./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-spinlock_drivers-net-ethernet-packetengines-hamachi.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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/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 141cc550f279b59aa80e553b6a405c5654c50ab0a30e94ad7616006c63d0c81e --- 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 [2022-11-25 23:49:58,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:49:58,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:49:58,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:49:58,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:49:58,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:49:58,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:49:58,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:49:58,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:49:58,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:49:58,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:49:58,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:49:58,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:49:58,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:49:58,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:49:58,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:49:58,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:49:58,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:49:58,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:49:58,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:49:58,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:49:58,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:49:58,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:49:58,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:49:58,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:49:58,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:49:58,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:49:58,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:49:58,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:49:58,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:49:58,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:49:58,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:49:58,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:49:58,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:49:58,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:49:58,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:49:58,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:49:58,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:49:58,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:49:58,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:49:58,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:49:58,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:49:58,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:49:58,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:49:58,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:49:58,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:49:58,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:49:58,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:49:58,893 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:49:58,893 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:49:58,894 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:49:58,894 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:49:58,895 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:49:58,896 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:49:58,896 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:49:58,896 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:49:58,897 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:49:58,897 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:49:58,897 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:49:58,897 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:49:58,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:49:58,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:49:58,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:49:58,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:49:58,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:49:58,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:49:58,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:49:58,901 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:49:58,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:49:58,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:49:58,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:49:58,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:49:58,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:49:58,903 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:49:58,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:49:58,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:49:58,904 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:49:58,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:49:58,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:49:58,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:49:58,905 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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 141cc550f279b59aa80e553b6a405c5654c50ab0a30e94ad7616006c63d0c81e [2022-11-25 23:49:59,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:49:59,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:49:59,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:49:59,231 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:49:59,232 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:49:59,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i [2022-11-25 23:50:02,368 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:50:03,029 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:50:03,029 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i [2022-11-25 23:50:03,086 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/data/41bb013b9/38738eb8720c444dadaa73e8e0b18297/FLAG638692552 [2022-11-25 23:50:03,101 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/data/41bb013b9/38738eb8720c444dadaa73e8e0b18297 [2022-11-25 23:50:03,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:50:03,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:50:03,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:50:03,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:50:03,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:50:03,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:50:03" (1/1) ... [2022-11-25 23:50:03,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508b98b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:03, skipping insertion in model container [2022-11-25 23:50:03,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:50:03" (1/1) ... [2022-11-25 23:50:03,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:50:03,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:50:04,182 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 23:50:04,198 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irq [2022-11-25 23:50:04,214 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 23:50:04,229 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irq [2022-11-25 23:50:04,340 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-11-25 23:50:04,492 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 23:50:04,501 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 23:50:04,501 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-25 23:50:04,513 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-25 23:50:04,525 WARN L623 FunctionHandler]: Unknown extern function debug_dma_sync_single_for_cpu [2022-11-25 23:50:04,542 WARN L623 FunctionHandler]: Unknown extern function debug_dma_sync_single_for_device [2022-11-25 23:50:04,583 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-11-25 23:50:04,596 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:50:04,601 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-11-25 23:50:04,645 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-25 23:50:04,651 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-25 23:50:04,723 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-25 23:50:04,724 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-25 23:50:04,745 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:50:04,746 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:04,771 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-11-25 23:50:04,902 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-25 23:50:05,053 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-11-25 23:50:05,060 WARN L623 FunctionHandler]: Unknown extern function pci_set_master [2022-11-25 23:50:05,061 WARN L623 FunctionHandler]: Unknown extern function pci_request_regions [2022-11-25 23:50:05,073 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 23:50:05,089 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:50:05,091 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:50:05,102 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,103 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,105 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,114 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-25 23:50:05,114 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-11-25 23:50:05,121 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,148 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,150 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,151 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,152 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,153 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,158 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-25 23:50:05,160 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-25 23:50:05,165 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:05,169 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,171 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,172 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-25 23:50:05,175 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,176 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,176 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,181 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,181 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,182 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,184 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,191 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:05,191 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:50:05,193 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:05,250 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,263 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,265 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,270 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,287 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,290 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,292 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,293 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,293 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,294 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,303 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,306 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,308 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 23:50:05,310 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 23:50:05,311 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 23:50:05,312 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-25 23:50:05,317 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 23:50:05,345 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,352 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,354 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,355 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,358 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:05,360 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:05,381 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 23:50:05,387 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 23:50:05,387 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 23:50:05,392 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_gset [2022-11-25 23:50:05,396 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_sset [2022-11-25 23:50:05,406 WARN L623 FunctionHandler]: Unknown extern function mii_nway_restart [2022-11-25 23:50:05,411 WARN L623 FunctionHandler]: Unknown extern function mii_link_ok [2022-11-25 23:50:05,413 WARN L623 FunctionHandler]: Unknown extern function capable [2022-11-25 23:50:05,415 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,416 WARN L623 FunctionHandler]: Unknown extern function generic_mii_ioctl [2022-11-25 23:50:05,422 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-25 23:50:05,422 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-11-25 23:50:05,428 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:05,723 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-25 23:50:05,724 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-11-25 23:50:05,725 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-25 23:50:05,729 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 23:50:05,732 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-25 23:50:05,733 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-25 23:50:05,742 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-11-25 23:50:05,744 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-11-25 23:50:05,754 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-25 23:50:05,754 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-25 23:50:05,756 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-25 23:50:05,757 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-25 23:50:05,757 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 23:50:05,759 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-25 23:50:05,759 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 23:50:05,760 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 23:50:05,760 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 23:50:05,761 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-11-25 23:50:05,761 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-11-25 23:50:05,806 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-25 23:50:05,806 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-25 23:50:05,814 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-25 23:50:06,256 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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322818,322831] [2022-11-25 23:50:06,260 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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322987,323000] [2022-11-25 23:50:06,262 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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323154,323167] [2022-11-25 23:50:06,262 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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323322,323335] [2022-11-25 23:50:06,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:50:06,331 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:50:06,444 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 23:50:06,445 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irq [2022-11-25 23:50:06,445 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 23:50:06,453 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irq [2022-11-25 23:50:06,455 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-11-25 23:50:06,461 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 23:50:06,464 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 23:50:06,465 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-25 23:50:06,468 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-25 23:50:06,469 WARN L623 FunctionHandler]: Unknown extern function debug_dma_sync_single_for_cpu [2022-11-25 23:50:06,470 WARN L623 FunctionHandler]: Unknown extern function debug_dma_sync_single_for_device [2022-11-25 23:50:06,473 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-11-25 23:50:06,480 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:50:06,481 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-11-25 23:50:06,483 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-25 23:50:06,484 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-25 23:50:06,486 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-25 23:50:06,486 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-25 23:50:06,487 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:50:06,487 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,488 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-11-25 23:50:06,492 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-25 23:50:06,498 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-11-25 23:50:06,498 WARN L623 FunctionHandler]: Unknown extern function pci_set_master [2022-11-25 23:50:06,498 WARN L623 FunctionHandler]: Unknown extern function pci_request_regions [2022-11-25 23:50:06,504 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 23:50:06,513 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:50:06,516 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:50:06,524 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,526 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,527 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,529 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-25 23:50:06,530 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-11-25 23:50:06,541 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,545 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,548 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,553 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,553 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,554 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,555 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-25 23:50:06,555 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-25 23:50:06,561 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:06,563 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,564 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,565 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-25 23:50:06,566 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,569 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,569 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,570 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,570 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,573 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,575 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,578 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:06,578 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:50:06,579 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:06,585 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,588 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,590 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,593 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,594 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,596 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,597 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,598 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,598 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,599 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,600 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,603 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,604 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 23:50:06,606 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 23:50:06,607 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 23:50:06,608 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-25 23:50:06,610 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 23:50:06,615 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,616 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,618 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,618 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,620 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:06,621 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:50:06,628 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 23:50:06,628 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 23:50:06,629 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-25 23:50:06,630 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_gset [2022-11-25 23:50:06,631 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_sset [2022-11-25 23:50:06,631 WARN L623 FunctionHandler]: Unknown extern function mii_nway_restart [2022-11-25 23:50:06,631 WARN L623 FunctionHandler]: Unknown extern function mii_link_ok [2022-11-25 23:50:06,633 WARN L623 FunctionHandler]: Unknown extern function capable [2022-11-25 23:50:06,634 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,635 WARN L623 FunctionHandler]: Unknown extern function generic_mii_ioctl [2022-11-25 23:50:06,636 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-25 23:50:06,636 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-11-25 23:50:06,637 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:50:06,644 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-25 23:50:06,645 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-11-25 23:50:06,646 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-25 23:50:06,651 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 23:50:06,653 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-25 23:50:06,653 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-25 23:50:06,661 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-11-25 23:50:06,713 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-11-25 23:50:06,731 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-25 23:50:06,733 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-25 23:50:06,740 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-25 23:50:06,740 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-25 23:50:06,741 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 23:50:06,742 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-25 23:50:06,744 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 23:50:06,745 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 23:50:06,745 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 23:50:06,746 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-11-25 23:50:06,746 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-11-25 23:50:06,749 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-25 23:50:06,749 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-25 23:50:06,749 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-25 23:50:06,769 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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322818,322831] [2022-11-25 23:50:06,769 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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322987,323000] [2022-11-25 23:50:06,770 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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323154,323167] [2022-11-25 23:50:06,770 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_4150c4df-f2ed-468f-89d8-890d0fc44d9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323322,323335] [2022-11-25 23:50:06,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:50:07,013 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:50:07,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07 WrapperNode [2022-11-25 23:50:07,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:50:07,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:50:07,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:50:07,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:50:07,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,279 INFO L138 Inliner]: procedures = 412, calls = 1858, calls flagged for inlining = 207, calls inlined = 191, statements flattened = 4675 [2022-11-25 23:50:07,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:50:07,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:50:07,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:50:07,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:50:07,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,498 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:50:07,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:50:07,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:50:07,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:50:07,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (1/1) ... [2022-11-25 23:50:07,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:50:07,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:50:07,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:50:07,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:50:07,635 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2022-11-25 23:50:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2022-11-25 23:50:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-25 23:50:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-25 23:50:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-25 23:50:07,636 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-25 23:50:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-25 23:50:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-25 23:50:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-25 23:50:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-25 23:50:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_close [2022-11-25 23:50:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_close [2022-11-25 23:50:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 23:50:07,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 23:50:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-11-25 23:50:07,638 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-11-25 23:50:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-25 23:50:07,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-25 23:50:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-25 23:50:07,639 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-25 23:50:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hamachi_private [2022-11-25 23:50:07,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hamachi_private [2022-11-25 23:50:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-25 23:50:07,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-25 23:50:07,639 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-25 23:50:07,640 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-25 23:50:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-25 23:50:07,640 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-25 23:50:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-25 23:50:07,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-25 23:50:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-25 23:50:07,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-25 23:50:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:50:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-25 23:50:07,641 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-25 23:50:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-25 23:50:07,641 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-25 23:50:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 23:50:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-25 23:50:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-25 23:50:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:50:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-25 23:50:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-25 23:50:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:50:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-25 23:50:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-25 23:50:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-25 23:50:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-25 23:50:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-25 23:50:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-25 23:50:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-25 23:50:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-25 23:50:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-25 23:50:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-25 23:50:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-25 23:50:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-25 23:50:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-25 23:50:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-25 23:50:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-25 23:50:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-25 23:50:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:50:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-25 23:50:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-25 23:50:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-25 23:50:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-25 23:50:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-25 23:50:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-25 23:50:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:50:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-25 23:50:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-25 23:50:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-25 23:50:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-25 23:50:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:50:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-25 23:50:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-25 23:50:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-25 23:50:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-25 23:50:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_hamachi_private [2022-11-25 23:50:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_hamachi_private [2022-11-25 23:50:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-25 23:50:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-25 23:50:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-25 23:50:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-25 23:50:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-25 23:50:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-25 23:50:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-25 23:50:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-25 23:50:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-25 23:50:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-25 23:50:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-25 23:50:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-25 23:50:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-25 23:50:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-25 23:50:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_nway_reset [2022-11-25 23:50:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_nway_reset [2022-11-25 23:50:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-25 23:50:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-25 23:50:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:50:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:50:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 23:50:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 23:50:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-25 23:50:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-25 23:50:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-25 23:50:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-25 23:50:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_hamachi_exit_15_2 [2022-11-25 23:50:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_hamachi_exit_15_2 [2022-11-25 23:50:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-25 23:50:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-25 23:50:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-25 23:50:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-25 23:50:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_open [2022-11-25 23:50:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_open [2022-11-25 23:50:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-25 23:50:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-25 23:50:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-25 23:50:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-25 23:50:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-25 23:50:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-25 23:50:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:50:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-25 23:50:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-25 23:50:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:50:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-25 23:50:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-25 23:50:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:50:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-25 23:50:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-25 23:50:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-25 23:50:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-25 23:50:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-25 23:50:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-25 23:50:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_68 [2022-11-25 23:50:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_68 [2022-11-25 23:50:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-25 23:50:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-25 23:50:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-25 23:50:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-25 23:50:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-25 23:50:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-25 23:50:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-25 23:50:07,656 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-25 23:50:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_remove_one [2022-11-25 23:50:07,656 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_remove_one [2022-11-25 23:50:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:50:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-25 23:50:07,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-25 23:50:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_69 [2022-11-25 23:50:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_69 [2022-11-25 23:50:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_get_stats [2022-11-25 23:50:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_get_stats [2022-11-25 23:50:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_tx_timeout [2022-11-25 23:50:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_tx_timeout [2022-11-25 23:50:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-25 23:50:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-25 23:50:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-25 23:50:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-25 23:50:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-25 23:50:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-25 23:50:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:50:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_timer [2022-11-25 23:50:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_timer [2022-11-25 23:50:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-25 23:50:07,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-25 23:50:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-25 23:50:07,659 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-25 23:50:08,526 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:50:08,529 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:50:08,735 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-25 23:50:11,791 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-25 23:50:11,896 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:50:13,298 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:50:13,298 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:50:13,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:50:13 BoogieIcfgContainer [2022-11-25 23:50:13,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:50:13,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:50:13,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:50:13,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:50:13,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:50:03" (1/3) ... [2022-11-25 23:50:13,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682b6ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:50:13, skipping insertion in model container [2022-11-25 23:50:13,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:07" (2/3) ... [2022-11-25 23:50:13,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682b6ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:50:13, skipping insertion in model container [2022-11-25 23:50:13,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:50:13" (3/3) ... [2022-11-25 23:50:13,315 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i [2022-11-25 23:50:13,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:50:13,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-25 23:50:13,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:50:13,429 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;@359951bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:50:13,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-25 23:50:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 1131 states, 657 states have (on average 1.3287671232876712) internal successors, (873), 684 states have internal predecessors, (873), 397 states have call successors, (397), 75 states have call predecessors, (397), 74 states have return successors, (390), 377 states have call predecessors, (390), 390 states have call successors, (390) [2022-11-25 23:50:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 23:50:13,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:13,467 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:13,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:50:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1207438580, now seen corresponding path program 1 times [2022-11-25 23:50:13,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:13,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7033459] [2022-11-25 23:50:13,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:13,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-25 23:50:14,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:14,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7033459] [2022-11-25 23:50:14,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7033459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:14,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:14,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370393807] [2022-11-25 23:50:14,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:14,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:14,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:14,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:14,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:14,338 INFO L87 Difference]: Start difference. First operand has 1131 states, 657 states have (on average 1.3287671232876712) internal successors, (873), 684 states have internal predecessors, (873), 397 states have call successors, (397), 75 states have call predecessors, (397), 74 states have return successors, (390), 377 states have call predecessors, (390), 390 states have call successors, (390) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-11-25 23:50:18,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:50:18,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:18,181 INFO L93 Difference]: Finished difference Result 3213 states and 4751 transitions. [2022-11-25 23:50:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 115 [2022-11-25 23:50:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:18,269 INFO L225 Difference]: With dead ends: 3213 [2022-11-25 23:50:18,282 INFO L226 Difference]: Without dead ends: 2090 [2022-11-25 23:50:18,315 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 [2022-11-25 23:50:18,318 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1439 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:18,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 3105 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-25 23:50:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-11-25 23:50:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2085. [2022-11-25 23:50:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1228 states have (on average 1.3200325732899023) internal successors, (1621), 1280 states have internal predecessors, (1621), 711 states have call successors, (711), 144 states have call predecessors, (711), 143 states have return successors, (707), 681 states have call predecessors, (707), 707 states have call successors, (707) [2022-11-25 23:50:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3039 transitions. [2022-11-25 23:50:18,670 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3039 transitions. Word has length 115 [2022-11-25 23:50:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:18,671 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3039 transitions. [2022-11-25 23:50:18,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-11-25 23:50:18,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3039 transitions. [2022-11-25 23:50:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 23:50:18,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:18,682 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:18,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:50:18,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:50:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1475219602, now seen corresponding path program 1 times [2022-11-25 23:50:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:18,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55220943] [2022-11-25 23:50:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-25 23:50:19,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:19,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55220943] [2022-11-25 23:50:19,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55220943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:19,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:19,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:19,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216810061] [2022-11-25 23:50:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:19,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:19,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:19,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:19,190 INFO L87 Difference]: Start difference. First operand 2085 states and 3039 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 23:50:22,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:50:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:22,831 INFO L93 Difference]: Finished difference Result 5802 states and 8445 transitions. [2022-11-25 23:50:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:22,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-11-25 23:50:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:22,868 INFO L225 Difference]: With dead ends: 5802 [2022-11-25 23:50:22,868 INFO L226 Difference]: Without dead ends: 3736 [2022-11-25 23:50:22,884 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 [2022-11-25 23:50:22,885 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1277 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:22,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 3095 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 490 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 23:50:22,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-11-25 23:50:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3706. [2022-11-25 23:50:23,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 2177 states have (on average 1.3201653651814425) internal successors, (2874), 2274 states have internal predecessors, (2874), 1252 states have call successors, (1252), 277 states have call predecessors, (1252), 274 states have return successors, (1264), 1189 states have call predecessors, (1264), 1248 states have call successors, (1264) [2022-11-25 23:50:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 5390 transitions. [2022-11-25 23:50:23,199 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 5390 transitions. Word has length 113 [2022-11-25 23:50:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:23,202 INFO L495 AbstractCegarLoop]: Abstraction has 3706 states and 5390 transitions. [2022-11-25 23:50:23,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 23:50:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 5390 transitions. [2022-11-25 23:50:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-25 23:50:23,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:23,213 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:23,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:50:23,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:50:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1761583995, now seen corresponding path program 1 times [2022-11-25 23:50:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:23,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944470069] [2022-11-25 23:50:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:23,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-25 23:50:23,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:23,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944470069] [2022-11-25 23:50:23,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944470069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:23,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:23,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394009044] [2022-11-25 23:50:23,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:23,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:23,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:23,569 INFO L87 Difference]: Start difference. First operand 3706 states and 5390 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 23:50:26,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:50:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:27,331 INFO L93 Difference]: Finished difference Result 8656 states and 12545 transitions. [2022-11-25 23:50:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:27,332 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-11-25 23:50:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:27,367 INFO L225 Difference]: With dead ends: 8656 [2022-11-25 23:50:27,367 INFO L226 Difference]: Without dead ends: 4969 [2022-11-25 23:50:27,385 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 [2022-11-25 23:50:27,390 INFO L413 NwaCegarLoop]: 1705 mSDtfsCounter, 1284 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:27,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 3058 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 515 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 23:50:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2022-11-25 23:50:27,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 4942. [2022-11-25 23:50:27,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 2868 states have (on average 1.3057880055788005) internal successors, (3745), 3007 states have internal predecessors, (3745), 1680 states have call successors, (1680), 395 states have call predecessors, (1680), 391 states have return successors, (1703), 1586 states have call predecessors, (1703), 1676 states have call successors, (1703) [2022-11-25 23:50:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 7128 transitions. [2022-11-25 23:50:27,791 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 7128 transitions. Word has length 117 [2022-11-25 23:50:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:27,794 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 7128 transitions. [2022-11-25 23:50:27,795 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 23:50:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 7128 transitions. [2022-11-25 23:50:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-25 23:50:27,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:27,801 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:27,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:50:27,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:50:27,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash -503401245, now seen corresponding path program 1 times [2022-11-25 23:50:27,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:27,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680501417] [2022-11-25 23:50:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:27,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-25 23:50:28,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:28,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680501417] [2022-11-25 23:50:28,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680501417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:28,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:28,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:50:28,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92387748] [2022-11-25 23:50:28,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:28,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:28,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:28,528 INFO L87 Difference]: Start difference. First operand 4942 states and 7128 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 23:50:32,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:50:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:33,290 INFO L93 Difference]: Finished difference Result 6541 states and 9406 transitions. [2022-11-25 23:50:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:50:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2022-11-25 23:50:33,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:33,342 INFO L225 Difference]: With dead ends: 6541 [2022-11-25 23:50:33,343 INFO L226 Difference]: Without dead ends: 6539 [2022-11-25 23:50:33,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:50:33,353 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1270 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 6438 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:33,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 6438 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 23:50:33,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2022-11-25 23:50:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6532. [2022-11-25 23:50:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6532 states, 3776 states have (on average 1.30323093220339) internal successors, (4921), 3961 states have internal predecessors, (4921), 2226 states have call successors, (2226), 533 states have call predecessors, (2226), 527 states have return successors, (2253), 2099 states have call predecessors, (2253), 2218 states have call successors, (2253) [2022-11-25 23:50:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 9400 transitions. [2022-11-25 23:50:33,869 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 9400 transitions. Word has length 159 [2022-11-25 23:50:33,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:33,870 INFO L495 AbstractCegarLoop]: Abstraction has 6532 states and 9400 transitions. [2022-11-25 23:50:33,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 23:50:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 9400 transitions. [2022-11-25 23:50:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-25 23:50:33,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:33,877 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:33,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:50:33,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:50:33,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:33,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1073996928, now seen corresponding path program 1 times [2022-11-25 23:50:33,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:33,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851457923] [2022-11-25 23:50:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:33,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-11-25 23:50:34,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:34,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851457923] [2022-11-25 23:50:34,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851457923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:34,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:34,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:50:34,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841758918] [2022-11-25 23:50:34,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:34,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:34,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:34,442 INFO L87 Difference]: Start difference. First operand 6532 states and 9400 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 23:50:37,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:50:39,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:39,023 INFO L93 Difference]: Finished difference Result 6545 states and 9409 transitions. [2022-11-25 23:50:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:50:39,024 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 163 [2022-11-25 23:50:39,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:39,063 INFO L225 Difference]: With dead ends: 6545 [2022-11-25 23:50:39,063 INFO L226 Difference]: Without dead ends: 6543 [2022-11-25 23:50:39,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:50:39,069 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:39,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 23:50:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6543 states. [2022-11-25 23:50:39,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6543 to 6536. [2022-11-25 23:50:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6536 states, 3779 states have (on average 1.3029902090500132) internal successors, (4924), 3964 states have internal predecessors, (4924), 2226 states have call successors, (2226), 534 states have call predecessors, (2226), 528 states have return successors, (2253), 2099 states have call predecessors, (2253), 2218 states have call successors, (2253) [2022-11-25 23:50:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 9403 transitions. [2022-11-25 23:50:39,530 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 9403 transitions. Word has length 163 [2022-11-25 23:50:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:39,531 INFO L495 AbstractCegarLoop]: Abstraction has 6536 states and 9403 transitions. [2022-11-25 23:50:39,531 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 23:50:39,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 9403 transitions. [2022-11-25 23:50:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 23:50:39,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:39,539 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-25 23:50:39,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:50:39,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:50:39,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1852786671, now seen corresponding path program 1 times [2022-11-25 23:50:39,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:39,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788355534] [2022-11-25 23:50:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:39,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2022-11-25 23:50:40,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:40,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788355534] [2022-11-25 23:50:40,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788355534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:40,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:40,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:50:40,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465499870] [2022-11-25 23:50:40,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:40,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:40,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:40,075 INFO L87 Difference]: Start difference. First operand 6536 states and 9403 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 23:50:43,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:50:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:44,888 INFO L93 Difference]: Finished difference Result 6549 states and 9412 transitions. [2022-11-25 23:50:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:50:44,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 167 [2022-11-25 23:50:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:44,959 INFO L225 Difference]: With dead ends: 6549 [2022-11-25 23:50:44,960 INFO L226 Difference]: Without dead ends: 6547 [2022-11-25 23:50:44,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:50:44,966 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1266 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:44,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 23:50:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6547 states. [2022-11-25 23:50:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6547 to 6540. [2022-11-25 23:50:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6540 states, 3782 states have (on average 1.3027498677948175) internal successors, (4927), 3967 states have internal predecessors, (4927), 2226 states have call successors, (2226), 535 states have call predecessors, (2226), 529 states have return successors, (2253), 2099 states have call predecessors, (2253), 2218 states have call successors, (2253) [2022-11-25 23:50:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6540 states to 6540 states and 9406 transitions. [2022-11-25 23:50:45,395 INFO L78 Accepts]: Start accepts. Automaton has 6540 states and 9406 transitions. Word has length 167 [2022-11-25 23:50:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:45,396 INFO L495 AbstractCegarLoop]: Abstraction has 6540 states and 9406 transitions. [2022-11-25 23:50:45,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 23:50:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6540 states and 9406 transitions. [2022-11-25 23:50:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-25 23:50:45,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:45,403 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 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] [2022-11-25 23:50:45,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:50:45,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:50:45,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:45,404 INFO L85 PathProgramCache]: Analyzing trace with hash 525433568, now seen corresponding path program 1 times [2022-11-25 23:50:45,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:45,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067057425] [2022-11-25 23:50:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:45,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-11-25 23:50:45,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:45,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067057425] [2022-11-25 23:50:45,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067057425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:45,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:45,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034166899] [2022-11-25 23:50:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:45,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:45,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:45,781 INFO L87 Difference]: Start difference. First operand 6540 states and 9406 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-25 23:50:49,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:50:49,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:49,823 INFO L93 Difference]: Finished difference Result 14262 states and 20500 transitions. [2022-11-25 23:50:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:49,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 164 [2022-11-25 23:50:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:49,862 INFO L225 Difference]: With dead ends: 14262 [2022-11-25 23:50:49,862 INFO L226 Difference]: Without dead ends: 7759 [2022-11-25 23:50:49,889 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 [2022-11-25 23:50:49,889 INFO L413 NwaCegarLoop]: 2009 mSDtfsCounter, 972 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:49,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 3361 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 658 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 23:50:49,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7759 states. [2022-11-25 23:50:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7759 to 7695. [2022-11-25 23:50:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7695 states, 4591 states have (on average 1.3014593770420388) internal successors, (5975), 4788 states have internal predecessors, (5975), 2481 states have call successors, (2481), 631 states have call predecessors, (2481), 620 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-11-25 23:50:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7695 states to 7695 states and 10956 transitions. [2022-11-25 23:50:50,438 INFO L78 Accepts]: Start accepts. Automaton has 7695 states and 10956 transitions. Word has length 164 [2022-11-25 23:50:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:50,442 INFO L495 AbstractCegarLoop]: Abstraction has 7695 states and 10956 transitions. [2022-11-25 23:50:50,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-25 23:50:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7695 states and 10956 transitions. [2022-11-25 23:50:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-25 23:50:50,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:50,447 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 3, 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] [2022-11-25 23:50:50,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:50:50,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:50:50,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:50,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1456392918, now seen corresponding path program 1 times [2022-11-25 23:50:50,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:50,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601254106] [2022-11-25 23:50:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:50,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2022-11-25 23:50:50,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:50,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601254106] [2022-11-25 23:50:50,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601254106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:50,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:50,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:50:50,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739745869] [2022-11-25 23:50:50,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:50,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:50,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:50,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:50,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:50,930 INFO L87 Difference]: Start difference. First operand 7695 states and 10956 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 23:50:54,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:50:55,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:55,340 INFO L93 Difference]: Finished difference Result 7708 states and 10965 transitions. [2022-11-25 23:50:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:50:55,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 172 [2022-11-25 23:50:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:55,377 INFO L225 Difference]: With dead ends: 7708 [2022-11-25 23:50:55,377 INFO L226 Difference]: Without dead ends: 7706 [2022-11-25 23:50:55,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:50:55,383 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1266 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:55,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 23:50:55,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-11-25 23:50:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 7699. [2022-11-25 23:50:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7699 states, 4594 states have (on average 1.3012625163256422) internal successors, (5978), 4791 states have internal predecessors, (5978), 2481 states have call successors, (2481), 632 states have call predecessors, (2481), 621 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-11-25 23:50:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 10959 transitions. [2022-11-25 23:50:55,808 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 10959 transitions. Word has length 172 [2022-11-25 23:50:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:55,809 INFO L495 AbstractCegarLoop]: Abstraction has 7699 states and 10959 transitions. [2022-11-25 23:50:55,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 23:50:55,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 10959 transitions. [2022-11-25 23:50:55,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 23:50:55,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:55,814 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 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] [2022-11-25 23:50:55,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:50:55,814 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:50:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2097546275, now seen corresponding path program 1 times [2022-11-25 23:50:55,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:55,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187203134] [2022-11-25 23:50:55,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-25 23:50:56,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:56,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187203134] [2022-11-25 23:50:56,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187203134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:56,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:56,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:50:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149196743] [2022-11-25 23:50:56,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:56,404 INFO L87 Difference]: Start difference. First operand 7699 states and 10959 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 23:50:59,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:00,896 INFO L93 Difference]: Finished difference Result 7712 states and 10968 transitions. [2022-11-25 23:51:00,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:51:00,898 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 179 [2022-11-25 23:51:00,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:00,932 INFO L225 Difference]: With dead ends: 7712 [2022-11-25 23:51:00,933 INFO L226 Difference]: Without dead ends: 7710 [2022-11-25 23:51:00,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:51:00,939 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:00,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 23:51:00,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2022-11-25 23:51:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 7703. [2022-11-25 23:51:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7703 states, 4597 states have (on average 1.3010659125516641) internal successors, (5981), 4794 states have internal predecessors, (5981), 2481 states have call successors, (2481), 633 states have call predecessors, (2481), 622 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-11-25 23:51:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7703 states to 7703 states and 10962 transitions. [2022-11-25 23:51:01,482 INFO L78 Accepts]: Start accepts. Automaton has 7703 states and 10962 transitions. Word has length 179 [2022-11-25 23:51:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:01,482 INFO L495 AbstractCegarLoop]: Abstraction has 7703 states and 10962 transitions. [2022-11-25 23:51:01,483 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 23:51:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 7703 states and 10962 transitions. [2022-11-25 23:51:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-25 23:51:01,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:01,492 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 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, 1, 1, 1] [2022-11-25 23:51:01,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:51:01,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:01,493 INFO L85 PathProgramCache]: Analyzing trace with hash 426158656, now seen corresponding path program 1 times [2022-11-25 23:51:01,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:01,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608300997] [2022-11-25 23:51:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:01,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2022-11-25 23:51:01,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:01,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608300997] [2022-11-25 23:51:01,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608300997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:01,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:01,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:51:01,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402309811] [2022-11-25 23:51:01,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:01,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:51:01,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:01,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:51:01,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:51:01,966 INFO L87 Difference]: Start difference. First operand 7703 states and 10962 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, (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) [2022-11-25 23:51:05,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:06,612 INFO L93 Difference]: Finished difference Result 7716 states and 10971 transitions. [2022-11-25 23:51:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:51:06,613 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, (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 183 [2022-11-25 23:51:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:06,645 INFO L225 Difference]: With dead ends: 7716 [2022-11-25 23:51:06,645 INFO L226 Difference]: Without dead ends: 7714 [2022-11-25 23:51:06,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:51:06,650 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:06,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 23:51:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7714 states. [2022-11-25 23:51:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 7707. [2022-11-25 23:51:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 4600 states have (on average 1.3008695652173914) internal successors, (5984), 4797 states have internal predecessors, (5984), 2481 states have call successors, (2481), 634 states have call predecessors, (2481), 623 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-11-25 23:51:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 10965 transitions. [2022-11-25 23:51:07,142 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 10965 transitions. Word has length 183 [2022-11-25 23:51:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:07,143 INFO L495 AbstractCegarLoop]: Abstraction has 7707 states and 10965 transitions. [2022-11-25 23:51:07,144 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, (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) [2022-11-25 23:51:07,144 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 10965 transitions. [2022-11-25 23:51:07,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-25 23:51:07,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:07,149 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 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, 1, 1, 1, 1, 1] [2022-11-25 23:51:07,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:51:07,150 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:07,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:07,150 INFO L85 PathProgramCache]: Analyzing trace with hash 102163641, now seen corresponding path program 1 times [2022-11-25 23:51:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:07,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834271631] [2022-11-25 23:51:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:07,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-11-25 23:51:07,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:07,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834271631] [2022-11-25 23:51:07,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834271631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:07,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:07,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:51:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269575750] [2022-11-25 23:51:07,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:07,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:51:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:51:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:51:07,664 INFO L87 Difference]: Start difference. First operand 7707 states and 10965 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:51:11,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:12,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:12,157 INFO L93 Difference]: Finished difference Result 12264 states and 17449 transitions. [2022-11-25 23:51:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:51:12,159 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 188 [2022-11-25 23:51:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:12,216 INFO L225 Difference]: With dead ends: 12264 [2022-11-25 23:51:12,217 INFO L226 Difference]: Without dead ends: 12262 [2022-11-25 23:51:12,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:51:12,226 INFO L413 NwaCegarLoop]: 1820 mSDtfsCounter, 1251 mSDsluCounter, 4980 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 6800 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:12,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 6800 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1127 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 23:51:12,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12262 states. [2022-11-25 23:51:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12262 to 12251. [2022-11-25 23:51:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12251 states, 7289 states have (on average 1.3042941418575937) internal successors, (9507), 7617 states have internal predecessors, (9507), 3948 states have call successors, (3948), 1039 states have call predecessors, (3948), 1011 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-25 23:51:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12251 states to 12251 states and 17437 transitions. [2022-11-25 23:51:13,158 INFO L78 Accepts]: Start accepts. Automaton has 12251 states and 17437 transitions. Word has length 188 [2022-11-25 23:51:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:13,159 INFO L495 AbstractCegarLoop]: Abstraction has 12251 states and 17437 transitions. [2022-11-25 23:51:13,159 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:51:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 12251 states and 17437 transitions. [2022-11-25 23:51:13,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-25 23:51:13,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:13,165 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:13,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:51:13,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:13,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1326605728, now seen corresponding path program 1 times [2022-11-25 23:51:13,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:13,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278280874] [2022-11-25 23:51:13,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:13,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-11-25 23:51:13,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:13,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278280874] [2022-11-25 23:51:13,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278280874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:13,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:13,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:51:13,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858104682] [2022-11-25 23:51:13,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:13,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:51:13,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:13,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:51:13,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:51:13,655 INFO L87 Difference]: Start difference. First operand 12251 states and 17437 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-25 23:51:16,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:18,020 INFO L93 Difference]: Finished difference Result 12264 states and 17446 transitions. [2022-11-25 23:51:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:51:18,021 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 193 [2022-11-25 23:51:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:18,073 INFO L225 Difference]: With dead ends: 12264 [2022-11-25 23:51:18,073 INFO L226 Difference]: Without dead ends: 12262 [2022-11-25 23:51:18,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:51:18,082 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:18,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 23:51:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12262 states. [2022-11-25 23:51:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12262 to 12255. [2022-11-25 23:51:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12255 states, 7292 states have (on average 1.3041689522764675) internal successors, (9510), 7620 states have internal predecessors, (9510), 3948 states have call successors, (3948), 1040 states have call predecessors, (3948), 1012 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-25 23:51:18,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12255 states to 12255 states and 17440 transitions. [2022-11-25 23:51:18,902 INFO L78 Accepts]: Start accepts. Automaton has 12255 states and 17440 transitions. Word has length 193 [2022-11-25 23:51:18,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:18,903 INFO L495 AbstractCegarLoop]: Abstraction has 12255 states and 17440 transitions. [2022-11-25 23:51:18,903 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-25 23:51:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 12255 states and 17440 transitions. [2022-11-25 23:51:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-25 23:51:18,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:18,909 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:18,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:51:18,909 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:18,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:18,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1637053657, now seen corresponding path program 1 times [2022-11-25 23:51:18,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:18,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626057372] [2022-11-25 23:51:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:18,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2022-11-25 23:51:19,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:19,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626057372] [2022-11-25 23:51:19,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626057372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:19,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:19,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:51:19,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205793746] [2022-11-25 23:51:19,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:19,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:51:19,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:51:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:51:19,378 INFO L87 Difference]: Start difference. First operand 12255 states and 17440 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 23:51:22,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:24,163 INFO L93 Difference]: Finished difference Result 12268 states and 17449 transitions. [2022-11-25 23:51:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:51:24,164 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 198 [2022-11-25 23:51:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:24,214 INFO L225 Difference]: With dead ends: 12268 [2022-11-25 23:51:24,214 INFO L226 Difference]: Without dead ends: 12266 [2022-11-25 23:51:24,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:51:24,221 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:24,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 23:51:24,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12266 states. [2022-11-25 23:51:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12266 to 12259. [2022-11-25 23:51:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12259 states, 7295 states have (on average 1.304043865661412) internal successors, (9513), 7623 states have internal predecessors, (9513), 3948 states have call successors, (3948), 1041 states have call predecessors, (3948), 1013 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-25 23:51:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12259 states to 12259 states and 17443 transitions. [2022-11-25 23:51:24,829 INFO L78 Accepts]: Start accepts. Automaton has 12259 states and 17443 transitions. Word has length 198 [2022-11-25 23:51:24,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:24,830 INFO L495 AbstractCegarLoop]: Abstraction has 12259 states and 17443 transitions. [2022-11-25 23:51:24,830 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 23:51:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 12259 states and 17443 transitions. [2022-11-25 23:51:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-25 23:51:24,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:24,837 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:51:24,837 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash 451660234, now seen corresponding path program 1 times [2022-11-25 23:51:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:24,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555504591] [2022-11-25 23:51:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2022-11-25 23:51:25,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:25,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555504591] [2022-11-25 23:51:25,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555504591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:25,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:25,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:51:25,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431295569] [2022-11-25 23:51:25,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:25,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:51:25,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:51:25,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:51:25,479 INFO L87 Difference]: Start difference. First operand 12259 states and 17443 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-25 23:51:29,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:30,175 INFO L93 Difference]: Finished difference Result 12272 states and 17452 transitions. [2022-11-25 23:51:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:51:30,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 202 [2022-11-25 23:51:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:30,230 INFO L225 Difference]: With dead ends: 12272 [2022-11-25 23:51:30,230 INFO L226 Difference]: Without dead ends: 12270 [2022-11-25 23:51:30,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:51:30,240 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1266 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:30,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 23:51:30,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12270 states. [2022-11-25 23:51:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12270 to 12263. [2022-11-25 23:51:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12263 states, 7298 states have (on average 1.3039188818854481) internal successors, (9516), 7626 states have internal predecessors, (9516), 3948 states have call successors, (3948), 1042 states have call predecessors, (3948), 1014 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-25 23:51:30,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12263 states to 12263 states and 17446 transitions. [2022-11-25 23:51:30,890 INFO L78 Accepts]: Start accepts. Automaton has 12263 states and 17446 transitions. Word has length 202 [2022-11-25 23:51:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:30,891 INFO L495 AbstractCegarLoop]: Abstraction has 12263 states and 17446 transitions. [2022-11-25 23:51:30,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-25 23:51:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 12263 states and 17446 transitions. [2022-11-25 23:51:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-25 23:51:30,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:30,898 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:30,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:51:30,899 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:30,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash -173798151, now seen corresponding path program 1 times [2022-11-25 23:51:30,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:30,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577535724] [2022-11-25 23:51:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2022-11-25 23:51:31,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577535724] [2022-11-25 23:51:31,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577535724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:31,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:31,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:51:31,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15538796] [2022-11-25 23:51:31,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:31,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:51:31,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:31,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:51:31,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:51:31,319 INFO L87 Difference]: Start difference. First operand 12263 states and 17446 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-25 23:51:34,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:35,940 INFO L93 Difference]: Finished difference Result 12276 states and 17455 transitions. [2022-11-25 23:51:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:51:35,941 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 208 [2022-11-25 23:51:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:35,976 INFO L225 Difference]: With dead ends: 12276 [2022-11-25 23:51:35,976 INFO L226 Difference]: Without dead ends: 12272 [2022-11-25 23:51:35,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:51:35,983 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:35,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 23:51:35,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12272 states. [2022-11-25 23:51:36,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12272 to 12265. [2022-11-25 23:51:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12265 states, 7300 states have (on average 1.3036986301369864) internal successors, (9517), 7627 states have internal predecessors, (9517), 3948 states have call successors, (3948), 1043 states have call predecessors, (3948), 1014 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-11-25 23:51:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12265 states to 12265 states and 17447 transitions. [2022-11-25 23:51:36,539 INFO L78 Accepts]: Start accepts. Automaton has 12265 states and 17447 transitions. Word has length 208 [2022-11-25 23:51:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:36,540 INFO L495 AbstractCegarLoop]: Abstraction has 12265 states and 17447 transitions. [2022-11-25 23:51:36,540 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-25 23:51:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 12265 states and 17447 transitions. [2022-11-25 23:51:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-25 23:51:36,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:36,546 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 11, 11, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:36,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:51:36,546 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash 673743018, now seen corresponding path program 1 times [2022-11-25 23:51:36,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:36,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915355908] [2022-11-25 23:51:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:36,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2022-11-25 23:51:37,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:37,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915355908] [2022-11-25 23:51:37,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915355908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:37,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:37,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:51:37,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496740698] [2022-11-25 23:51:37,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:37,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:51:37,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:51:37,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:51:37,106 INFO L87 Difference]: Start difference. First operand 12265 states and 17447 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-25 23:51:40,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:41,786 INFO L93 Difference]: Finished difference Result 12272 states and 17451 transitions. [2022-11-25 23:51:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:51:41,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 212 [2022-11-25 23:51:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:41,836 INFO L225 Difference]: With dead ends: 12272 [2022-11-25 23:51:41,836 INFO L226 Difference]: Without dead ends: 12177 [2022-11-25 23:51:41,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:51:41,844 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1262 mSDsluCounter, 4744 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 6443 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:41,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 6443 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 982 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 23:51:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12177 states. [2022-11-25 23:51:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12177 to 12172. [2022-11-25 23:51:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12172 states, 7259 states have (on average 1.3037608486017358) internal successors, (9464), 7575 states have internal predecessors, (9464), 3909 states have call successors, (3909), 1026 states have call predecessors, (3909), 1001 states have return successors, (3947), 3661 states have call predecessors, (3947), 3901 states have call successors, (3947) [2022-11-25 23:51:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12172 states to 12172 states and 17320 transitions. [2022-11-25 23:51:42,846 INFO L78 Accepts]: Start accepts. Automaton has 12172 states and 17320 transitions. Word has length 212 [2022-11-25 23:51:42,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:42,847 INFO L495 AbstractCegarLoop]: Abstraction has 12172 states and 17320 transitions. [2022-11-25 23:51:42,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-25 23:51:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 12172 states and 17320 transitions. [2022-11-25 23:51:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-25 23:51:42,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:42,854 INFO L195 NwaCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:42,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 23:51:42,854 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:42,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:42,855 INFO L85 PathProgramCache]: Analyzing trace with hash 144127841, now seen corresponding path program 1 times [2022-11-25 23:51:42,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:42,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356932272] [2022-11-25 23:51:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:42,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2022-11-25 23:51:43,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356932272] [2022-11-25 23:51:43,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356932272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:43,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:43,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:51:43,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124364314] [2022-11-25 23:51:43,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:51:43,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:51:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:51:43,130 INFO L87 Difference]: Start difference. First operand 12172 states and 17320 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-25 23:51:46,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:47,258 INFO L93 Difference]: Finished difference Result 28132 states and 40065 transitions. [2022-11-25 23:51:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:51:47,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 213 [2022-11-25 23:51:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:47,304 INFO L225 Difference]: With dead ends: 28132 [2022-11-25 23:51:47,304 INFO L226 Difference]: Without dead ends: 16137 [2022-11-25 23:51:47,345 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 [2022-11-25 23:51:47,346 INFO L413 NwaCegarLoop]: 2174 mSDtfsCounter, 976 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:47,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 3524 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 693 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 23:51:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16137 states. [2022-11-25 23:51:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16137 to 16075. [2022-11-25 23:51:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16075 states, 9706 states have (on average 1.302287245003091) internal successors, (12640), 10104 states have internal predecessors, (12640), 5037 states have call successors, (5037), 1367 states have call predecessors, (5037), 1329 states have return successors, (5075), 4712 states have call predecessors, (5075), 5029 states have call successors, (5075) [2022-11-25 23:51:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16075 states to 16075 states and 22752 transitions. [2022-11-25 23:51:48,336 INFO L78 Accepts]: Start accepts. Automaton has 16075 states and 22752 transitions. Word has length 213 [2022-11-25 23:51:48,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:48,337 INFO L495 AbstractCegarLoop]: Abstraction has 16075 states and 22752 transitions. [2022-11-25 23:51:48,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-25 23:51:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 16075 states and 22752 transitions. [2022-11-25 23:51:48,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-25 23:51:48,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:48,344 INFO L195 NwaCegarLoop]: trace histogram [17, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:48,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 23:51:48,345 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash 389713892, now seen corresponding path program 1 times [2022-11-25 23:51:48,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:48,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999752849] [2022-11-25 23:51:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:48,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2022-11-25 23:51:49,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:49,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999752849] [2022-11-25 23:51:49,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999752849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:49,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:49,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:51:49,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968781602] [2022-11-25 23:51:49,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:49,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:51:49,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:49,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:51:49,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:51:49,044 INFO L87 Difference]: Start difference. First operand 16075 states and 22752 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-25 23:51:52,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:53,571 INFO L93 Difference]: Finished difference Result 16089 states and 22764 transitions. [2022-11-25 23:51:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:51:53,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 276 [2022-11-25 23:51:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:53,713 INFO L225 Difference]: With dead ends: 16089 [2022-11-25 23:51:53,713 INFO L226 Difference]: Without dead ends: 16087 [2022-11-25 23:51:53,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:51:53,718 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 1222 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 6895 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:53,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 6895 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1122 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 23:51:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16087 states. [2022-11-25 23:51:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16087 to 16075. [2022-11-25 23:51:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16075 states, 9706 states have (on average 1.3010508963527714) internal successors, (12628), 10104 states have internal predecessors, (12628), 5037 states have call successors, (5037), 1367 states have call predecessors, (5037), 1329 states have return successors, (5075), 4712 states have call predecessors, (5075), 5029 states have call successors, (5075) [2022-11-25 23:51:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16075 states to 16075 states and 22740 transitions. [2022-11-25 23:51:54,519 INFO L78 Accepts]: Start accepts. Automaton has 16075 states and 22740 transitions. Word has length 276 [2022-11-25 23:51:54,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:54,520 INFO L495 AbstractCegarLoop]: Abstraction has 16075 states and 22740 transitions. [2022-11-25 23:51:54,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-25 23:51:54,521 INFO L276 IsEmpty]: Start isEmpty. Operand 16075 states and 22740 transitions. [2022-11-25 23:51:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-25 23:51:54,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:54,529 INFO L195 NwaCegarLoop]: trace histogram [17, 11, 11, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:54,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 23:51:54,530 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:51:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:54,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1925712644, now seen corresponding path program 1 times [2022-11-25 23:51:54,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:54,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576398218] [2022-11-25 23:51:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:54,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2022-11-25 23:51:55,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:55,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576398218] [2022-11-25 23:51:55,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576398218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:55,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:55,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:51:55,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111122650] [2022-11-25 23:51:55,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:55,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:51:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:51:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:51:55,211 INFO L87 Difference]: Start difference. First operand 16075 states and 22740 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-25 23:51:59,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:51:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:59,807 INFO L93 Difference]: Finished difference Result 16484 states and 23163 transitions. [2022-11-25 23:51:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:51:59,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 296 [2022-11-25 23:51:59,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:59,864 INFO L225 Difference]: With dead ends: 16484 [2022-11-25 23:51:59,864 INFO L226 Difference]: Without dead ends: 16482 [2022-11-25 23:51:59,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:51:59,874 INFO L413 NwaCegarLoop]: 1451 mSDtfsCounter, 331 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 5543 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:59,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 5543 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1017 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 23:51:59,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16482 states. [2022-11-25 23:52:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16482 to 16482. [2022-11-25 23:52:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16482 states, 9922 states have (on average 1.2944970772021769) internal successors, (12844), 10323 states have internal predecessors, (12844), 5134 states have call successors, (5134), 1462 states have call predecessors, (5134), 1424 states have return successors, (5172), 4809 states have call predecessors, (5172), 5126 states have call successors, (5172) [2022-11-25 23:52:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16482 states to 16482 states and 23150 transitions. [2022-11-25 23:52:00,845 INFO L78 Accepts]: Start accepts. Automaton has 16482 states and 23150 transitions. Word has length 296 [2022-11-25 23:52:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:52:00,845 INFO L495 AbstractCegarLoop]: Abstraction has 16482 states and 23150 transitions. [2022-11-25 23:52:00,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-25 23:52:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 16482 states and 23150 transitions. [2022-11-25 23:52:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-25 23:52:00,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:00,864 INFO L195 NwaCegarLoop]: trace histogram [21, 15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:52:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 23:52:00,864 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:52:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:00,865 INFO L85 PathProgramCache]: Analyzing trace with hash -649685408, now seen corresponding path program 1 times [2022-11-25 23:52:00,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:00,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349347499] [2022-11-25 23:52:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:00,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1132 trivial. 0 not checked. [2022-11-25 23:52:01,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:01,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349347499] [2022-11-25 23:52:01,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349347499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:52:01,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:52:01,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:52:01,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547846132] [2022-11-25 23:52:01,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:52:01,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:52:01,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:52:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:52:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:52:01,490 INFO L87 Difference]: Start difference. First operand 16482 states and 23150 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-25 23:52:04,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:52:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:52:05,866 INFO L93 Difference]: Finished difference Result 39839 states and 57335 transitions. [2022-11-25 23:52:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:52:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 404 [2022-11-25 23:52:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:52:05,941 INFO L225 Difference]: With dead ends: 39839 [2022-11-25 23:52:05,941 INFO L226 Difference]: Without dead ends: 23534 [2022-11-25 23:52:05,985 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 [2022-11-25 23:52:05,986 INFO L413 NwaCegarLoop]: 1968 mSDtfsCounter, 417 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:52:05,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 3478 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 599 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-25 23:52:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23534 states. [2022-11-25 23:52:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23534 to 16492. [2022-11-25 23:52:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16492 states, 9932 states have (on average 1.2942005638340717) internal successors, (12854), 10333 states have internal predecessors, (12854), 5134 states have call successors, (5134), 1462 states have call predecessors, (5134), 1424 states have return successors, (5172), 4809 states have call predecessors, (5172), 5126 states have call successors, (5172) [2022-11-25 23:52:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16492 states to 16492 states and 23160 transitions. [2022-11-25 23:52:06,945 INFO L78 Accepts]: Start accepts. Automaton has 16492 states and 23160 transitions. Word has length 404 [2022-11-25 23:52:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:52:06,946 INFO L495 AbstractCegarLoop]: Abstraction has 16492 states and 23160 transitions. [2022-11-25 23:52:06,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-25 23:52:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 16492 states and 23160 transitions. [2022-11-25 23:52:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-25 23:52:06,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:06,964 INFO L195 NwaCegarLoop]: trace histogram [21, 15, 15, 11, 11, 11, 11, 11, 11, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:52:06,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 23:52:06,965 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 23:52:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1559669060, now seen corresponding path program 1 times [2022-11-25 23:52:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:06,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215248427] [2022-11-25 23:52:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:06,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2022-11-25 23:52:07,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:07,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215248427] [2022-11-25 23:52:07,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215248427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:52:07,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259379375] [2022-11-25 23:52:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:07,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:52:07,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:52:07,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:52:07,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150c4df-f2ed-468f-89d8-890d0fc44d9b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:52:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:09,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 4456 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:52:09,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:52:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 315 proven. 1 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-25 23:52:09,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:52:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2022-11-25 23:52:10,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259379375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:52:10,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1373143673] [2022-11-25 23:52:10,134 INFO L159 IcfgInterpreter]: Started Sifa with 211 locations of interest [2022-11-25 23:52:10,134 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:52:10,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:52:10,152 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:52:10,152 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs