./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:49:00,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:49:00,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:49:01,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:49:01,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:49:01,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:49:01,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:49:01,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:49:01,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:49:01,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:49:01,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:49:01,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:49:01,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:49:01,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:49:01,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:49:01,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:49:01,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:49:01,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:49:01,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:49:01,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:49:01,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:49:01,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:49:01,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:49:01,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:49:01,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:49:01,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:49:01,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:49:01,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:49:01,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:49:01,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:49:01,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:49:01,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:49:01,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:49:01,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:49:01,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:49:01,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:49:01,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:49:01,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:49:01,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:49:01,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:49:01,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:49:01,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:49:01,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:49:01,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:49:01,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:49:01,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:49:01,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:49:01,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:49:01,096 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:49:01,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:49:01,096 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:49:01,097 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:49:01,097 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:49:01,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:49:01,097 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:49:01,097 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:49:01,098 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:49:01,098 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:49:01,098 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:49:01,098 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:49:01,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:49:01,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:49:01,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:49:01,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:49:01,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:49:01,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:49:01,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:49:01,100 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:49:01,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:49:01,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:49:01,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:49:01,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:49:01,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:49:01,102 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:49:01,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:49:01,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:49:01,102 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:49:01,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:49:01,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:49:01,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:49:01,103 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_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 [2022-11-26 00:49:01,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:49:01,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:49:01,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:49:01,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:49:01,434 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:49:01,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2022-11-26 00:49:04,467 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:49:05,104 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:49:05,105 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2022-11-26 00:49:05,152 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/data/eced9fb5b/b6850ffe08d14d018f77d3b72d4c86cc/FLAGade31aaf7 [2022-11-26 00:49:05,168 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/data/eced9fb5b/b6850ffe08d14d018f77d3b72d4c86cc [2022-11-26 00:49:05,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:49:05,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:49:05,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:49:05,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:49:05,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:49:05,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:49:05" (1/1) ... [2022-11-26 00:49:05,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e83db13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:05, skipping insertion in model container [2022-11-26 00:49:05,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:49:05" (1/1) ... [2022-11-26 00:49:05,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:49:05,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:49:06,085 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-11-26 00:49:06,254 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-26 00:49:06,270 WARN L623 FunctionHandler]: Unknown extern function devm_kmalloc [2022-11-26 00:49:06,414 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-11-26 00:49:06,422 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:49:06,460 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-11-26 00:49:06,503 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-26 00:49:06,505 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 00:49:06,518 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:49:06,519 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:49:06,604 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-26 00:49:06,693 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-11-26 00:49:06,735 WARN L623 FunctionHandler]: Unknown extern function spi_sync [2022-11-26 00:49:06,771 WARN L623 FunctionHandler]: Unknown extern function clk_prepare [2022-11-26 00:49:06,772 WARN L623 FunctionHandler]: Unknown extern function clk_enable [2022-11-26 00:49:06,773 WARN L623 FunctionHandler]: Unknown extern function clk_unprepare [2022-11-26 00:49:06,779 WARN L623 FunctionHandler]: Unknown extern function clk_disable [2022-11-26 00:49:06,780 WARN L623 FunctionHandler]: Unknown extern function clk_unprepare [2022-11-26 00:49:06,813 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:49:06,816 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-11-26 00:49:06,824 WARN L623 FunctionHandler]: Unknown extern function spi_sync [2022-11-26 00:49:06,830 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:06,885 WARN L623 FunctionHandler]: Unknown extern function alloc_can_skb [2022-11-26 00:49:06,886 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:06,892 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-11-26 00:49:06,893 WARN L623 FunctionHandler]: Unknown extern function netif_rx_ni [2022-11-26 00:49:06,903 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-26 00:49:06,915 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-11-26 00:49:06,916 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:06,923 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-26 00:49:06,933 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:06,934 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:49:06,934 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-11-26 00:49:06,935 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:06,944 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:49:06,950 WARN L623 FunctionHandler]: Unknown extern function regulator_enable [2022-11-26 00:49:06,950 WARN L623 FunctionHandler]: Unknown extern function regulator_disable [2022-11-26 00:49:06,955 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-26 00:49:06,959 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-26 00:49:06,960 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-11-26 00:49:06,961 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-11-26 00:49:06,966 WARN L623 FunctionHandler]: Unknown extern function alloc_can_err_skb [2022-11-26 00:49:06,967 WARN L623 FunctionHandler]: Unknown extern function netif_rx_ni [2022-11-26 00:49:06,967 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:49:06,973 WARN L623 FunctionHandler]: Unknown extern function can_put_echo_skb [2022-11-26 00:49:06,980 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:49:06,982 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-11-26 00:49:07,013 WARN L623 FunctionHandler]: Unknown extern function can_bus_off [2022-11-26 00:49:07,014 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-11-26 00:49:07,015 WARN L623 FunctionHandler]: Unknown extern function can_get_echo_skb [2022-11-26 00:49:07,020 WARN L623 FunctionHandler]: Unknown extern function open_candev [2022-11-26 00:49:07,021 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:07,023 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:07,024 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-26 00:49:07,024 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-11-26 00:49:07,025 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-26 00:49:07,029 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-26 00:49:07,030 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-26 00:49:07,030 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-26 00:49:07,031 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-11-26 00:49:07,048 WARN L623 FunctionHandler]: Unknown extern function devm_clk_get [2022-11-26 00:49:07,050 WARN L623 FunctionHandler]: Unknown extern function clk_get_rate [2022-11-26 00:49:07,051 WARN L623 FunctionHandler]: Unknown extern function alloc_candev [2022-11-26 00:49:07,057 WARN L623 FunctionHandler]: Unknown extern function spi_get_device_id [2022-11-26 00:49:07,057 WARN L623 FunctionHandler]: Unknown extern function devm_regulator_get [2022-11-26 00:49:07,059 WARN L623 FunctionHandler]: Unknown extern function devm_regulator_get [2022-11-26 00:49:07,061 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-11-26 00:49:07,067 WARN L623 FunctionHandler]: Unknown extern function spi_setup [2022-11-26 00:49:07,068 WARN L623 FunctionHandler]: Unknown extern function devm_can_led_init [2022-11-26 00:49:07,068 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-26 00:49:07,070 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-11-26 00:49:07,075 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-11-26 00:49:07,080 WARN L623 FunctionHandler]: Unknown extern function disable_irq [2022-11-26 00:49:07,081 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-26 00:49:07,081 WARN L623 FunctionHandler]: Unknown extern function regulator_disable [2022-11-26 00:49:07,087 WARN L623 FunctionHandler]: Unknown extern function enable_irq [2022-11-26 00:49:07,411 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:49:07,411 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:49:07,422 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-11-26 00:49:07,440 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-11-26 00:49:07,454 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:49:07,454 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:49:07,456 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-26 00:49:07,457 WARN L623 FunctionHandler]: Unknown extern function register_candev [2022-11-26 00:49:07,458 WARN L623 FunctionHandler]: Unknown extern function unregister_candev [2022-11-26 00:49:07,458 WARN L623 FunctionHandler]: Unknown extern function spi_register_driver [2022-11-26 00:49:07,505 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-26 00:49:07,505 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-26 00:49:07,515 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-26 00:49:07,705 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_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2022-11-26 00:49:07,708 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_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2022-11-26 00:49:07,709 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_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2022-11-26 00:49:07,709 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_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2022-11-26 00:49:07,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:49:07,772 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:49:07,891 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-11-26 00:49:07,900 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-26 00:49:07,900 WARN L623 FunctionHandler]: Unknown extern function devm_kmalloc [2022-11-26 00:49:07,908 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-11-26 00:49:07,910 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:49:07,911 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-11-26 00:49:07,912 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-26 00:49:07,913 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 00:49:07,914 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:49:07,915 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:49:07,922 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-26 00:49:07,924 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-11-26 00:49:07,927 WARN L623 FunctionHandler]: Unknown extern function spi_sync [2022-11-26 00:49:07,928 WARN L623 FunctionHandler]: Unknown extern function clk_prepare [2022-11-26 00:49:07,928 WARN L623 FunctionHandler]: Unknown extern function clk_enable [2022-11-26 00:49:07,929 WARN L623 FunctionHandler]: Unknown extern function clk_unprepare [2022-11-26 00:49:07,930 WARN L623 FunctionHandler]: Unknown extern function clk_disable [2022-11-26 00:49:07,930 WARN L623 FunctionHandler]: Unknown extern function clk_unprepare [2022-11-26 00:49:07,932 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:49:07,932 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-11-26 00:49:07,934 WARN L623 FunctionHandler]: Unknown extern function spi_sync [2022-11-26 00:49:07,934 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:07,950 WARN L623 FunctionHandler]: Unknown extern function alloc_can_skb [2022-11-26 00:49:07,950 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:07,954 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-11-26 00:49:07,954 WARN L623 FunctionHandler]: Unknown extern function netif_rx_ni [2022-11-26 00:49:07,956 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-26 00:49:07,958 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-11-26 00:49:07,960 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:07,962 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-26 00:49:07,964 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:07,964 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:49:07,966 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-11-26 00:49:07,966 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:07,970 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:49:07,971 WARN L623 FunctionHandler]: Unknown extern function regulator_enable [2022-11-26 00:49:07,971 WARN L623 FunctionHandler]: Unknown extern function regulator_disable [2022-11-26 00:49:07,973 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-26 00:49:07,974 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-26 00:49:07,975 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-11-26 00:49:07,976 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-11-26 00:49:07,976 WARN L623 FunctionHandler]: Unknown extern function alloc_can_err_skb [2022-11-26 00:49:07,978 WARN L623 FunctionHandler]: Unknown extern function netif_rx_ni [2022-11-26 00:49:07,978 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:49:07,981 WARN L623 FunctionHandler]: Unknown extern function can_put_echo_skb [2022-11-26 00:49:07,982 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:49:07,983 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-11-26 00:49:07,997 WARN L623 FunctionHandler]: Unknown extern function can_bus_off [2022-11-26 00:49:07,998 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-11-26 00:49:07,999 WARN L623 FunctionHandler]: Unknown extern function can_get_echo_skb [2022-11-26 00:49:08,001 WARN L623 FunctionHandler]: Unknown extern function open_candev [2022-11-26 00:49:08,005 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:08,006 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 00:49:08,007 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-26 00:49:08,008 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-11-26 00:49:08,012 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-26 00:49:08,013 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-26 00:49:08,014 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-26 00:49:08,014 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-26 00:49:08,015 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-11-26 00:49:08,025 WARN L623 FunctionHandler]: Unknown extern function devm_clk_get [2022-11-26 00:49:08,026 WARN L623 FunctionHandler]: Unknown extern function clk_get_rate [2022-11-26 00:49:08,026 WARN L623 FunctionHandler]: Unknown extern function alloc_candev [2022-11-26 00:49:08,028 WARN L623 FunctionHandler]: Unknown extern function spi_get_device_id [2022-11-26 00:49:08,028 WARN L623 FunctionHandler]: Unknown extern function devm_regulator_get [2022-11-26 00:49:08,029 WARN L623 FunctionHandler]: Unknown extern function devm_regulator_get [2022-11-26 00:49:08,032 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-11-26 00:49:08,038 WARN L623 FunctionHandler]: Unknown extern function spi_setup [2022-11-26 00:49:08,039 WARN L623 FunctionHandler]: Unknown extern function devm_can_led_init [2022-11-26 00:49:08,039 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-26 00:49:08,040 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-11-26 00:49:08,042 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-11-26 00:49:08,043 WARN L623 FunctionHandler]: Unknown extern function disable_irq [2022-11-26 00:49:08,043 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-26 00:49:08,044 WARN L623 FunctionHandler]: Unknown extern function regulator_disable [2022-11-26 00:49:08,045 WARN L623 FunctionHandler]: Unknown extern function enable_irq [2022-11-26 00:49:08,102 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:49:08,103 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:49:08,109 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-11-26 00:49:08,134 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-11-26 00:49:08,138 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:49:08,139 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:49:08,139 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-26 00:49:08,140 WARN L623 FunctionHandler]: Unknown extern function register_candev [2022-11-26 00:49:08,140 WARN L623 FunctionHandler]: Unknown extern function unregister_candev [2022-11-26 00:49:08,141 WARN L623 FunctionHandler]: Unknown extern function spi_register_driver [2022-11-26 00:49:08,143 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-26 00:49:08,144 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-26 00:49:08,144 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-26 00:49:08,153 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_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2022-11-26 00:49:08,154 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_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2022-11-26 00:49:08,154 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_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2022-11-26 00:49:08,155 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_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2022-11-26 00:49:08,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:49:08,265 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:49:08,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08 WrapperNode [2022-11-26 00:49:08,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:49:08,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:49:08,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:49:08,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:49:08,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,555 INFO L138 Inliner]: procedures = 340, calls = 1537, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4110 [2022-11-26 00:49:08,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:49:08,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:49:08,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:49:08,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:49:08,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,854 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:49:08,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:49:08,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:49:08,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:49:08,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (1/1) ... [2022-11-26 00:49:08,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:49:08,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:49:08,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:49:08,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:49:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-26 00:49:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-26 00:49:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-26 00:49:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-26 00:49:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-26 00:49:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-26 00:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-26 00:49:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-26 00:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-26 00:49:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-26 00:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-26 00:49:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-26 00:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2022-11-26 00:49:08,971 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2022-11-26 00:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-26 00:49:08,971 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-26 00:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-11-26 00:49:08,971 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-11-26 00:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2022-11-26 00:49:08,971 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2022-11-26 00:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-26 00:49:08,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-26 00:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-26 00:49:08,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-26 00:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2022-11-26 00:49:08,972 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2022-11-26 00:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:49:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-26 00:49:08,973 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-26 00:49:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:49:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-26 00:49:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-26 00:49:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2022-11-26 00:49:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2022-11-26 00:49:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2022-11-26 00:49:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2022-11-26 00:49:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-26 00:49:08,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-26 00:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-26 00:49:08,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-26 00:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2022-11-26 00:49:08,975 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2022-11-26 00:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-11-26 00:49:08,975 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-11-26 00:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:49:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:49:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-26 00:49:08,976 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-26 00:49:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-26 00:49:08,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-26 00:49:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-26 00:49:08,976 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-26 00:49:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-26 00:49:08,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-26 00:49:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2022-11-26 00:49:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2022-11-26 00:49:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-26 00:49:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-26 00:49:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-26 00:49:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-26 00:49:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-26 00:49:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-26 00:49:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2022-11-26 00:49:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2022-11-26 00:49:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-26 00:49:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-26 00:49:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-26 00:49:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-26 00:49:08,985 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2022-11-26 00:49:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2022-11-26 00:49:08,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-26 00:49:08,985 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2022-11-26 00:49:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2022-11-26 00:49:08,985 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-26 00:49:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-26 00:49:08,986 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2022-11-26 00:49:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2022-11-26 00:49:08,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:49:08,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-26 00:49:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-26 00:49:08,986 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2022-11-26 00:49:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2022-11-26 00:49:08,987 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2022-11-26 00:49:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2022-11-26 00:49:08,987 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-26 00:49:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-26 00:49:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:49:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-26 00:49:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-26 00:49:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2022-11-26 00:49:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2022-11-26 00:49:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-26 00:49:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-26 00:49:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-26 00:49:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-26 00:49:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-26 00:49:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-26 00:49:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2022-11-26 00:49:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2022-11-26 00:49:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-26 00:49:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-26 00:49:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2022-11-26 00:49:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2022-11-26 00:49:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:49:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2022-11-26 00:49:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2022-11-26 00:49:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2022-11-26 00:49:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2022-11-26 00:49:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2022-11-26 00:49:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2022-11-26 00:49:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2022-11-26 00:49:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2022-11-26 00:49:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-26 00:49:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-26 00:49:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2022-11-26 00:49:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2022-11-26 00:49:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:49:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-26 00:49:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-26 00:49:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-26 00:49:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-26 00:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-26 00:49:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-26 00:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-26 00:49:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-26 00:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2022-11-26 00:49:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2022-11-26 00:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-26 00:49:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-26 00:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-26 00:49:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-26 00:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-26 00:49:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-26 00:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-26 00:49:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-26 00:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-26 00:49:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-26 00:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2022-11-26 00:49:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2022-11-26 00:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-26 00:49:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-26 00:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2022-11-26 00:49:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2022-11-26 00:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-26 00:49:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-26 00:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-26 00:49:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-26 00:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-26 00:49:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-26 00:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-26 00:49:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-26 00:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2022-11-26 00:49:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2022-11-26 00:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2022-11-26 00:49:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2022-11-26 00:49:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:49:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-26 00:49:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-26 00:49:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2022-11-26 00:49:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2022-11-26 00:49:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-26 00:49:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-26 00:49:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-26 00:49:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-26 00:49:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:49:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:49:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-26 00:49:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-26 00:49:09,839 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:49:09,841 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:49:10,372 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-26 00:50:04,327 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-26 00:50:05,772 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:50:07,817 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:50:07,818 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:50:07,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:50:07 BoogieIcfgContainer [2022-11-26 00:50:07,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:50:07,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:50:07,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:50:07,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:50:07,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:49:05" (1/3) ... [2022-11-26 00:50:07,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ece0bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:50:07, skipping insertion in model container [2022-11-26 00:50:07,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:49:08" (2/3) ... [2022-11-26 00:50:07,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ece0bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:50:07, skipping insertion in model container [2022-11-26 00:50:07,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:50:07" (3/3) ... [2022-11-26 00:50:07,834 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2022-11-26 00:50:07,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:50:07,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-26 00:50:07,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:50:07,929 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;@7fed7cb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:50:07,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-26 00:50:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) [2022-11-26 00:50:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-26 00:50:07,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:07,956 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:07,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:50:07,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:07,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1971069095, now seen corresponding path program 1 times [2022-11-26 00:50:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:07,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995266106] [2022-11-26 00:50:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:07,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-26 00:50:09,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:09,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995266106] [2022-11-26 00:50:09,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995266106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:09,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:09,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:09,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927411531] [2022-11-26 00:50:09,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:09,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:09,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:09,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:09,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:09,566 INFO L87 Difference]: Start difference. First operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-26 00:50:11,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:50:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:15,519 INFO L93 Difference]: Finished difference Result 3134 states and 4649 transitions. [2022-11-26 00:50:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:15,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2022-11-26 00:50:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:15,555 INFO L225 Difference]: With dead ends: 3134 [2022-11-26 00:50:15,556 INFO L226 Difference]: Without dead ends: 2035 [2022-11-26 00:50:15,569 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 [2022-11-26 00:50:15,573 INFO L413 NwaCegarLoop]: 1676 mSDtfsCounter, 1437 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:15,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2993 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 487 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-26 00:50:15,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-26 00:50:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2016. [2022-11-26 00:50:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1227 states have (on average 1.321923390383048) internal successors, (1622), 1272 states have internal predecessors, (1622), 641 states have call successors, (641), 149 states have call predecessors, (641), 145 states have return successors, (679), 617 states have call predecessors, (679), 637 states have call successors, (679) [2022-11-26 00:50:15,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2942 transitions. [2022-11-26 00:50:15,785 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2942 transitions. Word has length 131 [2022-11-26 00:50:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:15,787 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2942 transitions. [2022-11-26 00:50:15,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-26 00:50:15,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2942 transitions. [2022-11-26 00:50:15,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-26 00:50:15,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:15,799 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:15,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:50:15,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:50:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash -532263976, now seen corresponding path program 1 times [2022-11-26 00:50:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:15,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694677852] [2022-11-26 00:50:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:15,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-26 00:50:16,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:16,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694677852] [2022-11-26 00:50:16,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694677852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:16,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:16,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:16,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812589339] [2022-11-26 00:50:16,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:16,640 INFO L87 Difference]: Start difference. First operand 2016 states and 2942 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-26 00:50:18,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:50:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:23,242 INFO L93 Difference]: Finished difference Result 5915 states and 8631 transitions. [2022-11-26 00:50:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:23,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2022-11-26 00:50:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:23,272 INFO L225 Difference]: With dead ends: 5915 [2022-11-26 00:50:23,272 INFO L226 Difference]: Without dead ends: 3922 [2022-11-26 00:50:23,284 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 [2022-11-26 00:50:23,446 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 1465 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:23,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2913 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-26 00:50:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2022-11-26 00:50:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3918. [2022-11-26 00:50:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 2402 states have (on average 1.3201498751040799) internal successors, (3171), 2484 states have internal predecessors, (3171), 1226 states have call successors, (1226), 294 states have call predecessors, (1226), 287 states have return successors, (1306), 1185 states have call predecessors, (1306), 1222 states have call successors, (1306) [2022-11-26 00:50:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5703 transitions. [2022-11-26 00:50:23,694 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5703 transitions. Word has length 134 [2022-11-26 00:50:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:23,695 INFO L495 AbstractCegarLoop]: Abstraction has 3918 states and 5703 transitions. [2022-11-26 00:50:23,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-26 00:50:23,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5703 transitions. [2022-11-26 00:50:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-26 00:50:23,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:23,699 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:23,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:50:23,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:50:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:23,701 INFO L85 PathProgramCache]: Analyzing trace with hash 355327958, now seen corresponding path program 1 times [2022-11-26 00:50:23,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:23,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634943059] [2022-11-26 00:50:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:23,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-26 00:50:24,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:24,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634943059] [2022-11-26 00:50:24,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634943059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:24,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:24,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:24,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811268862] [2022-11-26 00:50:24,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:24,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:24,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:24,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:24,428 INFO L87 Difference]: Start difference. First operand 3918 states and 5703 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-26 00:50:26,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:50:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:31,377 INFO L93 Difference]: Finished difference Result 11272 states and 16329 transitions. [2022-11-26 00:50:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:31,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-11-26 00:50:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:31,432 INFO L225 Difference]: With dead ends: 11272 [2022-11-26 00:50:31,432 INFO L226 Difference]: Without dead ends: 7377 [2022-11-26 00:50:31,456 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 [2022-11-26 00:50:31,457 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1324 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:31,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 3001 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 586 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-26 00:50:31,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2022-11-26 00:50:32,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 7352. [2022-11-26 00:50:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 4474 states have (on average 1.2988377291014752) internal successors, (5811), 4644 states have internal predecessors, (5811), 2306 states have call successors, (2306), 582 states have call predecessors, (2306), 569 states have return successors, (2406), 2217 states have call predecessors, (2406), 2302 states have call successors, (2406) [2022-11-26 00:50:32,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10523 transitions. [2022-11-26 00:50:32,194 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10523 transitions. Word has length 133 [2022-11-26 00:50:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:32,195 INFO L495 AbstractCegarLoop]: Abstraction has 7352 states and 10523 transitions. [2022-11-26 00:50:32,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-26 00:50:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10523 transitions. [2022-11-26 00:50:32,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-26 00:50:32,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:32,198 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:32,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:50:32,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:50:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:32,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1578939891, now seen corresponding path program 1 times [2022-11-26 00:50:32,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:32,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864835519] [2022-11-26 00:50:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:32,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-26 00:50:33,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:33,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864835519] [2022-11-26 00:50:33,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864835519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:33,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:33,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997750069] [2022-11-26 00:50:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:33,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:33,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:33,016 INFO L87 Difference]: Start difference. First operand 7352 states and 10523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-26 00:50:35,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:50:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:39,592 INFO L93 Difference]: Finished difference Result 17756 states and 25319 transitions. [2022-11-26 00:50:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2022-11-26 00:50:39,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:39,679 INFO L225 Difference]: With dead ends: 17756 [2022-11-26 00:50:39,679 INFO L226 Difference]: Without dead ends: 10427 [2022-11-26 00:50:39,724 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 [2022-11-26 00:50:39,728 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 1418 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:39,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 2926 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 518 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-26 00:50:39,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10427 states. [2022-11-26 00:50:40,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10427 to 10402. [2022-11-26 00:50:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10402 states, 6318 states have (on average 1.2841088952200064) internal successors, (8113), 6566 states have internal predecessors, (8113), 3234 states have call successors, (3234), 866 states have call predecessors, (3234), 847 states have return successors, (3378), 3091 states have call predecessors, (3378), 3230 states have call successors, (3378) [2022-11-26 00:50:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 14725 transitions. [2022-11-26 00:50:40,497 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 14725 transitions. Word has length 134 [2022-11-26 00:50:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:40,498 INFO L495 AbstractCegarLoop]: Abstraction has 10402 states and 14725 transitions. [2022-11-26 00:50:40,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-26 00:50:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 14725 transitions. [2022-11-26 00:50:40,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-26 00:50:40,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:40,502 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:40,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:50:40,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:50:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:40,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1541575248, now seen corresponding path program 1 times [2022-11-26 00:50:40,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:40,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980832020] [2022-11-26 00:50:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:40,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-26 00:50:41,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:41,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980832020] [2022-11-26 00:50:41,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980832020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:41,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:41,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:41,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438906970] [2022-11-26 00:50:41,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:41,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:41,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:41,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:41,208 INFO L87 Difference]: Start difference. First operand 10402 states and 14725 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-26 00:50:43,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:50:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:47,539 INFO L93 Difference]: Finished difference Result 30764 states and 43815 transitions. [2022-11-26 00:50:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:47,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-11-26 00:50:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:47,683 INFO L225 Difference]: With dead ends: 30764 [2022-11-26 00:50:47,683 INFO L226 Difference]: Without dead ends: 20385 [2022-11-26 00:50:47,745 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 [2022-11-26 00:50:47,748 INFO L413 NwaCegarLoop]: 1670 mSDtfsCounter, 1508 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:47,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 2977 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 493 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-26 00:50:47,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20385 states. [2022-11-26 00:50:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20385 to 20344. [2022-11-26 00:50:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20344 states, 12342 states have (on average 1.2820450494247286) internal successors, (15823), 12872 states have internal predecessors, (15823), 6330 states have call successors, (6330), 1718 states have call predecessors, (6330), 1669 states have return successors, (6882), 5997 states have call predecessors, (6882), 6326 states have call successors, (6882) [2022-11-26 00:50:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20344 states to 20344 states and 29035 transitions. [2022-11-26 00:50:49,064 INFO L78 Accepts]: Start accepts. Automaton has 20344 states and 29035 transitions. Word has length 140 [2022-11-26 00:50:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:49,064 INFO L495 AbstractCegarLoop]: Abstraction has 20344 states and 29035 transitions. [2022-11-26 00:50:49,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-26 00:50:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 20344 states and 29035 transitions. [2022-11-26 00:50:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-26 00:50:49,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:49,070 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:49,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:50:49,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:50:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash 300757205, now seen corresponding path program 1 times [2022-11-26 00:50:49,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:49,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252931951] [2022-11-26 00:50:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-26 00:50:49,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:49,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252931951] [2022-11-26 00:50:49,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252931951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:49,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:49,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:49,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297813940] [2022-11-26 00:50:49,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:49,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:49,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:49,874 INFO L87 Difference]: Start difference. First operand 20344 states and 29035 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-26 00:50:51,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:50:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:56,644 INFO L93 Difference]: Finished difference Result 49218 states and 70079 transitions. [2022-11-26 00:50:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:56,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2022-11-26 00:50:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:56,816 INFO L225 Difference]: With dead ends: 49218 [2022-11-26 00:50:56,816 INFO L226 Difference]: Without dead ends: 28897 [2022-11-26 00:50:56,894 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 [2022-11-26 00:50:56,895 INFO L413 NwaCegarLoop]: 1793 mSDtfsCounter, 1433 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:56,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 3085 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 578 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-26 00:50:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28897 states. [2022-11-26 00:50:58,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28897 to 28848. [2022-11-26 00:50:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28848 states, 17558 states have (on average 1.2766260394122337) internal successors, (22415), 18362 states have internal predecessors, (22415), 8866 states have call successors, (8866), 2486 states have call predecessors, (8866), 2421 states have return successors, (9548), 8361 states have call predecessors, (9548), 8862 states have call successors, (9548) [2022-11-26 00:50:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28848 states to 28848 states and 40829 transitions. [2022-11-26 00:50:58,978 INFO L78 Accepts]: Start accepts. Automaton has 28848 states and 40829 transitions. Word has length 153 [2022-11-26 00:50:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:58,979 INFO L495 AbstractCegarLoop]: Abstraction has 28848 states and 40829 transitions. [2022-11-26 00:50:58,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-26 00:50:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 28848 states and 40829 transitions. [2022-11-26 00:50:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-26 00:50:58,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:58,983 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:58,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:50:58,984 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:50:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:58,984 INFO L85 PathProgramCache]: Analyzing trace with hash -560496312, now seen corresponding path program 1 times [2022-11-26 00:50:58,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:58,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306761483] [2022-11-26 00:50:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:58,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-26 00:51:01,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:01,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306761483] [2022-11-26 00:51:01,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306761483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:01,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:01,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:51:01,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435293160] [2022-11-26 00:51:01,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:01,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:51:01,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:51:01,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:51:01,118 INFO L87 Difference]: Start difference. First operand 28848 states and 40829 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 00:51:03,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:51:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:09,132 INFO L93 Difference]: Finished difference Result 28854 states and 40834 transitions. [2022-11-26 00:51:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:51:09,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 178 [2022-11-26 00:51:09,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:09,326 INFO L225 Difference]: With dead ends: 28854 [2022-11-26 00:51:09,326 INFO L226 Difference]: Without dead ends: 28852 [2022-11-26 00:51:09,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:51:09,351 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 1513 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:09,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 3937 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 734 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-26 00:51:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28852 states. [2022-11-26 00:51:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28852 to 28852. [2022-11-26 00:51:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28852 states, 17561 states have (on average 1.2765787825294688) internal successors, (22418), 18365 states have internal predecessors, (22418), 8866 states have call successors, (8866), 2487 states have call predecessors, (8866), 2422 states have return successors, (9548), 8361 states have call predecessors, (9548), 8862 states have call successors, (9548) [2022-11-26 00:51:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28852 states to 28852 states and 40832 transitions. [2022-11-26 00:51:11,797 INFO L78 Accepts]: Start accepts. Automaton has 28852 states and 40832 transitions. Word has length 178 [2022-11-26 00:51:11,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:11,801 INFO L495 AbstractCegarLoop]: Abstraction has 28852 states and 40832 transitions. [2022-11-26 00:51:11,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 00:51:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 28852 states and 40832 transitions. [2022-11-26 00:51:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-26 00:51:11,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:11,806 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:11,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:51:11,807 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:51:11,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:11,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1904804951, now seen corresponding path program 1 times [2022-11-26 00:51:11,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:11,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539512922] [2022-11-26 00:51:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:11,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-26 00:51:14,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:14,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539512922] [2022-11-26 00:51:14,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539512922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:14,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:14,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:51:14,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084014518] [2022-11-26 00:51:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:14,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:51:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:51:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:51:14,124 INFO L87 Difference]: Start difference. First operand 28852 states and 40832 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:51:16,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:51:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:22,095 INFO L93 Difference]: Finished difference Result 28858 states and 40837 transitions. [2022-11-26 00:51:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:51:22,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 184 [2022-11-26 00:51:22,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:22,266 INFO L225 Difference]: With dead ends: 28858 [2022-11-26 00:51:22,267 INFO L226 Difference]: Without dead ends: 28856 [2022-11-26 00:51:22,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:51:22,284 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 1508 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:22,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 3940 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 734 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-26 00:51:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28856 states. [2022-11-26 00:51:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28856 to 28856. [2022-11-26 00:51:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28856 states, 17564 states have (on average 1.2765315417900251) internal successors, (22421), 18368 states have internal predecessors, (22421), 8866 states have call successors, (8866), 2488 states have call predecessors, (8866), 2423 states have return successors, (9548), 8361 states have call predecessors, (9548), 8862 states have call successors, (9548) [2022-11-26 00:51:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28856 states to 28856 states and 40835 transitions. [2022-11-26 00:51:24,639 INFO L78 Accepts]: Start accepts. Automaton has 28856 states and 40835 transitions. Word has length 184 [2022-11-26 00:51:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:24,642 INFO L495 AbstractCegarLoop]: Abstraction has 28856 states and 40835 transitions. [2022-11-26 00:51:24,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:51:24,643 INFO L276 IsEmpty]: Start isEmpty. Operand 28856 states and 40835 transitions. [2022-11-26 00:51:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-26 00:51:24,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:24,649 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:24,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:51:24,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:51:24,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:24,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1493603305, now seen corresponding path program 1 times [2022-11-26 00:51:24,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:24,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127188631] [2022-11-26 00:51:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:24,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2022-11-26 00:51:26,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:26,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127188631] [2022-11-26 00:51:26,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127188631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:26,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:26,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:51:26,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242204637] [2022-11-26 00:51:26,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:26,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:51:26,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:26,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:51:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:51:26,795 INFO L87 Difference]: Start difference. First operand 28856 states and 40835 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 00:51:28,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:51:35,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:35,629 INFO L93 Difference]: Finished difference Result 32314 states and 44610 transitions. [2022-11-26 00:51:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:51:35,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 187 [2022-11-26 00:51:35,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:35,791 INFO L225 Difference]: With dead ends: 32314 [2022-11-26 00:51:35,792 INFO L226 Difference]: Without dead ends: 32310 [2022-11-26 00:51:35,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:51:35,811 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 1105 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:35,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 4576 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 820 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-26 00:51:35,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32310 states. [2022-11-26 00:51:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32310 to 32310. [2022-11-26 00:51:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32310 states, 19404 states have (on average 1.2634508348794062) internal successors, (24516), 20239 states have internal predecessors, (24516), 9704 states have call successors, (9704), 3279 states have call predecessors, (9704), 3199 states have return successors, (10386), 9185 states have call predecessors, (10386), 9700 states have call successors, (10386) [2022-11-26 00:51:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32310 states to 32310 states and 44606 transitions. [2022-11-26 00:51:38,237 INFO L78 Accepts]: Start accepts. Automaton has 32310 states and 44606 transitions. Word has length 187 [2022-11-26 00:51:38,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:38,237 INFO L495 AbstractCegarLoop]: Abstraction has 32310 states and 44606 transitions. [2022-11-26 00:51:38,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 00:51:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 32310 states and 44606 transitions. [2022-11-26 00:51:38,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-26 00:51:38,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:38,243 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:38,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:51:38,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:51:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1533971287, now seen corresponding path program 1 times [2022-11-26 00:51:38,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:38,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221170232] [2022-11-26 00:51:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:38,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-26 00:51:40,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:40,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221170232] [2022-11-26 00:51:40,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221170232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:40,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:40,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:51:40,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237850536] [2022-11-26 00:51:40,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:40,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:51:40,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:40,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:51:40,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:51:40,567 INFO L87 Difference]: Start difference. First operand 32310 states and 44606 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-26 00:51:42,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:51:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:49,696 INFO L93 Difference]: Finished difference Result 32310 states and 44606 transitions. [2022-11-26 00:51:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:51:49,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 194 [2022-11-26 00:51:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:49,938 INFO L225 Difference]: With dead ends: 32310 [2022-11-26 00:51:49,938 INFO L226 Difference]: Without dead ends: 31999 [2022-11-26 00:51:49,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:51:49,955 INFO L413 NwaCegarLoop]: 1315 mSDtfsCounter, 1504 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:49,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 3937 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 729 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-26 00:51:49,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31999 states. [2022-11-26 00:51:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31999 to 31999. [2022-11-26 00:51:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31999 states, 19328 states have (on average 1.2595198675496688) internal successors, (24344), 20067 states have internal predecessors, (24344), 9505 states have call successors, (9505), 3242 states have call predecessors, (9505), 3164 states have return successors, (10191), 9083 states have call predecessors, (10191), 9505 states have call successors, (10191) [2022-11-26 00:51:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31999 states to 31999 states and 44040 transitions. [2022-11-26 00:51:51,946 INFO L78 Accepts]: Start accepts. Automaton has 31999 states and 44040 transitions. Word has length 194 [2022-11-26 00:51:51,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:51,947 INFO L495 AbstractCegarLoop]: Abstraction has 31999 states and 44040 transitions. [2022-11-26 00:51:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-26 00:51:51,948 INFO L276 IsEmpty]: Start isEmpty. Operand 31999 states and 44040 transitions. [2022-11-26 00:51:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-26 00:51:51,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:51,954 INFO L195 NwaCegarLoop]: trace histogram [16, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:51,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:51:51,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:51:51,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:51,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2038481330, now seen corresponding path program 1 times [2022-11-26 00:51:51,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:51,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933403348] [2022-11-26 00:51:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:51,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-26 00:51:53,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933403348] [2022-11-26 00:51:53,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933403348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:51:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29793194] [2022-11-26 00:51:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:53,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:53,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:51:53,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:51:53,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:51:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:55,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 3550 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:51:55,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:51:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-11-26 00:51:55,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:51:55,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29793194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:55,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:51:55,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-26 00:51:55,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572291841] [2022-11-26 00:51:55,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:51:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:51:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:51:55,778 INFO L87 Difference]: Start difference. First operand 31999 states and 44040 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 00:51:57,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:52:04,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:52:04,580 INFO L93 Difference]: Finished difference Result 75711 states and 104490 transitions. [2022-11-26 00:52:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:52:04,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 195 [2022-11-26 00:52:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:52:04,812 INFO L225 Difference]: With dead ends: 75711 [2022-11-26 00:52:04,812 INFO L226 Difference]: Without dead ends: 45997 [2022-11-26 00:52:04,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:52:04,929 INFO L413 NwaCegarLoop]: 1835 mSDtfsCounter, 1407 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:52:04,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 3084 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 549 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-26 00:52:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45997 states. [2022-11-26 00:52:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45997 to 45961. [2022-11-26 00:52:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45961 states, 27790 states have (on average 1.260561353004678) internal successors, (35031), 28862 states have internal predecessors, (35031), 13603 states have call successors, (13603), 4678 states have call predecessors, (13603), 4566 states have return successors, (14611), 12978 states have call predecessors, (14611), 13603 states have call successors, (14611) [2022-11-26 00:52:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45961 states to 45961 states and 63245 transitions. [2022-11-26 00:52:07,795 INFO L78 Accepts]: Start accepts. Automaton has 45961 states and 63245 transitions. Word has length 195 [2022-11-26 00:52:07,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:52:07,796 INFO L495 AbstractCegarLoop]: Abstraction has 45961 states and 63245 transitions. [2022-11-26 00:52:07,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 00:52:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 45961 states and 63245 transitions. [2022-11-26 00:52:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-26 00:52:07,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:07,804 INFO L195 NwaCegarLoop]: trace histogram [17, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:52:07,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:52:08,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2750ae9e-05ce-4bb7-a7b7-d4fdf279911c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:52:08,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:52:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1273986720, now seen corresponding path program 1 times [2022-11-26 00:52:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:08,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014384308] [2022-11-26 00:52:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:08,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:52:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2022-11-26 00:52:08,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:52:08,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014384308] [2022-11-26 00:52:08,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014384308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:52:08,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:52:08,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:52:08,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743052439] [2022-11-26 00:52:08,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:52:08,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:52:08,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:52:08,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:52:08,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:52:08,822 INFO L87 Difference]: Start difference. First operand 45961 states and 63245 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-26 00:52:10,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:52:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:52:20,752 INFO L93 Difference]: Finished difference Result 110253 states and 152017 transitions. [2022-11-26 00:52:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:52:20,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 213 [2022-11-26 00:52:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:52:21,234 INFO L225 Difference]: With dead ends: 110253 [2022-11-26 00:52:21,235 INFO L226 Difference]: Without dead ends: 66577 [2022-11-26 00:52:21,366 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 [2022-11-26 00:52:21,367 INFO L413 NwaCegarLoop]: 2464 mSDtfsCounter, 1400 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:52:21,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 3724 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 736 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-26 00:52:21,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66577 states.