./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh --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 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e --- 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-2329fc7 [2022-12-14 10:43:09,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:43:09,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:43:09,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:43:09,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:43:09,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:43:09,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:43:09,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:43:09,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:43:09,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:43:09,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:43:09,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:43:09,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:43:09,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:43:09,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:43:09,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:43:09,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:43:09,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:43:09,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:43:09,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:43:09,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:43:09,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:43:09,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:43:09,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:43:09,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:43:09,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:43:09,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:43:09,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:43:09,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:43:09,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:43:09,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:43:09,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:43:09,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:43:09,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:43:09,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:43:09,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:43:09,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:43:09,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:43:09,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:43:09,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:43:09,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:43:09,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 10:43:09,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:43:09,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:43:09,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:43:09,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:43:09,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:43:09,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:43:09,472 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:43:09,472 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:43:09,472 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:43:09,477 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:43:09,477 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:43:09,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:43:09,478 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:43:09,478 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:43:09,478 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:43:09,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:43:09,479 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:43:09,479 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:43:09,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:43:09,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:43:09,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:43:09,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:43:09,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:43:09,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:43:09,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:43:09,481 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:43:09,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:43:09,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:43:09,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:43:09,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:43:09,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:43:09,482 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:43:09,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:43:09,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:43:09,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:43:09,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:43:09,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:43:09,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:43:09,484 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_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e [2022-12-14 10:43:09,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:43:09,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:43:09,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:43:09,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:43:09,675 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:43:09,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-12-14 10:43:12,310 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:43:12,669 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:43:12,670 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-12-14 10:43:12,695 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/data/69bf95229/6b795c8e748444f6959ecbb9f0d4713c/FLAG1683f5f29 [2022-12-14 10:43:12,708 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/data/69bf95229/6b795c8e748444f6959ecbb9f0d4713c [2022-12-14 10:43:12,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:43:12,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:43:12,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:43:12,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:43:12,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:43:12,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:43:12" (1/1) ... [2022-12-14 10:43:12,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aae8456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:12, skipping insertion in model container [2022-12-14 10:43:12,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:43:12" (1/1) ... [2022-12-14 10:43:12,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:43:12,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:43:13,187 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_d8852ef8-8988-435d-b528-5db9883bd5ea/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-12-14 10:43:13,216 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-14 10:43:13,246 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 10:43:13,250 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_bh [2022-12-14 10:43:13,253 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 10:43:13,257 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_bh [2022-12-14 10:43:13,316 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 10:43:13,353 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,353 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 10:43:13,400 WARN L623 FunctionHandler]: Unknown extern function unregister_netdevice_queue [2022-12-14 10:43:13,415 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 10:43:13,416 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 10:43:13,422 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 10:43:13,423 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,473 WARN L623 FunctionHandler]: Unknown extern function slhc_init [2022-12-14 10:43:13,476 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,477 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,478 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,479 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,479 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,480 WARN L623 FunctionHandler]: Unknown extern function slhc_free [2022-12-14 10:43:13,480 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,480 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,487 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,487 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,488 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,488 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,489 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,490 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,491 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,491 WARN L623 FunctionHandler]: Unknown extern function slhc_free [2022-12-14 10:43:13,498 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,500 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,501 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,502 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,505 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,506 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,506 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,518 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,519 WARN L623 FunctionHandler]: Unknown extern function slhc_uncompress [2022-12-14 10:43:13,520 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,522 WARN L623 FunctionHandler]: Unknown extern function slhc_remember [2022-12-14 10:43:13,523 WARN L623 FunctionHandler]: Unknown extern function dev_alloc_skb [2022-12-14 10:43:13,523 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,525 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 10:43:13,525 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 10:43:13,530 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,531 WARN L623 FunctionHandler]: Unknown extern function slhc_compress [2022-12-14 10:43:13,546 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-12-14 10:43:13,546 WARN L623 FunctionHandler]: Unknown extern function tty_chars_in_buffer [2022-12-14 10:43:13,547 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,551 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,551 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:43:13,552 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:43:13,553 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:43:13,576 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 10:43:13,590 WARN L623 FunctionHandler]: Unknown extern function dev_close [2022-12-14 10:43:13,595 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 10:43:13,596 WARN L623 FunctionHandler]: Unknown extern function alloc_netdev_mqs [2022-12-14 10:43:13,597 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 10:43:13,600 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 10:43:13,601 WARN L623 FunctionHandler]: Unknown extern function rtnl_lock [2022-12-14 10:43:13,602 WARN L623 FunctionHandler]: Unknown extern function tty_devnum [2022-12-14 10:43:13,602 WARN L623 FunctionHandler]: Unknown extern function tty_devnum [2022-12-14 10:43:13,604 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:43:13,605 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:43:13,605 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-12-14 10:43:13,606 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-12-14 10:43:13,612 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:43:13,631 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,632 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,633 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,635 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,636 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,638 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,639 WARN L623 FunctionHandler]: Unknown extern function tty_mode_ioctl [2022-12-14 10:43:13,651 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,652 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,652 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,653 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,653 WARN L623 FunctionHandler]: Unknown extern function tty_register_ldisc [2022-12-14 10:43:13,653 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,654 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,657 WARN L623 FunctionHandler]: Unknown extern function msleep_interruptible [2022-12-14 10:43:13,658 WARN L623 FunctionHandler]: Unknown extern function tty_hangup [2022-12-14 10:43:13,659 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,660 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:43:13,660 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,661 WARN L623 FunctionHandler]: Unknown extern function tty_unregister_ldisc [2022-12-14 10:43:13,661 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,665 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,666 WARN L623 FunctionHandler]: Unknown extern function tty_hangup [2022-12-14 10:43:13,679 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 10:43:13,686 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-12-14 10:43:13,687 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:43:13,688 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,689 WARN L623 FunctionHandler]: Unknown extern function register_netdevice [2022-12-14 10:43:13,689 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:43:13,690 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:43:13,690 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,691 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,691 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,692 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,692 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,693 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,693 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,694 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,694 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,695 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,695 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,697 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 10:43:13,698 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 10:43:13,701 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 10:43:13,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:43:13,721 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:43:13,783 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_d8852ef8-8988-435d-b528-5db9883bd5ea/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-12-14 10:43:13,784 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-14 10:43:13,785 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 10:43:13,786 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_bh [2022-12-14 10:43:13,786 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 10:43:13,786 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_bh [2022-12-14 10:43:13,787 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 10:43:13,788 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,788 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 10:43:13,790 WARN L623 FunctionHandler]: Unknown extern function unregister_netdevice_queue [2022-12-14 10:43:13,791 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 10:43:13,791 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 10:43:13,792 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 10:43:13,793 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,795 WARN L623 FunctionHandler]: Unknown extern function slhc_init [2022-12-14 10:43:13,796 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,797 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,798 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,798 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,799 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,799 WARN L623 FunctionHandler]: Unknown extern function slhc_free [2022-12-14 10:43:13,799 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,799 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,800 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,801 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,801 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,801 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,802 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,802 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,803 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,803 WARN L623 FunctionHandler]: Unknown extern function slhc_free [2022-12-14 10:43:13,804 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,805 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,806 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,806 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:43:13,808 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,808 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,808 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,809 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,810 WARN L623 FunctionHandler]: Unknown extern function slhc_uncompress [2022-12-14 10:43:13,811 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,811 WARN L623 FunctionHandler]: Unknown extern function slhc_remember [2022-12-14 10:43:13,812 WARN L623 FunctionHandler]: Unknown extern function dev_alloc_skb [2022-12-14 10:43:13,812 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,815 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 10:43:13,816 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 10:43:13,817 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,817 WARN L623 FunctionHandler]: Unknown extern function slhc_compress [2022-12-14 10:43:13,844 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-12-14 10:43:13,845 WARN L623 FunctionHandler]: Unknown extern function tty_chars_in_buffer [2022-12-14 10:43:13,845 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,847 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,847 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:43:13,848 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:43:13,849 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:43:13,855 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 10:43:13,864 WARN L623 FunctionHandler]: Unknown extern function dev_close [2022-12-14 10:43:13,866 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 10:43:13,867 WARN L623 FunctionHandler]: Unknown extern function alloc_netdev_mqs [2022-12-14 10:43:13,868 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 10:43:13,869 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 10:43:13,870 WARN L623 FunctionHandler]: Unknown extern function rtnl_lock [2022-12-14 10:43:13,871 WARN L623 FunctionHandler]: Unknown extern function tty_devnum [2022-12-14 10:43:13,871 WARN L623 FunctionHandler]: Unknown extern function tty_devnum [2022-12-14 10:43:13,873 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:43:13,874 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:43:13,874 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-12-14 10:43:13,875 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-12-14 10:43:13,876 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:43:13,891 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,892 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,893 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,894 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,895 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,896 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 10:43:13,896 WARN L623 FunctionHandler]: Unknown extern function tty_mode_ioctl [2022-12-14 10:43:13,901 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,901 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,902 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,902 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,902 WARN L623 FunctionHandler]: Unknown extern function tty_register_ldisc [2022-12-14 10:43:13,902 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,903 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,903 WARN L623 FunctionHandler]: Unknown extern function msleep_interruptible [2022-12-14 10:43:13,904 WARN L623 FunctionHandler]: Unknown extern function tty_hangup [2022-12-14 10:43:13,905 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,908 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:43:13,908 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:43:13,909 WARN L623 FunctionHandler]: Unknown extern function tty_unregister_ldisc [2022-12-14 10:43:13,909 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,913 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:43:13,913 WARN L623 FunctionHandler]: Unknown extern function tty_hangup [2022-12-14 10:43:13,917 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 10:43:13,920 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-12-14 10:43:13,921 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:43:13,921 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,922 WARN L623 FunctionHandler]: Unknown extern function register_netdevice [2022-12-14 10:43:13,922 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:43:13,923 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:43:13,923 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,923 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,924 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,924 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,924 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,925 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,925 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,925 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,926 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,926 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 10:43:13,927 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 10:43:13,928 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 10:43:13,928 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 10:43:13,930 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 10:43:13,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:43:13,981 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:43:13,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13 WrapperNode [2022-12-14 10:43:13,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:43:13,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:43:13,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:43:13,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:43:13,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,111 INFO L138 Inliner]: procedures = 184, calls = 828, calls flagged for inlining = 92, calls inlined = 90, statements flattened = 3180 [2022-12-14 10:43:14,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:43:14,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:43:14,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:43:14,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:43:14,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:43:14,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:43:14,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:43:14,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:43:14,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (1/1) ... [2022-12-14 10:43:14,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:43:14,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:43:14,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:43:14,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:43:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-12-14 10:43:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-12-14 10:43:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-12-14 10:43:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-12-14 10:43:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 10:43:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-12-14 10:43:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-12-14 10:43:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-12-14 10:43:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 10:43:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 10:43:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 10:43:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 10:43:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:43:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-12-14 10:43:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-12-14 10:43:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-12-14 10:43:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-12-14 10:43:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-12-14 10:43:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-12-14 10:43:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 10:43:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 10:43:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-12-14 10:43:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-12-14 10:43:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 10:43:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 10:43:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-12-14 10:43:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-12-14 10:43:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-12-14 10:43:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-12-14 10:43:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-14 10:43:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-14 10:43:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-12-14 10:43:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-12-14 10:43:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:43:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-14 10:43:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-14 10:43:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 10:43:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 10:43:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-12-14 10:43:14,270 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-12-14 10:43:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:43:14,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:43:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-12-14 10:43:14,270 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-12-14 10:43:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-12-14 10:43:14,270 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-12-14 10:43:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:43:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-12-14 10:43:14,270 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-12-14 10:43:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-12-14 10:43:14,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-12-14 10:43:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-12-14 10:43:14,270 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-12-14 10:43:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-12-14 10:43:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-12-14 10:43:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-12-14 10:43:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-12-14 10:43:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-12-14 10:43:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-12-14 10:43:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:43:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-12-14 10:43:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-12-14 10:43:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-12-14 10:43:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-12-14 10:43:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-12-14 10:43:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-12-14 10:43:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-12-14 10:43:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-12-14 10:43:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-12-14 10:43:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-12-14 10:43:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:43:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-12-14 10:43:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-12-14 10:43:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:43:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-12-14 10:43:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-12-14 10:43:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-12-14 10:43:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-12-14 10:43:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-12-14 10:43:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-12-14 10:43:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-12-14 10:43:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-12-14 10:43:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-12-14 10:43:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-12-14 10:43:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-12-14 10:43:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-12-14 10:43:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-12-14 10:43:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-12-14 10:43:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-14 10:43:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-14 10:43:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-14 10:43:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-14 10:43:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-12-14 10:43:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-12-14 10:43:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-12-14 10:43:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-12-14 10:43:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-12-14 10:43:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-12-14 10:43:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:43:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-12-14 10:43:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-12-14 10:43:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-12-14 10:43:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-12-14 10:43:14,635 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:43:14,637 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:43:14,819 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 10:43:16,964 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:43:17,652 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:43:17,652 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:43:17,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:43:17 BoogieIcfgContainer [2022-12-14 10:43:17,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:43:17,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:43:17,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:43:17,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:43:17,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:43:12" (1/3) ... [2022-12-14 10:43:17,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44932866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:43:17, skipping insertion in model container [2022-12-14 10:43:17,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:43:13" (2/3) ... [2022-12-14 10:43:17,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44932866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:43:17, skipping insertion in model container [2022-12-14 10:43:17,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:43:17" (3/3) ... [2022-12-14 10:43:17,663 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-12-14 10:43:17,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:43:17,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:43:17,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:43:17,730 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;@3691c4aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:43:17,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:43:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 770 states, 488 states have (on average 1.4057377049180328) internal successors, (686), 521 states have internal predecessors, (686), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-12-14 10:43:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 10:43:17,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:43:17,747 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:43:17,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:43:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:43:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash 619357297, now seen corresponding path program 1 times [2022-12-14 10:43:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:43:17,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401988708] [2022-12-14 10:43:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:43:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:43:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:43:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-14 10:43:18,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:43:18,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401988708] [2022-12-14 10:43:18,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401988708] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:43:18,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:43:18,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:43:18,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569974330] [2022-12-14 10:43:18,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:43:18,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:43:18,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:43:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:43:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:43:18,090 INFO L87 Difference]: Start difference. First operand has 770 states, 488 states have (on average 1.4057377049180328) internal successors, (686), 521 states have internal predecessors, (686), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-14 10:43:20,231 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 [] [2022-12-14 10:43:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:43:20,781 INFO L93 Difference]: Finished difference Result 1966 states and 2884 transitions. [2022-12-14 10:43:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:43:20,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2022-12-14 10:43:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:43:20,802 INFO L225 Difference]: With dead ends: 1966 [2022-12-14 10:43:20,802 INFO L226 Difference]: Without dead ends: 1149 [2022-12-14 10:43:20,808 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 [2022-12-14 10:43:20,811 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 637 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:43:20,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 2085 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 10:43:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-12-14 10:43:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1148. [2022-12-14 10:43:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 727 states have (on average 1.37414030261348) internal successors, (999), 760 states have internal predecessors, (999), 333 states have call successors, (333), 89 states have call predecessors, (333), 87 states have return successors, (332), 328 states have call predecessors, (332), 332 states have call successors, (332) [2022-12-14 10:43:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1664 transitions. [2022-12-14 10:43:20,934 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1664 transitions. Word has length 60 [2022-12-14 10:43:20,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:43:20,935 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1664 transitions. [2022-12-14 10:43:20,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-14 10:43:20,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1664 transitions. [2022-12-14 10:43:20,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 10:43:20,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:43:20,941 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-12-14 10:43:20,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:43:20,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:43:20,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:43:20,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1469228939, now seen corresponding path program 1 times [2022-12-14 10:43:20,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:43:20,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257076719] [2022-12-14 10:43:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:43:20,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:43:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:43:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-14 10:43:21,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:43:21,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257076719] [2022-12-14 10:43:21,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257076719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:43:21,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:43:21,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:43:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858472776] [2022-12-14 10:43:21,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:43:21,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:43:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:43:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:43:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:43:21,076 INFO L87 Difference]: Start difference. First operand 1148 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 10:43:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:43:23,489 INFO L93 Difference]: Finished difference Result 2279 states and 3303 transitions. [2022-12-14 10:43:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:43:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2022-12-14 10:43:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:43:23,495 INFO L225 Difference]: With dead ends: 2279 [2022-12-14 10:43:23,495 INFO L226 Difference]: Without dead ends: 1148 [2022-12-14 10:43:23,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:43:23,499 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 1 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:43:23,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2860 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 10:43:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-12-14 10:43:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1148. [2022-12-14 10:43:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 727 states have (on average 1.3713892709766162) internal successors, (997), 760 states have internal predecessors, (997), 333 states have call successors, (333), 89 states have call predecessors, (333), 87 states have return successors, (332), 328 states have call predecessors, (332), 332 states have call successors, (332) [2022-12-14 10:43:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1662 transitions. [2022-12-14 10:43:23,535 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1662 transitions. Word has length 94 [2022-12-14 10:43:23,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:43:23,535 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1662 transitions. [2022-12-14 10:43:23,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 10:43:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1662 transitions. [2022-12-14 10:43:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 10:43:23,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:43:23,539 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-12-14 10:43:23,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:43:23,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:43:23,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:43:23,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1786313831, now seen corresponding path program 1 times [2022-12-14 10:43:23,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:43:23,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58265163] [2022-12-14 10:43:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:43:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:43:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:43:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-12-14 10:43:23,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:43:23,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58265163] [2022-12-14 10:43:23,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58265163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:43:23,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:43:23,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:43:23,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225235601] [2022-12-14 10:43:23,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:43:23,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:43:23,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:43:23,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:43:23,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:43:23,701 INFO L87 Difference]: Start difference. First operand 1148 states and 1662 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-14 10:43:25,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:43:26,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:43:26,806 INFO L93 Difference]: Finished difference Result 1625 states and 2442 transitions. [2022-12-14 10:43:26,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:43:26,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 96 [2022-12-14 10:43:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:43:26,814 INFO L225 Difference]: With dead ends: 1625 [2022-12-14 10:43:26,814 INFO L226 Difference]: Without dead ends: 1622 [2022-12-14 10:43:26,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:43:26,816 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 607 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:43:26,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3630 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 10:43:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-12-14 10:43:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1150. [2022-12-14 10:43:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 729 states have (on average 1.3703703703703705) internal successors, (999), 762 states have internal predecessors, (999), 333 states have call successors, (333), 89 states have call predecessors, (333), 87 states have return successors, (332), 328 states have call predecessors, (332), 332 states have call successors, (332) [2022-12-14 10:43:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1664 transitions. [2022-12-14 10:43:26,857 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1664 transitions. Word has length 96 [2022-12-14 10:43:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:43:26,857 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1664 transitions. [2022-12-14 10:43:26,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-14 10:43:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1664 transitions. [2022-12-14 10:43:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-14 10:43:26,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:43:26,860 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:43:26,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:43:26,861 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:43:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:43:26,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1364702312, now seen corresponding path program 1 times [2022-12-14 10:43:26,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:43:26,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846870468] [2022-12-14 10:43:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:43:26,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:43:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:43:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-12-14 10:43:27,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:43:27,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846870468] [2022-12-14 10:43:27,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846870468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:43:27,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:43:27,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:43:27,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403122841] [2022-12-14 10:43:27,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:43:27,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:43:27,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:43:27,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:43:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:43:27,058 INFO L87 Difference]: Start difference. First operand 1150 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 10:43:28,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:43:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:43:30,178 INFO L93 Difference]: Finished difference Result 2754 states and 4078 transitions. [2022-12-14 10:43:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:43:30,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-12-14 10:43:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:43:30,188 INFO L225 Difference]: With dead ends: 2754 [2022-12-14 10:43:30,188 INFO L226 Difference]: Without dead ends: 1625 [2022-12-14 10:43:30,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:43:30,191 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 1380 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:43:30,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1713 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 10:43:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2022-12-14 10:43:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1151. [2022-12-14 10:43:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 730 states have (on average 1.36986301369863) internal successors, (1000), 763 states have internal predecessors, (1000), 333 states have call successors, (333), 89 states have call predecessors, (333), 87 states have return successors, (332), 328 states have call predecessors, (332), 332 states have call successors, (332) [2022-12-14 10:43:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1665 transitions. [2022-12-14 10:43:30,252 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1665 transitions. Word has length 104 [2022-12-14 10:43:30,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:43:30,253 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1665 transitions. [2022-12-14 10:43:30,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 10:43:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1665 transitions. [2022-12-14 10:43:30,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-14 10:43:30,256 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:43:30,256 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-12-14 10:43:30,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:43:30,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:43:30,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:43:30,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1528355845, now seen corresponding path program 1 times [2022-12-14 10:43:30,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:43:30,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479696474] [2022-12-14 10:43:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:43:30,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:43:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:43:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-12-14 10:43:30,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:43:30,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479696474] [2022-12-14 10:43:30,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479696474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:43:30,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:43:30,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:43:30,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583781577] [2022-12-14 10:43:30,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:43:30,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:43:30,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:43:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:43:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:43:30,432 INFO L87 Difference]: Start difference. First operand 1151 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:43:34,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:43:34,015 INFO L93 Difference]: Finished difference Result 2429 states and 3755 transitions. [2022-12-14 10:43:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:43:34,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-12-14 10:43:34,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:43:34,026 INFO L225 Difference]: With dead ends: 2429 [2022-12-14 10:43:34,026 INFO L226 Difference]: Without dead ends: 2426 [2022-12-14 10:43:34,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:43:34,027 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 1291 mSDsluCounter, 4192 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:43:34,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 5976 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 10:43:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2022-12-14 10:43:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1153. [2022-12-14 10:43:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 731 states have (on average 1.3693570451436388) internal successors, (1001), 763 states have internal predecessors, (1001), 334 states have call successors, (334), 89 states have call predecessors, (334), 87 states have return successors, (333), 329 states have call predecessors, (333), 333 states have call successors, (333) [2022-12-14 10:43:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1668 transitions. [2022-12-14 10:43:34,087 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1668 transitions. Word has length 105 [2022-12-14 10:43:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:43:34,087 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1668 transitions. [2022-12-14 10:43:34,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 10:43:34,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1668 transitions. [2022-12-14 10:43:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-14 10:43:34,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:43:34,091 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-12-14 10:43:34,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:43:34,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:43:34,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:43:34,092 INFO L85 PathProgramCache]: Analyzing trace with hash 289055515, now seen corresponding path program 1 times [2022-12-14 10:43:34,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:43:34,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404217692] [2022-12-14 10:43:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:43:34,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:43:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:43:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-12-14 10:43:34,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:43:34,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404217692] [2022-12-14 10:43:34,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404217692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:43:34,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:43:34,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:43:34,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115821307] [2022-12-14 10:43:34,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:43:34,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:43:34,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:43:34,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:43:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:43:34,205 INFO L87 Difference]: Start difference. First operand 1153 states and 1668 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 10:43:36,377 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 [] [2022-12-14 10:43:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:43:36,909 INFO L93 Difference]: Finished difference Result 2683 states and 3868 transitions. [2022-12-14 10:43:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:43:36,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2022-12-14 10:43:36,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:43:36,918 INFO L225 Difference]: With dead ends: 2683 [2022-12-14 10:43:36,918 INFO L226 Difference]: Without dead ends: 1551 [2022-12-14 10:43:36,921 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 [2022-12-14 10:43:36,922 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 1027 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:43:36,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1961 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 10:43:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-12-14 10:43:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1549. [2022-12-14 10:43:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 977 states have (on average 1.3623336745138177) internal successors, (1331), 1018 states have internal predecessors, (1331), 448 states have call successors, (448), 126 states have call predecessors, (448), 123 states have return successors, (447), 440 states have call predecessors, (447), 447 states have call successors, (447) [2022-12-14 10:43:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2226 transitions. [2022-12-14 10:43:37,033 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2226 transitions. Word has length 129 [2022-12-14 10:43:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:43:37,033 INFO L495 AbstractCegarLoop]: Abstraction has 1549 states and 2226 transitions. [2022-12-14 10:43:37,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 10:43:37,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2226 transitions. [2022-12-14 10:43:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-14 10:43:37,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:43:37,038 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-12-14 10:43:37,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:43:37,038 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:43:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:43:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1134449483, now seen corresponding path program 1 times [2022-12-14 10:43:37,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:43:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208818091] [2022-12-14 10:43:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:43:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:43:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:43:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-14 10:43:37,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:43:37,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208818091] [2022-12-14 10:43:37,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208818091] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:43:37,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:43:37,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:43:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961765560] [2022-12-14 10:43:37,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:43:37,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:43:37,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:43:37,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:43:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:43:37,216 INFO L87 Difference]: Start difference. First operand 1549 states and 2226 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 10:43:40,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:43:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:43:42,728 INFO L93 Difference]: Finished difference Result 4109 states and 6202 transitions. [2022-12-14 10:43:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:43:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-12-14 10:43:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:43:42,736 INFO L225 Difference]: With dead ends: 4109 [2022-12-14 10:43:42,736 INFO L226 Difference]: Without dead ends: 2977 [2022-12-14 10:43:42,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:43:42,739 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 2508 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:43:42,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 3745 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-14 10:43:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2022-12-14 10:43:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1552. [2022-12-14 10:43:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 980 states have (on average 1.3622448979591837) internal successors, (1335), 1021 states have internal predecessors, (1335), 448 states have call successors, (448), 126 states have call predecessors, (448), 123 states have return successors, (447), 440 states have call predecessors, (447), 447 states have call successors, (447) [2022-12-14 10:43:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2230 transitions. [2022-12-14 10:43:42,853 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2230 transitions. Word has length 131 [2022-12-14 10:43:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:43:42,854 INFO L495 AbstractCegarLoop]: Abstraction has 1552 states and 2230 transitions. [2022-12-14 10:43:42,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 10:43:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2230 transitions. [2022-12-14 10:43:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 10:43:42,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:43:42,859 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-12-14 10:43:42,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:43:42,859 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:43:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:43:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1930804322, now seen corresponding path program 1 times [2022-12-14 10:43:42,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:43:42,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97519119] [2022-12-14 10:43:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:43:42,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:43:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:43:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-14 10:43:43,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:43:43,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97519119] [2022-12-14 10:43:43,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97519119] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:43:43,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562292301] [2022-12-14 10:43:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:43:43,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:43:43,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:43:43,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:43:43,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:43:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:43:43,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:43:43,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:43:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-12-14 10:43:43,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:43:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-12-14 10:43:43,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562292301] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:43:43,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1547125741] [2022-12-14 10:43:43,780 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-12-14 10:43:43,780 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:43:43,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:43:43,786 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:43:43,787 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:43:44,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:43:44,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:43:44,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:43:44,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-12-14 10:43:45,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:43:45,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:43:45,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:43:45,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-12-14 10:43:55,426 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 423 for LOIs [2022-12-14 10:43:56,063 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 136 for LOIs [2022-12-14 10:43:56,138 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 423 for LOIs [2022-12-14 10:43:56,281 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:45:15,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1547125741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:45:15,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:45:15,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [5, 4, 5] total 47 [2022-12-14 10:45:15,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799157747] [2022-12-14 10:45:15,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:45:15,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-14 10:45:15,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:45:15,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-14 10:45:15,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1897, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 10:45:15,419 INFO L87 Difference]: Start difference. First operand 1552 states and 2230 transitions. Second operand has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-14 10:46:12,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:46:14,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:46:16,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:46:18,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:46:19,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:46:27,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:46:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:57,048 INFO L93 Difference]: Finished difference Result 3171 states and 4581 transitions. [2022-12-14 10:46:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-14 10:46:57,049 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 133 [2022-12-14 10:46:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:57,054 INFO L225 Difference]: With dead ends: 3171 [2022-12-14 10:46:57,054 INFO L226 Difference]: Without dead ends: 1634 [2022-12-14 10:46:57,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 115.5s TimeCoverageRelationStatistics Valid=453, Invalid=3707, Unknown=0, NotChecked=0, Total=4160 [2022-12-14 10:46:57,058 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 61 mSDsluCounter, 16117 mSDsCounter, 0 mSdLazyCounter, 10497 mSolverCounterSat, 128 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 17075 SdHoareTripleChecker+Invalid, 10628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 10497 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:57,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 17075 Invalid, 10628 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [128 Valid, 10497 Invalid, 3 Unknown, 0 Unchecked, 64.7s Time] [2022-12-14 10:46:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2022-12-14 10:46:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1593. [2022-12-14 10:46:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1011 states have (on average 1.358061325420376) internal successors, (1373), 1052 states have internal predecessors, (1373), 456 states have call successors, (456), 129 states have call predecessors, (456), 125 states have return successors, (468), 447 states have call predecessors, (468), 455 states have call successors, (468) [2022-12-14 10:46:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2297 transitions. [2022-12-14 10:46:57,226 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2297 transitions. Word has length 133 [2022-12-14 10:46:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:57,226 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2297 transitions. [2022-12-14 10:46:57,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-14 10:46:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2297 transitions. [2022-12-14 10:46:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-14 10:46:57,234 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:57,234 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 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] [2022-12-14 10:46:57,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:46:57,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:57,435 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:46:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash 917587218, now seen corresponding path program 1 times [2022-12-14 10:46:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:46:57,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044778697] [2022-12-14 10:46:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:46:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-14 10:46:57,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:46:57,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044778697] [2022-12-14 10:46:57,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044778697] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:46:57,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468471514] [2022-12-14 10:46:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:57,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:46:57,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:57,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:46:57,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8852ef8-8988-435d-b528-5db9883bd5ea/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:46:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:58,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:46:58,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-12-14 10:46:58,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:46:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-12-14 10:46:58,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468471514] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:46:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1385788556] [2022-12-14 10:46:58,322 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2022-12-14 10:46:58,322 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:46:58,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:46:58,322 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:46:58,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:46:58,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 10:46:58,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 10:46:58,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 10:46:58,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:46:58,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:46:58,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:46:58,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-12-14 10:46:59,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:46:59,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:46:59,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:46:59,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-12-14 10:47:00,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:00,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 10:47:01,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:02,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:02,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 10:47:02,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:03,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:03,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:03,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 10:47:04,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 10:47:04,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:04,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:06,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:06,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:07,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:07,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:10,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:10,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:10,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:10,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 10:47:12,505 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 167 for LOIs [2022-12-14 10:47:13,200 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 677 for LOIs [2022-12-14 10:47:14,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 10:47:14,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 10:47:14,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 10:47:15,914 INFO L321 Elim1Store]: treesize reduction 324, result has 43.0 percent of original size [2022-12-14 10:47:15,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 27 select indices, 27 select index equivalence classes, 352 disjoint index pairs (out of 351 index pairs), introduced 28 new quantified variables, introduced 27 case distinctions, treesize of input 1549 treesize of output 1741 [2022-12-14 10:47:16,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:16,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:16,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:16,138 INFO L321 Elim1Store]: treesize reduction 44, result has 45.7 percent of original size [2022-12-14 10:47:16,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1510 treesize of output 1517 [2022-12-14 10:47:17,400 INFO L321 Elim1Store]: treesize reduction 270, result has 63.0 percent of original size [2022-12-14 10:47:17,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 29 select indices, 29 select index equivalence classes, 379 disjoint index pairs (out of 406 index pairs), introduced 30 new quantified variables, introduced 54 case distinctions, treesize of input 1474 treesize of output 1883 [2022-12-14 10:57:14,699 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 856 DAG size of output: 294 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)