23 14:57:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18134 to 18107. [2022-11-23 14:57:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18107 states, 11290 states have (on average 1.3146147032772364) internal successors, (14842), 11467 states have internal predecessors, (14842), 5554 states have call successors, (5554), 1275 states have call predecessors, (5554), 1260 states have return successors, (5690), 5478 states have call predecessors, (5690), 5539 states have call successors, (5690) [2022-11-23 14:57:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18107 states to 18107 states and 26086 transitions. [2022-11-23 14:57:51,416 INFO L78 Accepts]: Start accepts. Automaton has 18107 states and 26086 transitions. Word has length 148 [2022-11-23 14:57:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:57:51,417 INFO L495 AbstractCegarLoop]: Abstraction has 18107 states and 26086 transitions. [2022-11-23 14:57:51,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 14:57:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 18107 states and 26086 transitions. [2022-11-23 14:57:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-23 14:57:51,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:57:51,422 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:51,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:57:51,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_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 14:57:51,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:57:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1753653320, now seen corresponding path program 1 times [2022-11-23 14:57:51,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:57:51,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486803214] [2022-11-23 14:57:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:57:51,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:57:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:57:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-23 14:57:53,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:57:53,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486803214] [2022-11-23 14:57:53,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486803214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:57:53,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:57:53,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:57:53,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567291862] [2022-11-23 14:57:53,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:57:53,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:57:53,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:57:53,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:57:53,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:57:53,163 INFO L87 Difference]: Start difference. First operand 18107 states and 26086 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-23 14:57:57,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:02,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:05,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:58:08,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:58:11,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:58:13,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:58:15,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:17,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:18,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:26,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:29,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:32,460 WARN L539 Checker$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 14:58:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:58:36,327 INFO L93 Difference]: Finished difference Result 36255 states and 52460 transitions. [2022-11-23 14:58:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:58:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 171 [2022-11-23 14:58:36,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:58:36,392 INFO L225 Difference]: With dead ends: 36255 [2022-11-23 14:58:36,393 INFO L226 Difference]: Without dead ends: 18162 [2022-11-23 14:58:36,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:58:36,478 INFO L413 NwaCegarLoop]: 3572 mSDtfsCounter, 19 mSDsluCounter, 10688 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 14260 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:58:36,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 14260 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1180 Invalid, 8 Unknown, 0 Unchecked, 42.3s Time] [2022-11-23 14:58:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18162 states. [2022-11-23 14:58:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18162 to 18127. [2022-11-23 14:58:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18127 states, 11305 states have (on average 1.3141972578505086) internal successors, (14857), 11482 states have internal predecessors, (14857), 5554 states have call successors, (5554), 1275 states have call predecessors, (5554), 1265 states have return successors, (5700), 5483 states have call predecessors, (5700), 5539 states have call successors, (5700) [2022-11-23 14:58:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18127 states to 18127 states and 26111 transitions. [2022-11-23 14:58:37,263 INFO L78 Accepts]: Start accepts. Automaton has 18127 states and 26111 transitions. Word has length 171 [2022-11-23 14:58:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:58:37,263 INFO L495 AbstractCegarLoop]: Abstraction has 18127 states and 26111 transitions. [2022-11-23 14:58:37,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-23 14:58:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 18127 states and 26111 transitions. [2022-11-23 14:58:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-23 14:58:37,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:37,268 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:58:37,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:58:37,268 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_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 14:58:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1358807248, now seen corresponding path program 1 times [2022-11-23 14:58:37,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:37,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539005837] [2022-11-23 14:58:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:37,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:58:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-23 14:58:38,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:58:38,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539005837] [2022-11-23 14:58:38,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539005837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:58:38,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:58:38,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:58:38,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386055495] [2022-11-23 14:58:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:58:38,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:58:38,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:58:38,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:58:38,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:38,742 INFO L87 Difference]: Start difference. First operand 18127 states and 26111 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 14:58:41,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:46,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:58:48,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:58:51,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:52,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:58:57,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:59:00,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:59:02,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:59:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:05,050 INFO L93 Difference]: Finished difference Result 36290 states and 52520 transitions. [2022-11-23 14:59:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:05,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 174 [2022-11-23 14:59:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:05,110 INFO L225 Difference]: With dead ends: 36290 [2022-11-23 14:59:05,111 INFO L226 Difference]: Without dead ends: 18177 [2022-11-23 14:59:05,172 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 14:59:05,172 INFO L413 NwaCegarLoop]: 3557 mSDtfsCounter, 2 mSDsluCounter, 3552 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7109 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:05,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7109 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 590 Invalid, 5 Unknown, 0 Unchecked, 25.6s Time] [2022-11-23 14:59:05,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18177 states. [2022-11-23 14:59:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18177 to 18137. [2022-11-23 14:59:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18137 states, 11315 states have (on average 1.3139195757843571) internal successors, (14867), 11492 states have internal predecessors, (14867), 5554 states have call successors, (5554), 1275 states have call predecessors, (5554), 1265 states have return successors, (5700), 5483 states have call predecessors, (5700), 5539 states have call successors, (5700) [2022-11-23 14:59:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18137 states to 18137 states and 26121 transitions. [2022-11-23 14:59:05,926 INFO L78 Accepts]: Start accepts. Automaton has 18137 states and 26121 transitions. Word has length 174 [2022-11-23 14:59:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:05,927 INFO L495 AbstractCegarLoop]: Abstraction has 18137 states and 26121 transitions. [2022-11-23 14:59:05,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 14:59:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 18137 states and 26121 transitions. [2022-11-23 14:59:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-23 14:59:05,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:05,933 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:59:05,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:59:05,933 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_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 14:59:05,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash 844649052, now seen corresponding path program 1 times [2022-11-23 14:59:05,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:05,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818389523] [2022-11-23 14:59:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:05,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-23 14:59:07,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:07,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818389523] [2022-11-23 14:59:07,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818389523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:59:07,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866293852] [2022-11-23 14:59:07,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:07,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:07,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:07,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:07,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f7a0b98-ae34-4eb8-b82a-855e065b9e50/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:59:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:12,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 15986 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:59:12,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-23 14:59:12,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-23 14:59:12,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866293852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:59:12,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [722515816] [2022-11-23 14:59:12,866 INFO L159 IcfgInterpreter]: Started Sifa with 145 locations of interest [2022-11-23 14:59:12,867 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:59:12,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:59:12,876 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:59:12,877 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs