./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-libertas-libertas.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/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 4b4d1109d3d8d53e29825c3b476b87cdd6fec06f9f511afc6c3035bd20ad8bf5 --- 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 15:06:52,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:06:52,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:06:52,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:06:52,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:06:52,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:06:52,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:06:52,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:06:52,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:06:52,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:06:52,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:06:52,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:06:52,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:06:52,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:06:52,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:06:52,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:06:52,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:06:52,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:06:52,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:06:52,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:06:52,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:06:52,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:06:52,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:06:52,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:06:52,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:06:52,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:06:52,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:06:52,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:06:52,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:06:52,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:06:52,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:06:52,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:06:52,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:06:52,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:06:52,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:06:52,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:06:52,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:06:52,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:06:52,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:06:52,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:06:52,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:06:52,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:06:52,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:06:52,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:06:52,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:06:52,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:06:52,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:06:52,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:06:52,341 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:06:52,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:06:52,342 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:06:52,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:06:52,343 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:06:52,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:06:52,344 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:06:52,344 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:06:52,344 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:06:52,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:06:52,345 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:06:52,345 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:06:52,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:06:52,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:06:52,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:06:52,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:06:52,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:06:52,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:06:52,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:06:52,347 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:06:52,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:06:52,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:06:52,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:06:52,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:06:52,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:06:52,350 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:06:52,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:06:52,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:06:52,351 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:06:52,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:06:52,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:06:52,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:06:52,352 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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b4d1109d3d8d53e29825c3b476b87cdd6fec06f9f511afc6c3035bd20ad8bf5 [2022-11-23 15:06:52,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:06:52,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:06:52,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:06:52,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:06:52,747 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:06:52,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i [2022-11-23 15:06:55,983 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:06:57,097 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:06:57,098 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i [2022-11-23 15:06:57,204 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/data/e9d3d1b7e/eeb5e0a1c0394f049495562b0c93210b/FLAG063fd1b35 [2022-11-23 15:06:57,223 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/data/e9d3d1b7e/eeb5e0a1c0394f049495562b0c93210b [2022-11-23 15:06:57,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:06:57,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:06:57,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:06:57,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:06:57,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:06:57,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:57" (1/1) ... [2022-11-23 15:06:57,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319405fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:57, skipping insertion in model container [2022-11-23 15:06:57,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:57" (1/1) ... [2022-11-23 15:06:57,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:06:57,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:07:06,732 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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[800980,800993] [2022-11-23 15:07:06,736 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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801146,801159] [2022-11-23 15:07:06,737 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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801310,801323] [2022-11-23 15:07:06,737 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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801475,801488] [2022-11-23 15:07:06,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:07:06,847 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:07:07,840 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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[800980,800993] [2022-11-23 15:07:07,841 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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801146,801159] [2022-11-23 15:07:07,841 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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801310,801323] [2022-11-23 15:07:07,842 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_b8fee7f5-f0b8-4239-84d8-ba34318c7238/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801475,801488] [2022-11-23 15:07:07,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:07:08,290 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:07:08,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08 WrapperNode [2022-11-23 15:07:08,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:07:08,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:07:08,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:07:08,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:07:08,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:08,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:09,248 INFO L138 Inliner]: procedures = 733, calls = 11156, calls flagged for inlining = 427, calls inlined = 391, statements flattened = 21334 [2022-11-23 15:07:09,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:07:09,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:07:09,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:07:09,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:07:09,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:09,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:09,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:09,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:09,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:09,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:10,265 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:10,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:10,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:07:10,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:07:10,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:07:10,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:07:10,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (1/1) ... [2022-11-23 15:07:10,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:07:10,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:07:10,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:07:10,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:07:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mac_event_disconnected [2022-11-23 15:07:10,784 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mac_event_disconnected [2022-11-23 15:07:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_cfg_register [2022-11-23 15:07:10,784 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_cfg_register [2022-11-23 15:07:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2022-11-23 15:07:10,785 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2022-11-23 15:07:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-23 15:07:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:07:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:07:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mesh_access [2022-11-23 15:07:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mesh_access [2022-11-23 15:07:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2022-11-23 15:07:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2022-11-23 15:07:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_35_6 [2022-11-23 15:07:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_35_6 [2022-11-23 15:07:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:07:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:07:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-23 15:07:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-23 15:07:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:07:10,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:07:10,788 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_channel [2022-11-23 15:07:10,788 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_channel [2022-11-23 15:07:10,788 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_add_mesh [2022-11-23 15:07:10,788 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_add_mesh [2022-11-23 15:07:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-23 15:07:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-23 15:07:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_should_stop [2022-11-23 15:07:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_should_stop [2022-11-23 15:07:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 15:07:10,789 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 15:07:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_lbs_private [2022-11-23 15:07:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_lbs_private [2022-11-23 15:07:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_ps_confirm_sleep [2022-11-23 15:07:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_ps_confirm_sleep [2022-11-23 15:07:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~~u16~0~TO~int [2022-11-23 15:07:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~~u16~0~TO~int [2022-11-23 15:07:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_cfg_free [2022-11-23 15:07:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_cfg_free [2022-11-23 15:07:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:07:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:07:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_20 [2022-11-23 15:07:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_20 [2022-11-23 15:07:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_host_sleep_cfg [2022-11-23 15:07:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_host_sleep_cfg [2022-11-23 15:07:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2022-11-23 15:07:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2022-11-23 15:07:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_reg [2022-11-23 15:07:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_reg [2022-11-23 15:07:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 15:07:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:07:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 15:07:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:07:10,794 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:07:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2022-11-23 15:07:10,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2022-11-23 15:07:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:07:10,794 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:07:10,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:07:10,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:07:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 15:07:10,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 15:07:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 15:07:10,795 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 15:07:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-11-23 15:07:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_dummy_resourceless_instance_16 [2022-11-23 15:07:10,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_dummy_resourceless_instance_16 [2022-11-23 15:07:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_key_material [2022-11-23 15:07:10,796 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_key_material [2022-11-23 15:07:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure __lbs_cmd_async [2022-11-23 15:07:10,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __lbs_cmd_async [2022-11-23 15:07:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_wep_keys [2022-11-23 15:07:10,797 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_wep_keys [2022-11-23 15:07:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-23 15:07:10,797 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-23 15:07:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:07:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_auth_to_authtype [2022-11-23 15:07:10,798 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_auth_to_authtype [2022-11-23 15:07:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure auto_deepsleep_timer_fn [2022-11-23 15:07:10,798 INFO L138 BoogieDeclarations]: Found implementation of procedure auto_deepsleep_timer_fn [2022-11-23 15:07:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-23 15:07:10,798 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-23 15:07:10,799 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_sleepparams_read [2022-11-23 15:07:10,799 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_sleepparams_read [2022-11-23 15:07:10,799 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-23 15:07:10,814 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-23 15:07:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-23 15:07:10,815 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-23 15:07:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_get_reg [2022-11-23 15:07:10,815 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_get_reg [2022-11-23 15:07:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_eth_stop [2022-11-23 15:07:10,816 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_eth_stop [2022-11-23 15:07:10,816 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_free_adapter [2022-11-23 15:07:10,816 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_free_adapter [2022-11-23 15:07:10,816 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:07:10,816 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:07:10,816 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_iface_active [2022-11-23 15:07:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_iface_active [2022-11-23 15:07:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure _internal_start_scan [2022-11-23 15:07:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure _internal_start_scan [2022-11-23 15:07:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_ps_mode [2022-11-23 15:07:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_ps_mode [2022-11-23 15:07:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_start_mesh [2022-11-23 15:07:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_start_mesh [2022-11-23 15:07:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-23 15:07:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-23 15:07:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure add_ie_rates [2022-11-23 15:07:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure add_ie_rates [2022-11-23 15:07:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:07:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 15:07:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 15:07:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_28_2 [2022-11-23 15:07:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_28_2 [2022-11-23 15:07:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_mesh [2022-11-23 15:07:10,820 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_mesh [2022-11-23 15:07:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_ethtool_get_eeprom_len [2022-11-23 15:07:10,820 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_ethtool_get_eeprom_len [2022-11-23 15:07:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-11-23 15:07:10,820 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-11-23 15:07:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_cmd_async [2022-11-23 15:07:10,821 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_cmd_async [2022-11-23 15:07:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-23 15:07:10,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-23 15:07:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mesh_activated [2022-11-23 15:07:10,821 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mesh_activated [2022-11-23 15:07:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:07:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure __lbs_complete_command [2022-11-23 15:07:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __lbs_complete_command [2022-11-23 15:07:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 15:07:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 15:07:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-23 15:07:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-23 15:07:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:07:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:07:10,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:07:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 15:07:10,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 15:07:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-23 15:07:10,824 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-23 15:07:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_netdev_mqs [2022-11-23 15:07:10,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_netdev_mqs [2022-11-23 15:07:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-23 15:07:10,824 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-23 15:07:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 15:07:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 15:07:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2022-11-23 15:07:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2022-11-23 15:07:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_disconnect [2022-11-23 15:07:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_disconnect [2022-11-23 15:07:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-11-23 15:07:10,826 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-11-23 15:07:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:07:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2022-11-23 15:07:10,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2022-11-23 15:07:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-23 15:07:10,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-23 15:07:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 15:07:10,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 15:07:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:07:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mesh_stop [2022-11-23 15:07:10,827 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mesh_stop [2022-11-23 15:07:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mesh_dev_open [2022-11-23 15:07:10,827 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mesh_dev_open [2022-11-23 15:07:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:07:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:07:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2022-11-23 15:07:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2022-11-23 15:07:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:07:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:07:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_wep_keys [2022-11-23 15:07:10,829 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_wep_keys [2022-11-23 15:07:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:07:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_complete_command [2022-11-23 15:07:10,829 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_complete_command [2022-11-23 15:07:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:07:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2022-11-23 15:07:10,830 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2022-11-23 15:07:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:07:10,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:07:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-23 15:07:10,830 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-23 15:07:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:07:10,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:07:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 15:07:10,831 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 15:07:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_snmp_mib [2022-11-23 15:07:10,831 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_snmp_mib [2022-11-23 15:07:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_update_mcast [2022-11-23 15:07:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_update_mcast [2022-11-23 15:07:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_11d_domain_info [2022-11-23 15:07:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_11d_domain_info [2022-11-23 15:07:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 15:07:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 15:07:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:07:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:07:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 15:07:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 15:07:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_add_rates [2022-11-23 15:07:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_add_rates [2022-11-23 15:07:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-23 15:07:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-23 15:07:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-23 15:07:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-23 15:07:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-23 15:07:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-23 15:07:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_iface_type [2022-11-23 15:07:10,835 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_iface_type [2022-11-23 15:07:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_mac_control [2022-11-23 15:07:10,835 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_mac_control [2022-11-23 15:07:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-23 15:07:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-23 15:07:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:07:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:07:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_resume [2022-11-23 15:07:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_resume [2022-11-23 15:07:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 15:07:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 15:07:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_dev_open [2022-11-23 15:07:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_dev_open [2022-11-23 15:07:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:07:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:07:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_get_chandef_type [2022-11-23 15:07:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_get_chandef_type [2022-11-23 15:07:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:07:10,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:07:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-23 15:07:10,853 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-23 15:07:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mesh_get_channel [2022-11-23 15:07:10,853 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mesh_get_channel [2022-11-23 15:07:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 15:07:10,854 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 15:07:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 15:07:10,854 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 15:07:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_suspend [2022-11-23 15:07:10,854 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_suspend [2022-11-23 15:07:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-23 15:07:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-23 15:07:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure write_file_dummy [2022-11-23 15:07:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure write_file_dummy [2022-11-23 15:07:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_multicast_list [2022-11-23 15:07:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_multicast_list [2022-11-23 15:07:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2022-11-23 15:07:10,856 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2022-11-23 15:07:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_15 [2022-11-23 15:07:10,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_15 [2022-11-23 15:07:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:07:10,856 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:07:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_get_bss [2022-11-23 15:07:10,857 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_get_bss [2022-11-23 15:07:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_thread [2022-11-23 15:07:10,857 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_thread [2022-11-23 15:07:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_scan_done [2022-11-23 15:07:10,857 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_scan_done [2022-11-23 15:07:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:07:10,858 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:07:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-23 15:07:10,858 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-23 15:07:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-23 15:07:10,858 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-23 15:07:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_14 [2022-11-23 15:07:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_14 [2022-11-23 15:07:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 15:07:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 15:07:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:07:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:07:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:07:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_threshold_read [2022-11-23 15:07:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_threshold_read [2022-11-23 15:07:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_deep_sleep [2022-11-23 15:07:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_deep_sleep [2022-11-23 15:07:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_deb_hex [2022-11-23 15:07:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_deb_hex [2022-11-23 15:07:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 15:07:10,861 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 15:07:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:07:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_threshold_write [2022-11-23 15:07:10,861 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_threshold_write [2022-11-23 15:07:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_setup_firmware [2022-11-23 15:07:10,861 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_setup_firmware [2022-11-23 15:07:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:07:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-23 15:07:10,862 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-23 15:07:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mesh_config [2022-11-23 15:07:10,862 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mesh_config [2022-11-23 15:07:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 15:07:10,863 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 15:07:10,863 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 15:07:10,863 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 15:07:10,863 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_cmd_802_11_sleep_params [2022-11-23 15:07:10,863 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_cmd_802_11_sleep_params [2022-11-23 15:07:10,863 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_monitor_mode [2022-11-23 15:07:10,863 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_monitor_mode [2022-11-23 15:07:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count___1 [2022-11-23 15:07:10,864 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count___1 [2022-11-23 15:07:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure simple_read_from_buffer [2022-11-23 15:07:10,864 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_read_from_buffer [2022-11-23 15:07:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 15:07:10,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 15:07:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 15:07:10,865 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 15:07:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-11-23 15:07:10,865 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-11-23 15:07:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 15:07:10,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 15:07:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_bss_get_ie [2022-11-23 15:07:10,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_bss_get_ie [2022-11-23 15:07:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 15:07:10,866 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 15:07:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure __lbs_cmd [2022-11-23 15:07:10,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __lbs_cmd [2022-11-23 15:07:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_command_queue_empty [2022-11-23 15:07:10,867 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_command_queue_empty [2022-11-23 15:07:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2022-11-23 15:07:10,867 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2022-11-23 15:07:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_enable_rsn [2022-11-23 15:07:10,867 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_enable_rsn [2022-11-23 15:07:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_start_card [2022-11-23 15:07:10,868 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_start_card [2022-11-23 15:07:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 15:07:10,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 15:07:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_process_event [2022-11-23 15:07:10,868 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_process_event [2022-11-23 15:07:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:07:10,869 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:07:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-23 15:07:10,869 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-23 15:07:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_send_mic_failureevent [2022-11-23 15:07:10,869 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_send_mic_failureevent [2022-11-23 15:07:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:07:10,870 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:07:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_join_post [2022-11-23 15:07:10,870 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_join_post [2022-11-23 15:07:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:07:10,870 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:07:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 15:07:10,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 15:07:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure ether_setup [2022-11-23 15:07:10,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_setup [2022-11-23 15:07:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-23 15:07:10,871 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-23 15:07:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:07:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_stop_iface [2022-11-23 15:07:10,872 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_stop_iface [2022-11-23 15:07:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-23 15:07:10,872 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-23 15:07:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:07:10,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:07:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_radio [2022-11-23 15:07:10,872 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_radio [2022-11-23 15:07:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_33_2 [2022-11-23 15:07:10,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_33_2 [2022-11-23 15:07:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_add_mcast_addrs [2022-11-23 15:07:10,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_add_mcast_addrs [2022-11-23 15:07:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_start_iface [2022-11-23 15:07:10,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_start_iface [2022-11-23 15:07:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 15:07:10,874 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 15:07:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_28 [2022-11-23 15:07:10,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_28 [2022-11-23 15:07:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-23 15:07:10,874 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-23 15:07:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure mesh_get_default_parameters [2022-11-23 15:07:10,875 INFO L138 BoogieDeclarations]: Found implementation of procedure mesh_get_default_parameters [2022-11-23 15:07:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_deb_hex___3 [2022-11-23 15:07:10,875 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_deb_hex___3 [2022-11-23 15:07:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_deb_hex___0 [2022-11-23 15:07:10,875 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_deb_hex___0 [2022-11-23 15:07:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_debugfs_read [2022-11-23 15:07:10,876 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_debugfs_read [2022-11-23 15:07:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 15:07:10,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 15:07:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-11-23 15:07:10,876 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-11-23 15:07:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_add_ssid_tlv [2022-11-23 15:07:10,877 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_add_ssid_tlv [2022-11-23 15:07:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 15:07:10,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 15:07:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure __lbs_mesh_config_send [2022-11-23 15:07:10,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __lbs_mesh_config_send [2022-11-23 15:07:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-23 15:07:10,878 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-23 15:07:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mesh_config_send [2022-11-23 15:07:10,878 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mesh_config_send [2022-11-23 15:07:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_disconnected [2022-11-23 15:07:10,878 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_disconnected [2022-11-23 15:07:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 15:07:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 15:07:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure simple_open [2022-11-23 15:07:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_open [2022-11-23 15:07:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure __lbs_cleanup_and_insert_cmd [2022-11-23 15:07:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __lbs_cleanup_and_insert_cmd [2022-11-23 15:07:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-23 15:07:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-23 15:07:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-23 15:07:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_host_sleep [2022-11-23 15:07:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_host_sleep [2022-11-23 15:07:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:07:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:07:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:07:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 15:07:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 15:07:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_lbs_private [2022-11-23 15:07:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_lbs_private [2022-11-23 15:07:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-23 15:07:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-23 15:07:13,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:07:13,474 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:07:16,229 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:16:26,840 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:16:31,172 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:16:31,172 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-23 15:16:31,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:31 BoogieIcfgContainer [2022-11-23 15:16:31,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:16:31,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:16:31,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:16:31,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:16:31,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:06:57" (1/3) ... [2022-11-23 15:16:31,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d787a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:31, skipping insertion in model container [2022-11-23 15:16:31,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:08" (2/3) ... [2022-11-23 15:16:31,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d787a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:31, skipping insertion in model container [2022-11-23 15:16:31,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:31" (3/3) ... [2022-11-23 15:16:31,189 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i [2022-11-23 15:16:31,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:16:31,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 15:16:31,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:16:31,350 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;@3ccc29dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:16:31,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 15:16:31,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 4844 states, 2994 states have (on average 1.3313293253173013) internal successors, (3986), 3180 states have internal predecessors, (3986), 1657 states have call successors, (1657), 192 states have call predecessors, (1657), 191 states have return successors, (1637), 1587 states have call predecessors, (1637), 1637 states have call successors, (1637) [2022-11-23 15:16:31,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:16:31,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:16:31,380 INFO L195 NwaCegarLoop]: trace histogram [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 15:16:31,381 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:16:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:16:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash 460584198, now seen corresponding path program 1 times [2022-11-23 15:16:31,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:16:31,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206653258] [2022-11-23 15:16:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:16:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:16:35,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:16:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206653258] [2022-11-23 15:16:35,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206653258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:16:35,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:16:35,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:16:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310169971] [2022-11-23 15:16:35,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:16:35,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:16:35,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:16:35,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:16:35,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:16:35,849 INFO L87 Difference]: Start difference. First operand has 4844 states, 2994 states have (on average 1.3313293253173013) internal successors, (3986), 3180 states have internal predecessors, (3986), 1657 states have call successors, (1657), 192 states have call predecessors, (1657), 191 states have return successors, (1637), 1587 states have call predecessors, (1637), 1637 states have call successors, (1637) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-23 15:16:38,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:16:43,269 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 15:16:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:16:44,609 INFO L93 Difference]: Finished difference Result 9691 states and 14600 transitions. [2022-11-23 15:16:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:16:44,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2022-11-23 15:16:44,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:16:44,655 INFO L225 Difference]: With dead ends: 9691 [2022-11-23 15:16:44,655 INFO L226 Difference]: Without dead ends: 4833 [2022-11-23 15:16:44,681 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 15:16:44,684 INFO L413 NwaCegarLoop]: 6707 mSDtfsCounter, 37 mSDsluCounter, 6687 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 13394 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:16:44,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 13394 Invalid, 1096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1094 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 15:16:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2022-11-23 15:16:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 4833. [2022-11-23 15:16:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4833 states, 2997 states have (on average 1.3219886553219886) internal successors, (3962), 3167 states have internal predecessors, (3962), 1636 states have call successors, (1636), 198 states have call predecessors, (1636), 197 states have return successors, (1633), 1583 states have call predecessors, (1633), 1633 states have call successors, (1633) [2022-11-23 15:16:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 7231 transitions. [2022-11-23 15:16:45,360 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 7231 transitions. Word has length 34 [2022-11-23 15:16:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:16:45,361 INFO L495 AbstractCegarLoop]: Abstraction has 4833 states and 7231 transitions. [2022-11-23 15:16:45,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-23 15:16:45,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 7231 transitions. [2022-11-23 15:16:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 15:16:45,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:16:45,367 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:16:45,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:16:45,368 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:16:45,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:16:45,369 INFO L85 PathProgramCache]: Analyzing trace with hash 534665862, now seen corresponding path program 1 times [2022-11-23 15:16:45,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:16:45,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469771991] [2022-11-23 15:16:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:16:45,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:16:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:16:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:16:49,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:16:49,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469771991] [2022-11-23 15:16:49,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469771991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:16:49,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:16:49,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:16:49,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592452313] [2022-11-23 15:16:49,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:16:49,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:16:49,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:16:49,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:16:49,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:16:49,414 INFO L87 Difference]: Start difference. First operand 4833 states and 7231 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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 15:16:51,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:16:58,641 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 15:17:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:02,389 INFO L93 Difference]: Finished difference Result 5460 states and 8053 transitions. [2022-11-23 15:17:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:17:02,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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 48 [2022-11-23 15:17:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:02,425 INFO L225 Difference]: With dead ends: 5460 [2022-11-23 15:17:02,426 INFO L226 Difference]: Without dead ends: 5458 [2022-11-23 15:17:02,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:17:02,432 INFO L413 NwaCegarLoop]: 6817 mSDtfsCounter, 4303 mSDsluCounter, 17030 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4307 SdHoareTripleChecker+Valid, 23847 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:02,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4307 Valid, 23847 Invalid, 1965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1962 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2022-11-23 15:17:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2022-11-23 15:17:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 5458. [2022-11-23 15:17:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 3385 states have (on average 1.317282127031019) internal successors, (4459), 3565 states have internal predecessors, (4459), 1797 states have call successors, (1797), 274 states have call predecessors, (1797), 273 states have return successors, (1795), 1744 states have call predecessors, (1795), 1794 states have call successors, (1795) [2022-11-23 15:17:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 8051 transitions. [2022-11-23 15:17:02,863 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 8051 transitions. Word has length 48 [2022-11-23 15:17:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:02,864 INFO L495 AbstractCegarLoop]: Abstraction has 5458 states and 8051 transitions. [2022-11-23 15:17:02,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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 15:17:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 8051 transitions. [2022-11-23 15:17:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 15:17:02,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:02,874 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:17:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:17:02,875 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:17:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:02,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1985641347, now seen corresponding path program 1 times [2022-11-23 15:17:02,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:02,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786464305] [2022-11-23 15:17:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:17:06,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:06,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786464305] [2022-11-23 15:17:06,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786464305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:06,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:06,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:17:06,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649945062] [2022-11-23 15:17:06,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:06,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:17:06,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:17:06,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:17:06,602 INFO L87 Difference]: Start difference. First operand 5458 states and 8051 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 15:17:08,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:17:14,936 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 15:17:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:17,443 INFO L93 Difference]: Finished difference Result 5464 states and 8056 transitions. [2022-11-23 15:17:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:17:17,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 53 [2022-11-23 15:17:17,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:17,476 INFO L225 Difference]: With dead ends: 5464 [2022-11-23 15:17:17,476 INFO L226 Difference]: Without dead ends: 5462 [2022-11-23 15:17:17,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:17:17,482 INFO L413 NwaCegarLoop]: 6820 mSDtfsCounter, 4298 mSDsluCounter, 17030 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 23850 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:17,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4301 Valid, 23850 Invalid, 1965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1962 Invalid, 2 Unknown, 0 Unchecked, 10.5s Time] [2022-11-23 15:17:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2022-11-23 15:17:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 5462. [2022-11-23 15:17:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5462 states, 3388 states have (on average 1.3170011806375443) internal successors, (4462), 3568 states have internal predecessors, (4462), 1797 states have call successors, (1797), 275 states have call predecessors, (1797), 274 states have return successors, (1795), 1744 states have call predecessors, (1795), 1794 states have call successors, (1795) [2022-11-23 15:17:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5462 states to 5462 states and 8054 transitions. [2022-11-23 15:17:17,852 INFO L78 Accepts]: Start accepts. Automaton has 5462 states and 8054 transitions. Word has length 53 [2022-11-23 15:17:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:17,853 INFO L495 AbstractCegarLoop]: Abstraction has 5462 states and 8054 transitions. [2022-11-23 15:17:17,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 15:17:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5462 states and 8054 transitions. [2022-11-23 15:17:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 15:17:17,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:17,855 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:17,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:17:17,856 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:17:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash 407472230, now seen corresponding path program 1 times [2022-11-23 15:17:17,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:17,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804781624] [2022-11-23 15:17:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 15:17:21,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:21,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804781624] [2022-11-23 15:17:21,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804781624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:21,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:21,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:17:21,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062779551] [2022-11-23 15:17:21,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:21,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:17:21,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:21,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:17:21,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:17:21,283 INFO L87 Difference]: Start difference. First operand 5462 states and 8054 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 15:17:23,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:17:29,218 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 15:17:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:33,754 INFO L93 Difference]: Finished difference Result 8327 states and 12220 transitions. [2022-11-23 15:17:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:17:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 58 [2022-11-23 15:17:33,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:33,808 INFO L225 Difference]: With dead ends: 8327 [2022-11-23 15:17:33,808 INFO L226 Difference]: Without dead ends: 8323 [2022-11-23 15:17:33,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:17:33,816 INFO L413 NwaCegarLoop]: 8992 mSDtfsCounter, 6905 mSDsluCounter, 21637 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6906 SdHoareTripleChecker+Valid, 30629 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:33,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6906 Valid, 30629 Invalid, 2495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2490 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-11-23 15:17:33,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8323 states. [2022-11-23 15:17:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8323 to 8309. [2022-11-23 15:17:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8309 states, 5195 states have (on average 1.3199230028873916) internal successors, (6857), 5451 states have internal predecessors, (6857), 2642 states have call successors, (2642), 471 states have call predecessors, (2642), 469 states have return successors, (2703), 2574 states have call predecessors, (2703), 2637 states have call successors, (2703) [2022-11-23 15:17:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8309 states to 8309 states and 12202 transitions. [2022-11-23 15:17:34,381 INFO L78 Accepts]: Start accepts. Automaton has 8309 states and 12202 transitions. Word has length 58 [2022-11-23 15:17:34,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:34,381 INFO L495 AbstractCegarLoop]: Abstraction has 8309 states and 12202 transitions. [2022-11-23 15:17:34,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 15:17:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 8309 states and 12202 transitions. [2022-11-23 15:17:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 15:17:34,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:34,385 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:34,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:17:34,386 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:17:34,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:34,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1364928803, now seen corresponding path program 1 times [2022-11-23 15:17:34,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:34,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624618466] [2022-11-23 15:17:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-23 15:17:37,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:37,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624618466] [2022-11-23 15:17:37,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624618466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:37,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:37,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:17:37,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308718313] [2022-11-23 15:17:37,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:37,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:17:37,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:37,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:17:37,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:17:37,993 INFO L87 Difference]: Start difference. First operand 8309 states and 12202 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 15:17:40,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:17:45,752 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 15:17:48,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:48,038 INFO L93 Difference]: Finished difference Result 8315 states and 12207 transitions. [2022-11-23 15:17:48,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:17:48,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 63 [2022-11-23 15:17:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:48,093 INFO L225 Difference]: With dead ends: 8315 [2022-11-23 15:17:48,093 INFO L226 Difference]: Without dead ends: 8153 [2022-11-23 15:17:48,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:17:48,101 INFO L413 NwaCegarLoop]: 6821 mSDtfsCounter, 4298 mSDsluCounter, 17032 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4299 SdHoareTripleChecker+Valid, 23853 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:48,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4299 Valid, 23853 Invalid, 1962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1959 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2022-11-23 15:17:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8153 states. [2022-11-23 15:17:48,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8153 to 8153. [2022-11-23 15:17:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8153 states, 5104 states have (on average 1.3203369905956113) internal successors, (6739), 5349 states have internal predecessors, (6739), 2582 states have call successors, (2582), 465 states have call predecessors, (2582), 464 states have return successors, (2646), 2517 states have call predecessors, (2646), 2580 states have call successors, (2646) [2022-11-23 15:17:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8153 states to 8153 states and 11967 transitions. [2022-11-23 15:17:48,805 INFO L78 Accepts]: Start accepts. Automaton has 8153 states and 11967 transitions. Word has length 63 [2022-11-23 15:17:48,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:48,805 INFO L495 AbstractCegarLoop]: Abstraction has 8153 states and 11967 transitions. [2022-11-23 15:17:48,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 15:17:48,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8153 states and 11967 transitions. [2022-11-23 15:17:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1659 [2022-11-23 15:17:48,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:48,951 INFO L195 NwaCegarLoop]: trace histogram [137, 137, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 47, 42, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:48,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:17:48,952 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:17:48,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1188283128, now seen corresponding path program 1 times [2022-11-23 15:17:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:48,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450859184] [2022-11-23 15:17:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:48,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 51749 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51749 trivial. 0 not checked. [2022-11-23 15:18:03,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:03,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450859184] [2022-11-23 15:18:03,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450859184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:03,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:03,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:18:03,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800944051] [2022-11-23 15:18:03,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:03,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:18:03,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:03,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:18:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:18:03,914 INFO L87 Difference]: Start difference. First operand 8153 states and 11967 transitions. Second operand has 8 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 2 states have call successors, (190), 2 states have call predecessors, (190), 3 states have return successors, (180), 4 states have call predecessors, (180), 2 states have call successors, (180) [2022-11-23 15:18:06,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:15,806 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 15:18:19,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:19,147 INFO L93 Difference]: Finished difference Result 13775 states and 20247 transitions. [2022-11-23 15:18:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:18:19,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 2 states have call successors, (190), 2 states have call predecessors, (190), 3 states have return successors, (180), 4 states have call predecessors, (180), 2 states have call successors, (180) Word has length 1658 [2022-11-23 15:18:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:19,190 INFO L225 Difference]: With dead ends: 13775 [2022-11-23 15:18:19,190 INFO L226 Difference]: Without dead ends: 8217 [2022-11-23 15:18:19,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:18:19,221 INFO L413 NwaCegarLoop]: 6666 mSDtfsCounter, 11 mSDsluCounter, 39970 mSDsCounter, 0 mSdLazyCounter, 3841 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 46636 SdHoareTripleChecker+Invalid, 3843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3841 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:19,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 46636 Invalid, 3843 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 3841 Invalid, 2 Unknown, 0 Unchecked, 14.7s Time] [2022-11-23 15:18:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8217 states. [2022-11-23 15:18:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8217 to 8197. [2022-11-23 15:18:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 5134 states have (on average 1.3192442539929878) internal successors, (6773), 5381 states have internal predecessors, (6773), 2586 states have call successors, (2586), 465 states have call predecessors, (2586), 474 states have return successors, (2666), 2529 states have call predecessors, (2666), 2584 states have call successors, (2666) [2022-11-23 15:18:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 12025 transitions. [2022-11-23 15:18:19,779 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 12025 transitions. Word has length 1658 [2022-11-23 15:18:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:19,784 INFO L495 AbstractCegarLoop]: Abstraction has 8197 states and 12025 transitions. [2022-11-23 15:18:19,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 2 states have call successors, (190), 2 states have call predecessors, (190), 3 states have return successors, (180), 4 states have call predecessors, (180), 2 states have call successors, (180) [2022-11-23 15:18:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 12025 transitions. [2022-11-23 15:18:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2022-11-23 15:18:19,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:19,889 INFO L195 NwaCegarLoop]: trace histogram [139, 139, 68, 67, 67, 67, 67, 67, 67, 67, 67, 67, 47, 42, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:19,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:18:19,890 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:19,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:19,891 INFO L85 PathProgramCache]: Analyzing trace with hash -128549508, now seen corresponding path program 1 times [2022-11-23 15:18:19,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:19,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009547323] [2022-11-23 15:18:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:19,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:20,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:18:20,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039785549] [2022-11-23 15:18:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:20,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:18:20,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:18:20,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:18:20,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:18:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:27,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 25739 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-23 15:18:27,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:18:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 52708 backedges. 506 proven. 0 refuted. 0 times theorem prover too weak. 52202 trivial. 0 not checked. [2022-11-23 15:18:28,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:18:28,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:28,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009547323] [2022-11-23 15:18:28,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:18:28,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039785549] [2022-11-23 15:18:28,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039785549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:28,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:28,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:18:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285941150] [2022-11-23 15:18:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:28,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:18:28,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:28,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:18:28,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:18:28,012 INFO L87 Difference]: Start difference. First operand 8197 states and 12025 transitions. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (194), 3 states have call predecessors, (194), 4 states have return successors, (184), 4 states have call predecessors, (184), 3 states have call successors, (184) [2022-11-23 15:18:30,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:38,127 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 15:18:40,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:40,731 INFO L93 Difference]: Finished difference Result 13859 states and 20351 transitions. [2022-11-23 15:18:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:18:40,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (194), 3 states have call predecessors, (194), 4 states have return successors, (184), 4 states have call predecessors, (184), 3 states have call successors, (184) Word has length 1675 [2022-11-23 15:18:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:40,774 INFO L225 Difference]: With dead ends: 13859 [2022-11-23 15:18:40,774 INFO L226 Difference]: Without dead ends: 8257 [2022-11-23 15:18:40,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1675 GetRequests, 1670 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:18:40,805 INFO L413 NwaCegarLoop]: 6657 mSDtfsCounter, 53 mSDsluCounter, 26580 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 33237 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2741 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:40,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 33237 Invalid, 2744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2741 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2022-11-23 15:18:40,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8257 states. [2022-11-23 15:18:41,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8257 to 8215. [2022-11-23 15:18:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8215 states, 5146 states have (on average 1.3184998056743102) internal successors, (6785), 5395 states have internal predecessors, (6785), 2588 states have call successors, (2588), 465 states have call predecessors, (2588), 478 states have return successors, (2672), 2535 states have call predecessors, (2672), 2586 states have call successors, (2672) [2022-11-23 15:18:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8215 states to 8215 states and 12045 transitions. [2022-11-23 15:18:41,472 INFO L78 Accepts]: Start accepts. Automaton has 8215 states and 12045 transitions. Word has length 1675 [2022-11-23 15:18:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:41,475 INFO L495 AbstractCegarLoop]: Abstraction has 8215 states and 12045 transitions. [2022-11-23 15:18:41,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (194), 3 states have call predecessors, (194), 4 states have return successors, (184), 4 states have call predecessors, (184), 3 states have call successors, (184) [2022-11-23 15:18:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 8215 states and 12045 transitions. [2022-11-23 15:18:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1697 [2022-11-23 15:18:41,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:41,520 INFO L195 NwaCegarLoop]: trace histogram [141, 141, 69, 68, 68, 68, 68, 68, 68, 68, 68, 68, 47, 42, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:41,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:18:41,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:18:41,747 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:18:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:41,748 INFO L85 PathProgramCache]: Analyzing trace with hash -93953974, now seen corresponding path program 1 times [2022-11-23 15:18:41,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:41,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025544358] [2022-11-23 15:18:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:41,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:42,524 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:18:42,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583043171] [2022-11-23 15:18:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:42,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:18:42,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:18:42,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:18:42,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fee7f5-f0b8-4239-84d8-ba34318c7238/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:19:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:18,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 25843 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-23 15:19:18,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:19:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 54150 backedges. 2 proven. 278 refuted. 0 times theorem prover too weak. 53870 trivial. 0 not checked. [2022-11-23 15:19:23,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:19:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 54150 backedges. 2 proven. 278 refuted. 0 times theorem prover too weak. 53870 trivial. 0 not checked. [2022-11-23 15:19:26,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:26,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025544358] [2022-11-23 15:19:26,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:19:26,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583043171] [2022-11-23 15:19:26,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583043171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:19:26,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1394725658] [2022-11-23 15:19:26,720 INFO L159 IcfgInterpreter]: Started Sifa with 482 locations of interest [2022-11-23 15:19:26,720 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:19:26,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:19:26,730 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:19:26,731 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs