./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/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_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/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_181b697a-0484-49ab-998a-749ec61dca0c/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 a3be286b709e69b0a57c5116077a4f1ba701b437b7bdc28c28b530a36c819e5e --- 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 14:43:09,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:43:09,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:43:09,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:43:09,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:43:09,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:43:09,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:43:09,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:43:09,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:43:09,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:43:09,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:43:09,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:43:09,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:43:09,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:43:09,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:43:09,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:43:09,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:43:09,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:43:09,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:43:09,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:43:09,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:43:09,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:43:09,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:43:09,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:43:09,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:43:09,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:43:09,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:43:09,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:43:09,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:43:09,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:43:09,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:43:09,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:43:09,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:43:09,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:43:09,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:43:09,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:43:09,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:43:09,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:43:09,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:43:09,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:43:09,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:43:09,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 14:43:09,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:43:09,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:43:09,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:43:09,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:43:09,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:43:09,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:43:09,214 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:43:09,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:43:09,214 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:43:09,214 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:43:09,214 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:43:09,214 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:43:09,215 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:43:09,215 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:43:09,215 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:43:09,215 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:43:09,215 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:43:09,216 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:43:09,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:43:09,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:43:09,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:43:09,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:43:09,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:43:09,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:43:09,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:43:09,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:43:09,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:43:09,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:43:09,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:43:09,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:43:09,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:43:09,218 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:43:09,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:43:09,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:43:09,219 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:43:09,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:43:09,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:43:09,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:43:09,219 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_181b697a-0484-49ab-998a-749ec61dca0c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3be286b709e69b0a57c5116077a4f1ba701b437b7bdc28c28b530a36c819e5e [2022-12-14 14:43:09,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:43:09,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:43:09,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:43:09,435 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:43:09,435 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:43:09,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i [2022-12-14 14:43:12,036 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:43:12,481 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:43:12,481 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i [2022-12-14 14:43:12,513 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/data/c7459808f/5d974dd9a65443d1a00e0b89b78e1048/FLAG631bff2fe [2022-12-14 14:43:12,605 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/data/c7459808f/5d974dd9a65443d1a00e0b89b78e1048 [2022-12-14 14:43:12,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:43:12,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:43:12,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:43:12,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:43:12,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:43:12,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:43:12" (1/1) ... [2022-12-14 14:43:12,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528e1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:12, skipping insertion in model container [2022-12-14 14:43:12,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:43:12" (1/1) ... [2022-12-14 14:43:12,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:43:12,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:43:13,232 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-14 14:43:13,542 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-14 14:43:13,562 WARN L623 FunctionHandler]: Unknown extern function __msecs_to_jiffies [2022-12-14 14:43:13,570 WARN L623 FunctionHandler]: Unknown extern function alloc_pages_current [2022-12-14 14:43:13,600 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:13,636 WARN L623 FunctionHandler]: Unknown extern function __register_chrdev [2022-12-14 14:43:13,645 WARN L623 FunctionHandler]: Unknown extern function __unregister_chrdev [2022-12-14 14:43:13,733 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 14:43:13,734 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 14:43:13,734 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 14:43:13,738 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 14:43:13,739 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 14:43:13,739 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 14:43:13,884 WARN L623 FunctionHandler]: Unknown extern function scsi_normalize_sense [2022-12-14 14:43:13,885 WARN L623 FunctionHandler]: Unknown extern function scsi_get_sense_info_fld [2022-12-14 14:43:13,886 WARN L623 FunctionHandler]: Unknown extern function scsi_sense_desc_find [2022-12-14 14:43:13,893 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:13,893 WARN L623 FunctionHandler]: Unknown extern function __scsi_print_sense [2022-12-14 14:43:13,893 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:13,894 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:13,894 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:13,901 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 14:43:13,902 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:13,902 WARN L623 FunctionHandler]: Unknown extern function blk_rq_unmap_user [2022-12-14 14:43:13,902 WARN L623 FunctionHandler]: Unknown extern function __blk_put_request [2022-12-14 14:43:13,911 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:13,916 WARN L623 FunctionHandler]: Unknown extern function blk_get_request [2022-12-14 14:43:13,917 WARN L623 FunctionHandler]: Unknown extern function blk_rq_set_block_pc [2022-12-14 14:43:13,918 WARN L623 FunctionHandler]: Unknown extern function sg_next [2022-12-14 14:43:13,919 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_user [2022-12-14 14:43:13,920 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:13,920 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_kern [2022-12-14 14:43:13,922 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq_nowait [2022-12-14 14:43:13,922 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-12-14 14:43:13,927 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:13,929 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:13,933 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion [2022-12-14 14:43:13,938 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion [2022-12-14 14:43:13,940 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:13,958 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:43:13,959 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:43:13,961 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:13,970 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:13,978 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 14:43:13,978 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:13,979 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:13,988 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:14,009 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,011 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:14,019 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-14 14:43:14,022 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,022 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,038 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,046 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,049 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,052 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,066 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,088 WARN L623 FunctionHandler]: Unknown extern function vmalloc [2022-12-14 14:43:14,089 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,091 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,091 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,093 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,093 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,097 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:14,098 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,098 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,100 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,101 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,107 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-14 14:43:14,109 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,109 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,110 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-14 14:43:14,110 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,113 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,114 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,116 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,117 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,118 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,125 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,127 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,141 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,142 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,144 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,145 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,164 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,169 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,175 WARN L623 FunctionHandler]: Unknown extern function vmalloc [2022-12-14 14:43:14,176 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,179 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,190 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,190 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,192 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:14,193 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:14,193 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 14:43:14,195 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:43:14,196 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,197 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,198 WARN L623 FunctionHandler]: Unknown extern function vmalloc [2022-12-14 14:43:14,199 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,202 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,203 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,203 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,204 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,204 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,205 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,205 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,206 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,206 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,207 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,207 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,208 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,209 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,209 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,210 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,218 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,235 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,235 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,237 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,238 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,241 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,242 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,244 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,250 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,252 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,253 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,257 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,268 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,287 WARN L623 FunctionHandler]: Unknown extern function scsi_set_medium_removal [2022-12-14 14:43:14,297 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-12-14 14:43:14,298 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,299 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,303 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,303 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,304 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,320 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-12-14 14:43:14,322 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,325 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,332 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,333 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,333 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,333 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,340 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,341 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,341 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,342 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,342 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,343 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,343 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,344 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,345 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,345 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,345 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,346 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,347 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,355 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,356 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,367 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 14:43:14,367 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,368 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,368 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,368 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,369 WARN L623 FunctionHandler]: Unknown extern function scsi_device_get [2022-12-14 14:43:14,369 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,369 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,369 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-12-14 14:43:14,370 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,372 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,377 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,380 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,382 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,382 WARN L623 FunctionHandler]: Unknown extern function scsi_device_put [2022-12-14 14:43:14,394 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,395 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,395 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,395 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,396 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,396 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,400 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 14:43:14,401 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,401 WARN L623 FunctionHandler]: Unknown extern function scsi_device_put [2022-12-14 14:43:14,406 WARN L623 FunctionHandler]: Unknown extern function scsi_ioctl_block_when_processing_errors [2022-12-14 14:43:14,407 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 14:43:14,407 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,414 WARN L623 FunctionHandler]: Unknown extern function scsi_ioctl [2022-12-14 14:43:14,424 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,425 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,426 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,427 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,429 WARN L623 FunctionHandler]: Unknown extern function __free_pages [2022-12-14 14:43:14,430 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,431 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,431 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,432 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,434 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,435 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,436 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,437 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,466 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:14,466 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:14,467 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:14,480 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-12-14 14:43:14,485 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-12-14 14:43:14,526 WARN L623 FunctionHandler]: Unknown extern function __class_create [2022-12-14 14:43:14,527 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,531 WARN L623 FunctionHandler]: Unknown extern function device_destroy [2022-12-14 14:43:14,535 WARN L623 FunctionHandler]: Unknown extern function device_create [2022-12-14 14:43:14,535 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,536 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:14,536 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:14,536 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:14,536 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:14,537 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:14,537 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:14,541 WARN L623 FunctionHandler]: Unknown extern function class_destroy [2022-12-14 14:43:14,542 WARN L623 FunctionHandler]: Unknown extern function alloc_disk [2022-12-14 14:43:14,542 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,543 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 14:43:14,543 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,543 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,543 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,544 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,544 WARN L623 FunctionHandler]: Unknown extern function panic [2022-12-14 14:43:14,544 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,545 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,545 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,545 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,545 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,546 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 14:43:14,547 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:14,547 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:14,549 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 14:43:14,549 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,550 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-14 14:43:14,550 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,550 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 14:43:14,551 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 14:43:14,552 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 14:43:14,552 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,552 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,553 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,553 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,553 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:14,557 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,558 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,558 WARN L623 FunctionHandler]: Unknown extern function scsi_register_driver [2022-12-14 14:43:14,558 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-12-14 14:43:14,563 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-12-14 14:43:14,564 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,564 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,564 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 14:43:14,564 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,564 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,565 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,578 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 14:43:14,580 WARN L623 FunctionHandler]: Unknown extern function noop_llseek [2022-12-14 14:43:14,583 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:14,583 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,583 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,583 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:14,583 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:14,584 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 14:43:14,584 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,584 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 14:43:14,584 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,585 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 14:43:14,585 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,585 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:14,585 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,585 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:14,586 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 14:43:14,586 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,586 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,586 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,586 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,587 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:14,591 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_181b697a-0484-49ab-998a-749ec61dca0c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i[358518,358531] [2022-12-14 14:43:14,787 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:14,789 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:14,789 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:14,789 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:14,794 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:14,805 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:14,805 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:14,805 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:14,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:43:14,828 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:43:14,883 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-14 14:43:14,887 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-14 14:43:14,888 WARN L623 FunctionHandler]: Unknown extern function __msecs_to_jiffies [2022-12-14 14:43:14,888 WARN L623 FunctionHandler]: Unknown extern function alloc_pages_current [2022-12-14 14:43:14,889 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:14,890 WARN L623 FunctionHandler]: Unknown extern function __register_chrdev [2022-12-14 14:43:14,891 WARN L623 FunctionHandler]: Unknown extern function __unregister_chrdev [2022-12-14 14:43:14,892 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 14:43:14,892 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 14:43:14,892 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 14:43:14,892 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 14:43:14,893 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 14:43:14,893 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 14:43:14,896 WARN L623 FunctionHandler]: Unknown extern function scsi_normalize_sense [2022-12-14 14:43:14,896 WARN L623 FunctionHandler]: Unknown extern function scsi_get_sense_info_fld [2022-12-14 14:43:14,897 WARN L623 FunctionHandler]: Unknown extern function scsi_sense_desc_find [2022-12-14 14:43:14,898 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,899 WARN L623 FunctionHandler]: Unknown extern function __scsi_print_sense [2022-12-14 14:43:14,899 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,899 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,899 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,900 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 14:43:14,900 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,901 WARN L623 FunctionHandler]: Unknown extern function blk_rq_unmap_user [2022-12-14 14:43:14,901 WARN L623 FunctionHandler]: Unknown extern function __blk_put_request [2022-12-14 14:43:14,917 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,918 WARN L623 FunctionHandler]: Unknown extern function blk_get_request [2022-12-14 14:43:14,918 WARN L623 FunctionHandler]: Unknown extern function blk_rq_set_block_pc [2022-12-14 14:43:14,919 WARN L623 FunctionHandler]: Unknown extern function sg_next [2022-12-14 14:43:14,920 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_user [2022-12-14 14:43:14,923 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:14,923 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_kern [2022-12-14 14:43:14,926 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq_nowait [2022-12-14 14:43:14,930 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-12-14 14:43:14,931 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,932 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,936 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion [2022-12-14 14:43:14,937 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion [2022-12-14 14:43:14,945 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,954 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:43:14,954 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:43:14,955 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,957 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,959 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 14:43:14,960 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:14,960 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:14,962 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:14,966 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,967 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:14,969 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-14 14:43:14,970 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,970 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,973 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,975 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,976 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,977 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,981 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,987 WARN L623 FunctionHandler]: Unknown extern function vmalloc [2022-12-14 14:43:14,988 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,989 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,989 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,991 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,991 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,993 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 14:43:14,994 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,994 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,995 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,996 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:14,997 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-14 14:43:14,998 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,999 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:14,999 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-14 14:43:14,999 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,001 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,002 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,003 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,004 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,004 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,007 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,008 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,013 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,013 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,014 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,016 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,020 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,021 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,022 WARN L623 FunctionHandler]: Unknown extern function vmalloc [2022-12-14 14:43:15,023 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,026 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,029 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,029 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,030 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:15,031 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:15,031 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 14:43:15,032 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:43:15,033 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,033 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,034 WARN L623 FunctionHandler]: Unknown extern function vmalloc [2022-12-14 14:43:15,034 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,036 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,037 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,037 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,037 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,038 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,038 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,038 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,039 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,039 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,039 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,040 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,040 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,040 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,041 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,041 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,044 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,048 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,048 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,049 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,050 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,052 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,052 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,054 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,055 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,057 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,058 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,060 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,067 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,098 WARN L623 FunctionHandler]: Unknown extern function scsi_set_medium_removal [2022-12-14 14:43:15,100 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-12-14 14:43:15,102 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,102 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,105 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,105 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,106 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,114 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-12-14 14:43:15,116 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,119 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,122 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,123 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,123 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,124 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,128 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,129 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,129 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,130 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,130 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,131 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,131 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,132 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,132 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,133 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,133 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,134 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,134 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,144 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,145 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,153 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 14:43:15,153 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,154 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,154 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,155 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,155 WARN L623 FunctionHandler]: Unknown extern function scsi_device_get [2022-12-14 14:43:15,155 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,156 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,156 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-12-14 14:43:15,157 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,159 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,166 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,171 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,173 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,174 WARN L623 FunctionHandler]: Unknown extern function scsi_device_put [2022-12-14 14:43:15,180 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,181 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,181 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,181 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,182 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,182 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,183 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 14:43:15,183 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,184 WARN L623 FunctionHandler]: Unknown extern function scsi_device_put [2022-12-14 14:43:15,185 WARN L623 FunctionHandler]: Unknown extern function scsi_ioctl_block_when_processing_errors [2022-12-14 14:43:15,187 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 14:43:15,187 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,201 WARN L623 FunctionHandler]: Unknown extern function scsi_ioctl [2022-12-14 14:43:15,207 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,208 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,209 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,210 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,212 WARN L623 FunctionHandler]: Unknown extern function __free_pages [2022-12-14 14:43:15,213 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,215 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,216 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,218 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,219 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,220 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,222 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,223 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,229 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:15,229 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:15,229 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:15,231 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-12-14 14:43:15,232 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-12-14 14:43:15,240 WARN L623 FunctionHandler]: Unknown extern function __class_create [2022-12-14 14:43:15,240 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,241 WARN L623 FunctionHandler]: Unknown extern function device_destroy [2022-12-14 14:43:15,241 WARN L623 FunctionHandler]: Unknown extern function device_create [2022-12-14 14:43:15,242 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,242 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:15,242 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:15,243 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:15,243 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:15,243 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:15,243 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 14:43:15,244 WARN L623 FunctionHandler]: Unknown extern function class_destroy [2022-12-14 14:43:15,245 WARN L623 FunctionHandler]: Unknown extern function alloc_disk [2022-12-14 14:43:15,245 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,246 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 14:43:15,246 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,247 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,247 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,247 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,248 WARN L623 FunctionHandler]: Unknown extern function panic [2022-12-14 14:43:15,248 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,248 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,249 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,249 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,249 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:15,249 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 14:43:15,251 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:15,251 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-14 14:43:15,253 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 14:43:15,253 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,254 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-14 14:43:15,254 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:15,254 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 14:43:15,255 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 14:43:15,256 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 14:43:15,256 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,256 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:15,257 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:15,257 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:15,257 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 14:43:15,257 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,258 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,258 WARN L623 FunctionHandler]: Unknown extern function scsi_register_driver [2022-12-14 14:43:15,258 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-12-14 14:43:15,259 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-12-14 14:43:15,260 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 14:43:15,260 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:15,260 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 14:43:15,260 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:15,261 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 14:43:15,261 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 14:43:15,264 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 14:43:15,267 WARN L623 FunctionHandler]: Unknown extern function noop_llseek [2022-12-14 14:43:15,270 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:15,270 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,270 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,270 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:15,271 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:15,271 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 14:43:15,271 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,271 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 14:43:15,272 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,272 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 14:43:15,272 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,273 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:15,273 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,273 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 14:43:15,273 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 14:43:15,273 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,274 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,274 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,274 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,274 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 14:43:15,275 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_181b697a-0484-49ab-998a-749ec61dca0c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i[358518,358531] [2022-12-14 14:43:15,285 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:15,286 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:15,286 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:15,286 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:15,287 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:15,289 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:15,289 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:15,289 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 14:43:15,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:43:15,372 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:43:15,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15 WrapperNode [2022-12-14 14:43:15,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:43:15,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:43:15,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:43:15,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:43:15,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:15,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:15,680 INFO L138 Inliner]: procedures = 319, calls = 4210, calls flagged for inlining = 120, calls inlined = 112, statements flattened = 9705 [2022-12-14 14:43:15,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:43:15,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:43:15,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:43:15,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:43:15,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:15,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:15,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:15,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:15,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:15,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:15,932 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:15,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:16,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:43:16,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:43:16,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:43:16,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:43:16,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (1/1) ... [2022-12-14 14:43:16,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:43:16,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:43:16,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:43:16,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:43:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-12-14 14:43:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-12-14 14:43:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2022-12-14 14:43:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2022-12-14 14:43:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-12-14 14:43:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-12-14 14:43:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-12-14 14:43:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-12-14 14:43:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-12-14 14:43:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 14:43:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 14:43:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 14:43:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 14:43:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-14 14:43:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-14 14:43:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2022-12-14 14:43:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2022-12-14 14:43:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-12-14 14:43:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-12-14 14:43:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-12-14 14:43:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-12-14 14:43:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-12-14 14:43:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-12-14 14:43:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-12-14 14:43:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-12-14 14:43:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2022-12-14 14:43:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2022-12-14 14:43:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 14:43:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 14:43:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2022-12-14 14:43:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2022-12-14 14:43:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2022-12-14 14:43:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2022-12-14 14:43:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-12-14 14:43:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-12-14 14:43:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-12-14 14:43:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-12-14 14:43:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-12-14 14:43:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-12-14 14:43:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-14 14:43:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-14 14:43:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-12-14 14:43:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-12-14 14:43:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2022-12-14 14:43:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2022-12-14 14:43:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-12-14 14:43:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-12-14 14:43:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-12-14 14:43:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-12-14 14:43:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 14:43:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 14:43:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 14:43:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 14:43:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2022-12-14 14:43:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2022-12-14 14:43:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2022-12-14 14:43:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2022-12-14 14:43:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-12-14 14:43:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-12-14 14:43:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2022-12-14 14:43:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2022-12-14 14:43:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2022-12-14 14:43:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2022-12-14 14:43:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2022-12-14 14:43:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2022-12-14 14:43:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2022-12-14 14:43:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2022-12-14 14:43:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:43:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2022-12-14 14:43:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2022-12-14 14:43:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 14:43:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2022-12-14 14:43:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2022-12-14 14:43:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-12-14 14:43:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-12-14 14:43:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-12-14 14:43:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-12-14 14:43:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:43:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_26 [2022-12-14 14:43:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_26 [2022-12-14 14:43:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2022-12-14 14:43:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2022-12-14 14:43:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2022-12-14 14:43:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2022-12-14 14:43:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-14 14:43:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-14 14:43:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-12-14 14:43:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-12-14 14:43:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2022-12-14 14:43:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2022-12-14 14:43:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-12-14 14:43:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-12-14 14:43:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-12-14 14:43:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-12-14 14:43:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:43:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2022-12-14 14:43:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2022-12-14 14:43:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 14:43:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-12-14 14:43:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-12-14 14:43:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-12-14 14:43:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-12-14 14:43:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-12-14 14:43:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-12-14 14:43:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2022-12-14 14:43:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2022-12-14 14:43:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-12-14 14:43:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-12-14 14:43:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2022-12-14 14:43:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2022-12-14 14:43:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2022-12-14 14:43:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2022-12-14 14:43:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 14:43:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2022-12-14 14:43:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2022-12-14 14:43:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-12-14 14:43:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-12-14 14:43:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-12-14 14:43:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-12-14 14:43:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 14:43:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:43:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2022-12-14 14:43:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2022-12-14 14:43:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2022-12-14 14:43:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2022-12-14 14:43:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 14:43:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 14:43:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2022-12-14 14:43:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2022-12-14 14:43:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2022-12-14 14:43:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2022-12-14 14:43:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-12-14 14:43:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-12-14 14:43:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2022-12-14 14:43:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2022-12-14 14:43:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-14 14:43:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-14 14:43:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2022-12-14 14:43:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2022-12-14 14:43:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-12-14 14:43:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-12-14 14:43:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:43:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-12-14 14:43:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-12-14 14:43:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2022-12-14 14:43:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2022-12-14 14:43:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2022-12-14 14:43:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2022-12-14 14:43:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2022-12-14 14:43:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2022-12-14 14:43:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 14:43:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 14:43:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-12-14 14:43:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-12-14 14:43:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-12-14 14:43:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-12-14 14:43:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:43:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-12-14 14:43:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-12-14 14:43:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-12-14 14:43:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-12-14 14:43:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-12-14 14:43:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-12-14 14:43:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-12-14 14:43:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-12-14 14:43:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:43:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2022-12-14 14:43:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2022-12-14 14:43:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 14:43:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 14:43:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write [2022-12-14 14:43:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write [2022-12-14 14:43:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2022-12-14 14:43:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2022-12-14 14:43:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-12-14 14:43:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-12-14 14:43:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:43:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-12-14 14:43:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2022-12-14 14:43:16,097 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2022-12-14 14:43:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure os_scsi_tape_flush [2022-12-14 14:43:16,097 INFO L138 BoogieDeclarations]: Found implementation of procedure os_scsi_tape_flush [2022-12-14 14:43:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2022-12-14 14:43:16,097 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2022-12-14 14:43:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2022-12-14 14:43:16,097 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2022-12-14 14:43:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-12-14 14:43:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-12-14 14:43:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-12-14 14:43:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-12-14 14:43:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-12-14 14:43:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-12-14 14:43:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2022-12-14 14:43:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2022-12-14 14:43:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2022-12-14 14:43:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2022-12-14 14:43:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2022-12-14 14:43:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2022-12-14 14:43:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-12-14 14:43:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-12-14 14:43:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2022-12-14 14:43:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2022-12-14 14:43:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-12-14 14:43:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-12-14 14:43:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-12-14 14:43:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-12-14 14:43:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:43:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2022-12-14 14:43:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2022-12-14 14:43:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2022-12-14 14:43:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2022-12-14 14:43:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:43:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:43:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-12-14 14:43:16,100 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-12-14 14:43:16,840 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:43:16,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:43:16,926 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 14:43:32,085 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:43:35,151 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:43:35,151 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 14:43:35,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:43:35 BoogieIcfgContainer [2022-12-14 14:43:35,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:43:35,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:43:35,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:43:35,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:43:35,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:43:12" (1/3) ... [2022-12-14 14:43:35,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56942c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:43:35, skipping insertion in model container [2022-12-14 14:43:35,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:43:15" (2/3) ... [2022-12-14 14:43:35,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56942c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:43:35, skipping insertion in model container [2022-12-14 14:43:35,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:43:35" (3/3) ... [2022-12-14 14:43:35,162 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i [2022-12-14 14:43:35,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:43:35,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:43:35,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:43:35,249 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;@751d3a3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:43:35,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:43:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 2288 states, 1551 states have (on average 1.4113475177304964) internal successors, (2189), 1589 states have internal predecessors, (2189), 638 states have call successors, (638), 98 states have call predecessors, (638), 97 states have return successors, (627), 624 states have call predecessors, (627), 627 states have call successors, (627) [2022-12-14 14:43:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-12-14 14:43:35,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:43:35,276 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:35,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:43:35,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:43:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash -165650296, now seen corresponding path program 1 times [2022-12-14 14:43:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:43:35,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106464763] [2022-12-14 14:43:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:43:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:43:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:43:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-12-14 14:43:36,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:43:36,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106464763] [2022-12-14 14:43:36,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106464763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:43:36,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:43:36,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:43:36,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059928304] [2022-12-14 14:43:36,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:43:36,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:43:36,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:43:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:43:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:43:36,238 INFO L87 Difference]: Start difference. First operand has 2288 states, 1551 states have (on average 1.4113475177304964) internal successors, (2189), 1589 states have internal predecessors, (2189), 638 states have call successors, (638), 98 states have call predecessors, (638), 97 states have return successors, (627), 624 states have call predecessors, (627), 627 states have call successors, (627) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2022-12-14 14:43:39,464 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 14:43:44,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:43:47,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:43:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:43:49,289 INFO L93 Difference]: Finished difference Result 4781 states and 7270 transitions. [2022-12-14 14:43:49,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:43:49,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 392 [2022-12-14 14:43:49,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:43:49,313 INFO L225 Difference]: With dead ends: 4781 [2022-12-14 14:43:49,313 INFO L226 Difference]: Without dead ends: 2530 [2022-12-14 14:43:49,325 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 14:43:49,327 INFO L413 NwaCegarLoop]: 3119 mSDtfsCounter, 518 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 6038 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:43:49,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 6038 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 753 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2022-12-14 14:43:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2022-12-14 14:43:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2515. [2022-12-14 14:43:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 1725 states have (on average 1.4052173913043478) internal successors, (2424), 1751 states have internal predecessors, (2424), 671 states have call successors, (671), 119 states have call predecessors, (671), 118 states have return successors, (662), 658 states have call predecessors, (662), 662 states have call successors, (662) [2022-12-14 14:43:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3757 transitions. [2022-12-14 14:43:49,463 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 3757 transitions. Word has length 392 [2022-12-14 14:43:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:43:49,464 INFO L495 AbstractCegarLoop]: Abstraction has 2515 states and 3757 transitions. [2022-12-14 14:43:49,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2022-12-14 14:43:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 3757 transitions. [2022-12-14 14:43:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-12-14 14:43:49,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:43:49,471 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:49,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:43:49,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:43:49,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:43:49,472 INFO L85 PathProgramCache]: Analyzing trace with hash -351903526, now seen corresponding path program 1 times [2022-12-14 14:43:49,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:43:49,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557126871] [2022-12-14 14:43:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:43:49,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:43:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:43:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-12-14 14:43:49,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:43:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557126871] [2022-12-14 14:43:49,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557126871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:43:49,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:43:49,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:43:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065811573] [2022-12-14 14:43:49,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:43:49,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:43:49,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:43:49,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:43:49,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:43:49,950 INFO L87 Difference]: Start difference. First operand 2515 states and 3757 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 14:43:51,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:43:54,267 WARN L539 Checker$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 14:43:58,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:44:01,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:44:05,346 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 14:44:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:44:07,991 INFO L93 Difference]: Finished difference Result 7244 states and 10826 transitions. [2022-12-14 14:44:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:44:07,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 401 [2022-12-14 14:44:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:44:08,013 INFO L225 Difference]: With dead ends: 7244 [2022-12-14 14:44:08,013 INFO L226 Difference]: Without dead ends: 4803 [2022-12-14 14:44:08,023 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 14:44:08,024 INFO L413 NwaCegarLoop]: 4085 mSDtfsCounter, 3128 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3128 SdHoareTripleChecker+Valid, 7086 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:44:08,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3128 Valid, 7086 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 828 Invalid, 4 Unknown, 0 Unchecked, 17.8s Time] [2022-12-14 14:44:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2022-12-14 14:44:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4794. [2022-12-14 14:44:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 3317 states have (on average 1.4082001808863431) internal successors, (4671), 3353 states have internal predecessors, (4671), 1250 states have call successors, (1250), 227 states have call predecessors, (1250), 226 states have return successors, (1241), 1237 states have call predecessors, (1241), 1241 states have call successors, (1241) [2022-12-14 14:44:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 7162 transitions. [2022-12-14 14:44:08,180 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 7162 transitions. Word has length 401 [2022-12-14 14:44:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:44:08,181 INFO L495 AbstractCegarLoop]: Abstraction has 4794 states and 7162 transitions. [2022-12-14 14:44:08,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 14:44:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 7162 transitions. [2022-12-14 14:44:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-12-14 14:44:08,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:44:08,190 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:44:08,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:44:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:44:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1458761405, now seen corresponding path program 1 times [2022-12-14 14:44:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:44:08,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721244991] [2022-12-14 14:44:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:44:08,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:44:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:44:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-12-14 14:44:08,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:44:08,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721244991] [2022-12-14 14:44:08,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721244991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:44:08,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:44:08,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:44:08,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020284597] [2022-12-14 14:44:08,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:44:08,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:44:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:44:08,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:44:08,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:44:08,726 INFO L87 Difference]: Start difference. First operand 4794 states and 7162 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2022-12-14 14:44:11,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:44:13,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:44:18,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:44:21,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:44:26,001 WARN L539 Checker$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 14:44:27,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:44:30,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:44:34,364 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 14:44:37,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:44:37,274 INFO L93 Difference]: Finished difference Result 14213 states and 21837 transitions. [2022-12-14 14:44:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:44:37,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 410 [2022-12-14 14:44:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:44:37,309 INFO L225 Difference]: With dead ends: 14213 [2022-12-14 14:44:37,309 INFO L226 Difference]: Without dead ends: 9493 [2022-12-14 14:44:37,329 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 14:44:37,330 INFO L413 NwaCegarLoop]: 4617 mSDtfsCounter, 2490 mSDsluCounter, 8082 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 351 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 12699 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:44:37,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2839 Valid, 12699 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1462 Invalid, 5 Unknown, 0 Unchecked, 28.2s Time] [2022-12-14 14:44:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9493 states. [2022-12-14 14:44:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9493 to 4796. [2022-12-14 14:44:37,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 3319 states have (on average 1.4079542030732148) internal successors, (4673), 3355 states have internal predecessors, (4673), 1250 states have call successors, (1250), 227 states have call predecessors, (1250), 226 states have return successors, (1241), 1237 states have call predecessors, (1241), 1241 states have call successors, (1241) [2022-12-14 14:44:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 7164 transitions. [2022-12-14 14:44:37,611 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 7164 transitions. Word has length 410 [2022-12-14 14:44:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:44:37,612 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 7164 transitions. [2022-12-14 14:44:37,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2022-12-14 14:44:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 7164 transitions. [2022-12-14 14:44:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-12-14 14:44:37,615 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:44:37,615 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:37,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:44:37,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:44:37,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:44:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1774654118, now seen corresponding path program 1 times [2022-12-14 14:44:37,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:44:37,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081886107] [2022-12-14 14:44:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:44:37,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:44:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:44:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-12-14 14:44:37,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:44:37,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081886107] [2022-12-14 14:44:37,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081886107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:44:37,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:44:37,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:44:37,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223063444] [2022-12-14 14:44:37,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:44:37,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:44:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:44:37,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:44:37,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:44:37,992 INFO L87 Difference]: Start difference. First operand 4796 states and 7164 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:44:40,633 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 14:44:45,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:44:48,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:44:53,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:44:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:44:54,819 INFO L93 Difference]: Finished difference Result 9445 states and 14108 transitions. [2022-12-14 14:44:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:44:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 414 [2022-12-14 14:44:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:44:54,859 INFO L225 Difference]: With dead ends: 9445 [2022-12-14 14:44:54,859 INFO L226 Difference]: Without dead ends: 9442 [2022-12-14 14:44:54,865 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 14:44:54,865 INFO L413 NwaCegarLoop]: 5610 mSDtfsCounter, 3208 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3208 SdHoareTripleChecker+Valid, 8535 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:44:54,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3208 Valid, 8535 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2022-12-14 14:44:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9442 states. [2022-12-14 14:44:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9442 to 9436. [2022-12-14 14:44:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9436 states, 6552 states have (on average 1.409798534798535) internal successors, (9237), 6614 states have internal predecessors, (9237), 2436 states have call successors, (2436), 448 states have call predecessors, (2436), 447 states have return successors, (2427), 2420 states have call predecessors, (2427), 2427 states have call successors, (2427) [2022-12-14 14:44:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9436 states to 9436 states and 14100 transitions. [2022-12-14 14:44:55,173 INFO L78 Accepts]: Start accepts. Automaton has 9436 states and 14100 transitions. Word has length 414 [2022-12-14 14:44:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:44:55,173 INFO L495 AbstractCegarLoop]: Abstraction has 9436 states and 14100 transitions. [2022-12-14 14:44:55,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:44:55,174 INFO L276 IsEmpty]: Start isEmpty. Operand 9436 states and 14100 transitions. [2022-12-14 14:44:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-12-14 14:44:55,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:44:55,177 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:55,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:44:55,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:44:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:44:55,177 INFO L85 PathProgramCache]: Analyzing trace with hash 819272721, now seen corresponding path program 1 times [2022-12-14 14:44:55,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:44:55,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049912396] [2022-12-14 14:44:55,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:44:55,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:44:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:44:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-12-14 14:44:55,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:44:55,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049912396] [2022-12-14 14:44:55,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049912396] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:44:55,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:44:55,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:44:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666760348] [2022-12-14 14:44:55,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:44:55,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:44:55,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:44:55,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:44:55,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:44:55,512 INFO L87 Difference]: Start difference. First operand 9436 states and 14100 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:44:57,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:44:59,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:45:04,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:45:06,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:45:12,134 WARN L539 Checker$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 14:45:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:45:15,028 INFO L93 Difference]: Finished difference Result 9446 states and 14109 transitions. [2022-12-14 14:45:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:45:15,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 415 [2022-12-14 14:45:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:45:15,061 INFO L225 Difference]: With dead ends: 9446 [2022-12-14 14:45:15,062 INFO L226 Difference]: Without dead ends: 9443 [2022-12-14 14:45:15,067 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 14:45:15,068 INFO L413 NwaCegarLoop]: 5610 mSDtfsCounter, 3205 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 8538 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:45:15,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3205 Valid, 8538 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1031 Invalid, 5 Unknown, 0 Unchecked, 19.3s Time] [2022-12-14 14:45:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9443 states. [2022-12-14 14:45:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9443 to 9437. [2022-12-14 14:45:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9437 states, 6553 states have (on average 1.409735998779185) internal successors, (9238), 6615 states have internal predecessors, (9238), 2436 states have call successors, (2436), 448 states have call predecessors, (2436), 447 states have return successors, (2427), 2420 states have call predecessors, (2427), 2427 states have call successors, (2427) [2022-12-14 14:45:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9437 states to 9437 states and 14101 transitions. [2022-12-14 14:45:15,418 INFO L78 Accepts]: Start accepts. Automaton has 9437 states and 14101 transitions. Word has length 415 [2022-12-14 14:45:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:45:15,418 INFO L495 AbstractCegarLoop]: Abstraction has 9437 states and 14101 transitions. [2022-12-14 14:45:15,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:45:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 9437 states and 14101 transitions. [2022-12-14 14:45:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-12-14 14:45:15,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:45:15,421 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:45:15,421 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:45:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:45:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash -373369027, now seen corresponding path program 1 times [2022-12-14 14:45:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:45:15,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058994555] [2022-12-14 14:45:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:45:15,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:45:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:45:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-12-14 14:45:15,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:45:15,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058994555] [2022-12-14 14:45:15,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058994555] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:45:15,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:45:15,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:45:15,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077537503] [2022-12-14 14:45:15,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:45:15,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:45:15,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:45:15,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:45:15,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:45:15,775 INFO L87 Difference]: Start difference. First operand 9437 states and 14101 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:45:18,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:45:23,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:45:25,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:45:28,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:45:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:45:32,098 INFO L93 Difference]: Finished difference Result 16392 states and 24287 transitions. [2022-12-14 14:45:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:45:32,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 416 [2022-12-14 14:45:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:45:32,164 INFO L225 Difference]: With dead ends: 16392 [2022-12-14 14:45:32,164 INFO L226 Difference]: Without dead ends: 16388 [2022-12-14 14:45:32,173 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 14:45:32,173 INFO L413 NwaCegarLoop]: 4436 mSDtfsCounter, 2302 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 7341 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:45:32,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 7341 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 871 Invalid, 4 Unknown, 0 Unchecked, 15.9s Time] [2022-12-14 14:45:32,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16388 states. [2022-12-14 14:45:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16388 to 16382. [2022-12-14 14:45:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16382 states, 11302 states have (on average 1.3971863387011147) internal successors, (15791), 11418 states have internal predecessors, (15791), 4238 states have call successors, (4238), 846 states have call predecessors, (4238), 841 states have return successors, (4245), 4206 states have call predecessors, (4245), 4229 states have call successors, (4245) [2022-12-14 14:45:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16382 states to 16382 states and 24274 transitions. [2022-12-14 14:45:32,742 INFO L78 Accepts]: Start accepts. Automaton has 16382 states and 24274 transitions. Word has length 416 [2022-12-14 14:45:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:45:32,743 INFO L495 AbstractCegarLoop]: Abstraction has 16382 states and 24274 transitions. [2022-12-14 14:45:32,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:45:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 16382 states and 24274 transitions. [2022-12-14 14:45:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-12-14 14:45:32,745 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:45:32,745 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:32,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:45:32,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:45:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:45:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1309447316, now seen corresponding path program 1 times [2022-12-14 14:45:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:45:32,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164656876] [2022-12-14 14:45:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:45:32,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:45:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:45:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-12-14 14:45:33,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:45:33,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164656876] [2022-12-14 14:45:33,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164656876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:45:33,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:45:33,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:45:33,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307071300] [2022-12-14 14:45:33,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:45:33,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:45:33,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:45:33,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:45:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:45:33,061 INFO L87 Difference]: Start difference. First operand 16382 states and 24274 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:45:35,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:45:40,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:45:42,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:45:45,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:45:48,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:45:49,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:45:52,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:45:54,494 WARN L539 Checker$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 14:45:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:45:56,787 INFO L93 Difference]: Finished difference Result 24525 states and 36339 transitions. [2022-12-14 14:45:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:45:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 417 [2022-12-14 14:45:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:45:56,866 INFO L225 Difference]: With dead ends: 24525 [2022-12-14 14:45:56,866 INFO L226 Difference]: Without dead ends: 24522 [2022-12-14 14:45:56,875 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 14:45:56,876 INFO L413 NwaCegarLoop]: 5625 mSDtfsCounter, 3230 mSDsluCounter, 2934 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3230 SdHoareTripleChecker+Valid, 8559 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:45:56,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3230 Valid, 8559 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 4 Unknown, 0 Unchecked, 23.1s Time] [2022-12-14 14:45:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24522 states. [2022-12-14 14:45:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24522 to 24513. [2022-12-14 14:45:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24513 states, 16925 states have (on average 1.397754800590842) internal successors, (23657), 17094 states have internal predecessors, (23657), 6328 states have call successors, (6328), 1266 states have call predecessors, (6328), 1259 states have return successors, (6343), 6285 states have call predecessors, (6343), 6319 states have call successors, (6343) [2022-12-14 14:45:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24513 states to 24513 states and 36328 transitions. [2022-12-14 14:45:57,689 INFO L78 Accepts]: Start accepts. Automaton has 24513 states and 36328 transitions. Word has length 417 [2022-12-14 14:45:57,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:45:57,690 INFO L495 AbstractCegarLoop]: Abstraction has 24513 states and 36328 transitions. [2022-12-14 14:45:57,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:45:57,690 INFO L276 IsEmpty]: Start isEmpty. Operand 24513 states and 36328 transitions. [2022-12-14 14:45:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2022-12-14 14:45:57,693 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:45:57,693 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:57,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:45:57,694 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:45:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:45:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1937151264, now seen corresponding path program 1 times [2022-12-14 14:45:57,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:45:57,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929191653] [2022-12-14 14:45:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:45:57,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:45:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:45:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-12-14 14:45:58,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:45:58,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929191653] [2022-12-14 14:45:58,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929191653] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:45:58,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:45:58,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:45:58,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222533147] [2022-12-14 14:45:58,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:45:58,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:45:58,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:45:58,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:45:58,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:45:58,046 INFO L87 Difference]: Start difference. First operand 24513 states and 36328 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:46:01,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:46:05,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:46:07,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:46:10,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:46:13,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:46:16,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:16,150 INFO L93 Difference]: Finished difference Result 39620 states and 58052 transitions. [2022-12-14 14:46:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:46:16,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 418 [2022-12-14 14:46:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:16,317 INFO L225 Difference]: With dead ends: 39620 [2022-12-14 14:46:16,317 INFO L226 Difference]: Without dead ends: 39584 [2022-12-14 14:46:16,338 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 14:46:16,338 INFO L413 NwaCegarLoop]: 4644 mSDtfsCounter, 2122 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 7563 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:16,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2122 Valid, 7563 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 912 Invalid, 4 Unknown, 0 Unchecked, 17.3s Time] [2022-12-14 14:46:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39584 states. [2022-12-14 14:46:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39584 to 39576. [2022-12-14 14:46:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39576 states, 27200 states have (on average 1.3861764705882353) internal successors, (37704), 27489 states have internal predecessors, (37704), 10123 states have call successors, (10123), 2273 states have call predecessors, (10123), 2252 states have return successors, (10154), 10044 states have call predecessors, (10154), 10114 states have call successors, (10154) [2022-12-14 14:46:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39576 states to 39576 states and 57981 transitions. [2022-12-14 14:46:17,795 INFO L78 Accepts]: Start accepts. Automaton has 39576 states and 57981 transitions. Word has length 418 [2022-12-14 14:46:17,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:17,795 INFO L495 AbstractCegarLoop]: Abstraction has 39576 states and 57981 transitions. [2022-12-14 14:46:17,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-14 14:46:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 39576 states and 57981 transitions. [2022-12-14 14:46:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-12-14 14:46:17,802 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:17,803 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:46:17,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 14:46:17,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:17,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash 335276428, now seen corresponding path program 1 times [2022-12-14 14:46:17,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:17,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649056285] [2022-12-14 14:46:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:17,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3713 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2022-12-14 14:46:18,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:18,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649056285] [2022-12-14 14:46:18,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649056285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:18,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:18,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:46:18,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346522667] [2022-12-14 14:46:18,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:18,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:46:18,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:18,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:46:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:46:18,316 INFO L87 Difference]: Start difference. First operand 39576 states and 57981 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-12-14 14:46:21,335 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 14:46:26,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:46:30,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:46:34,595 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 14:46:38,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:46:38,540 INFO L93 Difference]: Finished difference Result 80953 states and 119277 transitions. [2022-12-14 14:46:38,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:46:38,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 476 [2022-12-14 14:46:38,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:46:38,687 INFO L225 Difference]: With dead ends: 80953 [2022-12-14 14:46:38,687 INFO L226 Difference]: Without dead ends: 41451 [2022-12-14 14:46:38,823 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 14:46:38,824 INFO L413 NwaCegarLoop]: 4263 mSDtfsCounter, 4492 mSDsluCounter, 7025 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 273 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4492 SdHoareTripleChecker+Valid, 11288 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:46:38,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4492 Valid, 11288 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1449 Invalid, 4 Unknown, 0 Unchecked, 18.7s Time] [2022-12-14 14:46:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41451 states. [2022-12-14 14:46:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41451 to 34893. [2022-12-14 14:46:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34893 states, 23951 states have (on average 1.3872907185503738) internal successors, (33227), 24223 states have internal predecessors, (33227), 8885 states have call successors, (8885), 2075 states have call predecessors, (8885), 2056 states have return successors, (8912), 8803 states have call predecessors, (8912), 8876 states have call successors, (8912) [2022-12-14 14:46:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34893 states to 34893 states and 51024 transitions. [2022-12-14 14:46:40,061 INFO L78 Accepts]: Start accepts. Automaton has 34893 states and 51024 transitions. Word has length 476 [2022-12-14 14:46:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:46:40,062 INFO L495 AbstractCegarLoop]: Abstraction has 34893 states and 51024 transitions. [2022-12-14 14:46:40,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-12-14 14:46:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 34893 states and 51024 transitions. [2022-12-14 14:46:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-12-14 14:46:40,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:46:40,067 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:46:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 14:46:40,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:46:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:46:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash 683534415, now seen corresponding path program 1 times [2022-12-14 14:46:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:46:40,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231266242] [2022-12-14 14:46:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:46:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:46:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:46:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3221 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3216 trivial. 0 not checked. [2022-12-14 14:46:40,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:46:40,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231266242] [2022-12-14 14:46:40,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231266242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:46:40,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:46:40,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:46:40,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887229698] [2022-12-14 14:46:40,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:46:40,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:46:40,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:46:40,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:46:40,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:46:40,707 INFO L87 Difference]: Start difference. First operand 34893 states and 51024 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-12-14 14:46:45,101 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 14:46:47,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 14:46:49,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:46:55,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:47:00,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:47:00,067 INFO L93 Difference]: Finished difference Result 100835 states and 147491 transitions. [2022-12-14 14:47:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:47:00,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 485 [2022-12-14 14:47:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:47:00,456 INFO L225 Difference]: With dead ends: 100835 [2022-12-14 14:47:00,456 INFO L226 Difference]: Without dead ends: 66016 [2022-12-14 14:47:00,755 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 14:47:00,755 INFO L413 NwaCegarLoop]: 5602 mSDtfsCounter, 3178 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 8531 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:47:00,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3178 Valid, 8531 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1042 Invalid, 3 Unknown, 0 Unchecked, 16.7s Time] [2022-12-14 14:47:00,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66016 states. [2022-12-14 14:47:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66016 to 52452. [2022-12-14 14:47:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52452 states, 36094 states have (on average 1.3879315121626863) internal successors, (50096), 36490 states have internal predecessors, (50096), 13348 states have call successors, (13348), 3038 states have call predecessors, (13348), 3009 states have return successors, (13395), 13221 states have call predecessors, (13395), 13339 states have call successors, (13395) [2022-12-14 14:47:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52452 states to 52452 states and 76839 transitions. [2022-12-14 14:47:02,517 INFO L78 Accepts]: Start accepts. Automaton has 52452 states and 76839 transitions. Word has length 485 [2022-12-14 14:47:02,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:47:02,517 INFO L495 AbstractCegarLoop]: Abstraction has 52452 states and 76839 transitions. [2022-12-14 14:47:02,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-12-14 14:47:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 52452 states and 76839 transitions. [2022-12-14 14:47:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-12-14 14:47:02,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:47:02,524 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:47:02,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 14:47:02,524 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:47:02,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:47:02,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1171927382, now seen corresponding path program 1 times [2022-12-14 14:47:02,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:47:02,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639219513] [2022-12-14 14:47:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:47:02,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:47:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:47:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3983 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3983 trivial. 0 not checked. [2022-12-14 14:47:03,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:47:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639219513] [2022-12-14 14:47:03,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639219513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:47:03,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:47:03,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 14:47:03,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819791774] [2022-12-14 14:47:03,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:47:03,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:47:03,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:47:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:47:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:47:03,634 INFO L87 Difference]: Start difference. First operand 52452 states and 76839 transitions. Second operand has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-12-14 14:47:04,909 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 14:47:06,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:07,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:09,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:13,712 WARN L539 Checker$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 14:47:17,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:47:20,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:22,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:23,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:26,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:31,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:47:35,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:47:35,006 INFO L93 Difference]: Finished difference Result 64165 states and 93477 transitions. [2022-12-14 14:47:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:47:35,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) Word has length 489 [2022-12-14 14:47:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:47:35,327 INFO L225 Difference]: With dead ends: 64165 [2022-12-14 14:47:35,327 INFO L226 Difference]: Without dead ends: 64162 [2022-12-14 14:47:35,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:47:35,365 INFO L413 NwaCegarLoop]: 3610 mSDtfsCounter, 4071 mSDsluCounter, 8446 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 1615 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4071 SdHoareTripleChecker+Valid, 12056 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1615 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:47:35,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4071 Valid, 12056 Invalid, 3095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1615 Valid, 1474 Invalid, 6 Unknown, 0 Unchecked, 29.8s Time] [2022-12-14 14:47:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64162 states. [2022-12-14 14:47:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64162 to 64162. [2022-12-14 14:47:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64162 states, 43698 states have (on average 1.375028605428166) internal successors, (60086), 44178 states have internal predecessors, (60086), 16664 states have call successors, (16664), 3842 states have call predecessors, (16664), 3799 states have return successors, (16711), 16523 states have call predecessors, (16711), 16655 states have call successors, (16711) [2022-12-14 14:47:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64162 states to 64162 states and 93461 transitions. [2022-12-14 14:47:37,465 INFO L78 Accepts]: Start accepts. Automaton has 64162 states and 93461 transitions. Word has length 489 [2022-12-14 14:47:37,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:47:37,465 INFO L495 AbstractCegarLoop]: Abstraction has 64162 states and 93461 transitions. [2022-12-14 14:47:37,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-12-14 14:47:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand 64162 states and 93461 transitions. [2022-12-14 14:47:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-12-14 14:47:37,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:47:37,471 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:47:37,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 14:47:37,471 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:47:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:47:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash 819187847, now seen corresponding path program 1 times [2022-12-14 14:47:37,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:47:37,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330266679] [2022-12-14 14:47:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:47:37,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:47:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:47:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3983 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3976 trivial. 0 not checked. [2022-12-14 14:47:37,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:47:37,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330266679] [2022-12-14 14:47:37,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330266679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:47:37,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:47:37,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:47:37,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251606780] [2022-12-14 14:47:37,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:47:37,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:47:37,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:47:37,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:47:37,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:47:37,846 INFO L87 Difference]: Start difference. First operand 64162 states and 93461 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-12-14 14:47:39,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:42,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:47:45,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:47,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:47:52,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:47:55,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:47:55,395 INFO L93 Difference]: Finished difference Result 174072 states and 252746 transitions. [2022-12-14 14:47:55,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:47:55,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 488 [2022-12-14 14:47:55,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:47:56,059 INFO L225 Difference]: With dead ends: 174072 [2022-12-14 14:47:56,059 INFO L226 Difference]: Without dead ends: 110084 [2022-12-14 14:47:56,254 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 14:47:56,254 INFO L413 NwaCegarLoop]: 3694 mSDtfsCounter, 2420 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:47:56,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 6234 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 769 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2022-12-14 14:47:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110084 states. [2022-12-14 14:47:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110084 to 109886. [2022-12-14 14:47:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109886 states, 74640 states have (on average 1.364750803858521) internal successors, (101865), 75434 states have internal predecessors, (101865), 28568 states have call successors, (28568), 6746 states have call predecessors, (28568), 6677 states have return successors, (28615), 28369 states have call predecessors, (28615), 28559 states have call successors, (28615) [2022-12-14 14:47:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109886 states to 109886 states and 159048 transitions. [2022-12-14 14:47:59,986 INFO L78 Accepts]: Start accepts. Automaton has 109886 states and 159048 transitions. Word has length 488 [2022-12-14 14:47:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:47:59,986 INFO L495 AbstractCegarLoop]: Abstraction has 109886 states and 159048 transitions. [2022-12-14 14:47:59,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-12-14 14:47:59,987 INFO L276 IsEmpty]: Start isEmpty. Operand 109886 states and 159048 transitions. [2022-12-14 14:47:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-12-14 14:47:59,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:47:59,992 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:47:59,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 14:47:59,992 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:47:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:47:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1871563645, now seen corresponding path program 1 times [2022-12-14 14:47:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:47:59,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3111366] [2022-12-14 14:47:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:47:59,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:48:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:48:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3985 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-12-14 14:48:00,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:48:00,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3111366] [2022-12-14 14:48:00,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3111366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:48:00,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:48:00,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:48:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170573914] [2022-12-14 14:48:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:48:00,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:48:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:48:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:48:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:48:00,363 INFO L87 Difference]: Start difference. First operand 109886 states and 159048 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-12-14 14:48:03,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:48:05,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:48:08,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:48:12,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:48:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:48:15,505 INFO L93 Difference]: Finished difference Result 121850 states and 175804 transitions. [2022-12-14 14:48:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:48:15,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 491 [2022-12-14 14:48:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:48:16,098 INFO L225 Difference]: With dead ends: 121850 [2022-12-14 14:48:16,099 INFO L226 Difference]: Without dead ends: 121847 [2022-12-14 14:48:16,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:48:16,173 INFO L413 NwaCegarLoop]: 4156 mSDtfsCounter, 2337 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 6230 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:48:16,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 6230 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 757 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2022-12-14 14:48:16,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121847 states. [2022-12-14 14:48:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121847 to 121843. [2022-12-14 14:48:19,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121843 states, 82288 states have (on average 1.358654967917558) internal successors, (111801), 83201 states have internal predecessors, (111801), 31959 states have call successors, (31959), 7670 states have call predecessors, (31959), 7595 states have return successors, (32007), 31743 states have call predecessors, (32007), 31951 states have call successors, (32007) [2022-12-14 14:48:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121843 states to 121843 states and 175767 transitions. [2022-12-14 14:48:20,296 INFO L78 Accepts]: Start accepts. Automaton has 121843 states and 175767 transitions. Word has length 491 [2022-12-14 14:48:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:48:20,297 INFO L495 AbstractCegarLoop]: Abstraction has 121843 states and 175767 transitions. [2022-12-14 14:48:20,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-12-14 14:48:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 121843 states and 175767 transitions. [2022-12-14 14:48:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-12-14 14:48:20,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:48:20,305 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:48:20,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 14:48:20,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:48:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:48:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash 572295840, now seen corresponding path program 1 times [2022-12-14 14:48:20,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:48:20,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41764153] [2022-12-14 14:48:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:48:20,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:48:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:48:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4013 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 3970 trivial. 0 not checked. [2022-12-14 14:48:21,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:48:21,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41764153] [2022-12-14 14:48:21,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41764153] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:48:21,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344040068] [2022-12-14 14:48:21,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:48:21,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:48:21,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:48:21,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:48:21,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:48:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:48:22,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 5294 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 14:48:22,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:48:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4013 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3983 trivial. 0 not checked. [2022-12-14 14:48:23,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:48:23,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344040068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:48:23,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:48:23,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-12-14 14:48:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240556095] [2022-12-14 14:48:23,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:48:23,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:48:23,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:48:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:48:23,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-14 14:48:23,106 INFO L87 Difference]: Start difference. First operand 121843 states and 175767 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-12-14 14:48:24,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:48:26,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:48:32,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:48:35,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:48:41,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:48:43,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:48:44,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:48:51,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:48:58,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:48:58,695 INFO L93 Difference]: Finished difference Result 163056 states and 235245 transitions. [2022-12-14 14:48:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:48:58,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) Word has length 505 [2022-12-14 14:48:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:48:59,489 INFO L225 Difference]: With dead ends: 163056 [2022-12-14 14:48:59,489 INFO L226 Difference]: Without dead ends: 162973 [2022-12-14 14:48:59,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:48:59,552 INFO L413 NwaCegarLoop]: 4112 mSDtfsCounter, 2486 mSDsluCounter, 12134 mSDsCounter, 0 mSdLazyCounter, 5118 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 16246 SdHoareTripleChecker+Invalid, 5128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5118 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:48:59,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2505 Valid, 16246 Invalid, 5128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 5118 Invalid, 4 Unknown, 0 Unchecked, 31.5s Time] [2022-12-14 14:48:59,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162973 states. [2022-12-14 14:49:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162973 to 162311. [2022-12-14 14:49:04,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162311 states, 109790 states have (on average 1.3604062300755988) internal successors, (149359), 111067 states have internal predecessors, (149359), 42440 states have call successors, (42440), 10189 states have call predecessors, (42440), 10080 states have return successors, (42516), 42090 states have call predecessors, (42516), 42432 states have call successors, (42516) [2022-12-14 14:49:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162311 states to 162311 states and 234315 transitions. [2022-12-14 14:49:05,594 INFO L78 Accepts]: Start accepts. Automaton has 162311 states and 234315 transitions. Word has length 505 [2022-12-14 14:49:05,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:05,595 INFO L495 AbstractCegarLoop]: Abstraction has 162311 states and 234315 transitions. [2022-12-14 14:49:05,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-12-14 14:49:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 162311 states and 234315 transitions. [2022-12-14 14:49:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-12-14 14:49:05,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:05,611 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:05,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:49:05,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:49:05,813 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:49:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:05,814 INFO L85 PathProgramCache]: Analyzing trace with hash -904784496, now seen corresponding path program 1 times [2022-12-14 14:49:05,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:05,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790650051] [2022-12-14 14:49:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:05,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3503 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2022-12-14 14:49:06,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:06,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790650051] [2022-12-14 14:49:06,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790650051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:06,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:06,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:49:06,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693004479] [2022-12-14 14:49:06,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:06,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:49:06,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:06,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:49:06,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:49:06,433 INFO L87 Difference]: Start difference. First operand 162311 states and 234315 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-12-14 14:49:08,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:49:14,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:49:17,243 WARN L539 Checker$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 14:49:21,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:49:24,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:49:28,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:49:33,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:49:34,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:49:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:49:41,328 INFO L93 Difference]: Finished difference Result 398503 states and 588304 transitions. [2022-12-14 14:49:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:49:41,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 535 [2022-12-14 14:49:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:49:42,473 INFO L225 Difference]: With dead ends: 398503 [2022-12-14 14:49:42,473 INFO L226 Difference]: Without dead ends: 236366 [2022-12-14 14:49:43,271 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 14:49:43,271 INFO L413 NwaCegarLoop]: 4686 mSDtfsCounter, 2276 mSDsluCounter, 7980 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 345 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 12666 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:49:43,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 12666 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1419 Invalid, 4 Unknown, 0 Unchecked, 26.7s Time] [2022-12-14 14:49:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236366 states. [2022-12-14 14:49:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236366 to 162473. [2022-12-14 14:49:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162473 states, 109952 states have (on average 1.3598752182770664) internal successors, (149521), 111229 states have internal predecessors, (149521), 42440 states have call successors, (42440), 10189 states have call predecessors, (42440), 10080 states have return successors, (42516), 42090 states have call predecessors, (42516), 42432 states have call successors, (42516) [2022-12-14 14:49:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162473 states to 162473 states and 234477 transitions. [2022-12-14 14:49:51,466 INFO L78 Accepts]: Start accepts. Automaton has 162473 states and 234477 transitions. Word has length 535 [2022-12-14 14:49:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:49:51,466 INFO L495 AbstractCegarLoop]: Abstraction has 162473 states and 234477 transitions. [2022-12-14 14:49:51,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-12-14 14:49:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 162473 states and 234477 transitions. [2022-12-14 14:49:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-12-14 14:49:51,484 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:49:51,484 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:49:51,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 14:49:51,484 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:49:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:49:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1548395795, now seen corresponding path program 1 times [2022-12-14 14:49:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:49:51,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840606567] [2022-12-14 14:49:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:49:51,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:49:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:49:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3503 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2022-12-14 14:49:51,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:49:51,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840606567] [2022-12-14 14:49:51,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840606567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:51,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:49:51,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:49:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654511051] [2022-12-14 14:49:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:51,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:49:51,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:49:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:49:51,940 INFO L87 Difference]: Start difference. First operand 162473 states and 234477 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-12-14 14:49:57,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:49:59,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:50:03,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:50:05,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:50:10,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:50:15,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:50:17,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:50:20,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:50:20,187 INFO L93 Difference]: Finished difference Result 256107 states and 374127 transitions. [2022-12-14 14:50:20,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:50:20,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 538 [2022-12-14 14:50:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:50:21,039 INFO L225 Difference]: With dead ends: 256107 [2022-12-14 14:50:21,040 INFO L226 Difference]: Without dead ends: 188104 [2022-12-14 14:50:21,332 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 14:50:21,333 INFO L413 NwaCegarLoop]: 3951 mSDtfsCounter, 671 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 7157 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:50:21,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 7157 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 834 Invalid, 5 Unknown, 0 Unchecked, 21.7s Time] [2022-12-14 14:50:21,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188104 states. [2022-12-14 14:50:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188104 to 162475. [2022-12-14 14:50:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162475 states, 109954 states have (on average 1.3598686723538935) internal successors, (149523), 111231 states have internal predecessors, (149523), 42440 states have call successors, (42440), 10189 states have call predecessors, (42440), 10080 states have return successors, (42516), 42090 states have call predecessors, (42516), 42432 states have call successors, (42516) [2022-12-14 14:50:28,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162475 states to 162475 states and 234479 transitions. [2022-12-14 14:50:28,294 INFO L78 Accepts]: Start accepts. Automaton has 162475 states and 234479 transitions. Word has length 538 [2022-12-14 14:50:28,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:50:28,294 INFO L495 AbstractCegarLoop]: Abstraction has 162475 states and 234479 transitions. [2022-12-14 14:50:28,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-12-14 14:50:28,294 INFO L276 IsEmpty]: Start isEmpty. Operand 162475 states and 234479 transitions. [2022-12-14 14:50:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-12-14 14:50:28,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:50:28,313 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:50:28,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 14:50:28,313 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:50:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:50:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash -313149225, now seen corresponding path program 1 times [2022-12-14 14:50:28,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:50:28,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682562500] [2022-12-14 14:50:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:28,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:50:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3505 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3492 trivial. 0 not checked. [2022-12-14 14:50:28,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:50:28,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682562500] [2022-12-14 14:50:28,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682562500] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:50:28,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957228507] [2022-12-14 14:50:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:28,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:50:28,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:50:28,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:50:28,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:50:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:30,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 6327 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:50:30,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:50:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3505 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 3255 trivial. 0 not checked. [2022-12-14 14:50:30,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:50:30,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957228507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:50:30,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:50:30,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 14:50:30,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573540881] [2022-12-14 14:50:30,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:50:30,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:50:30,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:50:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:50:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:50:30,692 INFO L87 Difference]: Start difference. First operand 162475 states and 234479 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-12-14 14:50:31,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:50:34,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:50:37,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:50:39,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:50:41,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:50:44,882 WARN L539 Checker$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 14:50:48,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:50:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:50:52,957 INFO L93 Difference]: Finished difference Result 231393 states and 333924 transitions. [2022-12-14 14:50:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:50:52,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 540 [2022-12-14 14:50:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:50:53,727 INFO L225 Difference]: With dead ends: 231393 [2022-12-14 14:50:53,727 INFO L226 Difference]: Without dead ends: 163388 [2022-12-14 14:50:54,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:50:54,088 INFO L413 NwaCegarLoop]: 3119 mSDtfsCounter, 471 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 12 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 6001 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:50:54,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 6001 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 764 Invalid, 5 Unknown, 0 Unchecked, 17.0s Time] [2022-12-14 14:50:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163388 states. [2022-12-14 14:51:00,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163388 to 163143. [2022-12-14 14:51:00,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163143 states, 110473 states have (on average 1.3603685968517194) internal successors, (150284), 111754 states have internal predecessors, (150284), 42545 states have call successors, (42545), 10233 states have call predecessors, (42545), 10124 states have return successors, (42621), 42194 states have call predecessors, (42621), 42537 states have call successors, (42621) [2022-12-14 14:51:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163143 states to 163143 states and 235450 transitions. [2022-12-14 14:51:01,190 INFO L78 Accepts]: Start accepts. Automaton has 163143 states and 235450 transitions. Word has length 540 [2022-12-14 14:51:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:51:01,191 INFO L495 AbstractCegarLoop]: Abstraction has 163143 states and 235450 transitions. [2022-12-14 14:51:01,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-12-14 14:51:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 163143 states and 235450 transitions. [2022-12-14 14:51:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2022-12-14 14:51:01,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:51:01,220 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:51:01,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 14:51:01,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 14:51:01,422 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:51:01,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:51:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash -348356826, now seen corresponding path program 1 times [2022-12-14 14:51:01,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:51:01,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129539279] [2022-12-14 14:51:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:51:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:51:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:51:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3988 trivial. 0 not checked. [2022-12-14 14:51:03,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:51:03,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129539279] [2022-12-14 14:51:03,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129539279] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:51:03,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524791318] [2022-12-14 14:51:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:51:03,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:51:03,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:51:03,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:51:03,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:51:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:51:04,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 14:51:04,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:51:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 764 proven. 0 refuted. 0 times theorem prover too weak. 3238 trivial. 0 not checked. [2022-12-14 14:51:04,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:51:04,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524791318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:51:04,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:51:04,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-14 14:51:04,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084977859] [2022-12-14 14:51:04,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:51:04,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:51:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:51:04,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:51:04,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:51:04,790 INFO L87 Difference]: Start difference. First operand 163143 states and 235450 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2022-12-14 14:51:06,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:51:08,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:51:12,539 WARN L539 Checker$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 14:51:16,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:51:18,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:51:21,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:51:26,582 WARN L539 Checker$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 14:51:27,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:51:29,800 WARN L539 Checker$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 14:51:35,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:51:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:51:42,061 INFO L93 Difference]: Finished difference Result 335311 states and 484735 transitions. [2022-12-14 14:51:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:51:42,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 537 [2022-12-14 14:51:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:51:42,983 INFO L225 Difference]: With dead ends: 335311 [2022-12-14 14:51:42,983 INFO L226 Difference]: Without dead ends: 172342 [2022-12-14 14:51:43,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:51:43,552 INFO L413 NwaCegarLoop]: 3886 mSDtfsCounter, 2876 mSDsluCounter, 7984 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 109 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2878 SdHoareTripleChecker+Valid, 11870 SdHoareTripleChecker+Invalid, 3710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:51:43,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2878 Valid, 11870 Invalid, 3710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 3597 Invalid, 4 Unknown, 0 Unchecked, 30.4s Time] [2022-12-14 14:51:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172342 states. [2022-12-14 14:51:49,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172342 to 167946. [2022-12-14 14:51:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167946 states, 114232 states have (on average 1.3641624063309756) internal successors, (155831), 115528 states have internal predecessors, (155831), 43277 states have call successors, (43277), 10545 states have call predecessors, (43277), 10436 states have return successors, (43353), 42926 states have call predecessors, (43353), 43269 states have call successors, (43353) [2022-12-14 14:51:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167946 states to 167946 states and 242461 transitions. [2022-12-14 14:51:50,798 INFO L78 Accepts]: Start accepts. Automaton has 167946 states and 242461 transitions. Word has length 537 [2022-12-14 14:51:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:51:50,798 INFO L495 AbstractCegarLoop]: Abstraction has 167946 states and 242461 transitions. [2022-12-14 14:51:50,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2022-12-14 14:51:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 167946 states and 242461 transitions. [2022-12-14 14:51:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-12-14 14:51:50,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:51:50,818 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:51:50,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 14:51:51,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 14:51:51,020 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:51:51,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:51:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash -520228501, now seen corresponding path program 1 times [2022-12-14 14:51:51,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:51:51,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798422330] [2022-12-14 14:51:51,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:51:51,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:51:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:51:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3492 trivial. 0 not checked. [2022-12-14 14:51:51,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:51:51,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798422330] [2022-12-14 14:51:51,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798422330] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:51:51,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726062966] [2022-12-14 14:51:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:51:51,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:51:51,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:51:51,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:51:51,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:51:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:51:53,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 6394 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:51:53,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:51:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2022-12-14 14:51:54,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:51:54,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726062966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:51:54,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:51:54,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 14:51:54,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549396144] [2022-12-14 14:51:54,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:51:54,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:51:54,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:51:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:51:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:51:54,491 INFO L87 Difference]: Start difference. First operand 167946 states and 242461 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-12-14 14:51:57,646 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 14:52:00,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:52:03,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:52:04,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:52:11,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:52:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:16,476 INFO L93 Difference]: Finished difference Result 238422 states and 344213 transitions. [2022-12-14 14:52:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 549 [2022-12-14 14:52:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:17,685 INFO L225 Difference]: With dead ends: 238422 [2022-12-14 14:52:17,685 INFO L226 Difference]: Without dead ends: 238419 [2022-12-14 14:52:17,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:17,790 INFO L413 NwaCegarLoop]: 3645 mSDtfsCounter, 3133 mSDsluCounter, 2922 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3133 SdHoareTripleChecker+Valid, 6567 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:17,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3133 Valid, 6567 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 3 Unknown, 0 Unchecked, 15.0s Time] [2022-12-14 14:52:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238419 states. [2022-12-14 14:52:26,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238419 to 238414. [2022-12-14 14:52:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238414 states, 162211 states have (on average 1.3644142505748684) internal successors, (221323), 164052 states have internal predecessors, (221323), 61384 states have call successors, (61384), 14975 states have call predecessors, (61384), 14818 states have return successors, (61496), 60884 states have call predecessors, (61496), 61376 states have call successors, (61496) [2022-12-14 14:52:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238414 states to 238414 states and 344203 transitions. [2022-12-14 14:52:27,915 INFO L78 Accepts]: Start accepts. Automaton has 238414 states and 344203 transitions. Word has length 549 [2022-12-14 14:52:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:52:27,915 INFO L495 AbstractCegarLoop]: Abstraction has 238414 states and 344203 transitions. [2022-12-14 14:52:27,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-12-14 14:52:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 238414 states and 344203 transitions. [2022-12-14 14:52:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2022-12-14 14:52:27,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:52:27,935 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:52:27,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:52:28,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:52:28,137 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:52:28,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:52:28,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1051761184, now seen corresponding path program 1 times [2022-12-14 14:52:28,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:52:28,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762627370] [2022-12-14 14:52:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:28,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:52:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3492 trivial. 0 not checked. [2022-12-14 14:52:28,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:52:28,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762627370] [2022-12-14 14:52:28,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762627370] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:52:28,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568604049] [2022-12-14 14:52:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:52:28,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:52:28,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:52:28,775 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:52:28,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:52:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:52:30,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 6396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:52:30,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:52:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2022-12-14 14:52:31,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:52:31,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568604049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:52:31,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:52:31,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 14:52:31,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063228955] [2022-12-14 14:52:31,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:52:31,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:52:31,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:52:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:52:31,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:31,223 INFO L87 Difference]: Start difference. First operand 238414 states and 344203 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-12-14 14:52:32,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:52:35,345 WARN L539 Checker$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 14:52:38,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:52:41,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:52:42,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:52:48,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:52:50,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:52:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:52:55,428 INFO L93 Difference]: Finished difference Result 238426 states and 344217 transitions. [2022-12-14 14:52:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:52:55,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 550 [2022-12-14 14:52:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:52:56,651 INFO L225 Difference]: With dead ends: 238426 [2022-12-14 14:52:56,651 INFO L226 Difference]: Without dead ends: 238423 [2022-12-14 14:52:56,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:52:56,767 INFO L413 NwaCegarLoop]: 3645 mSDtfsCounter, 3130 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3130 SdHoareTripleChecker+Valid, 6570 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:52:56,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3130 Valid, 6570 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 738 Invalid, 3 Unknown, 0 Unchecked, 17.2s Time] [2022-12-14 14:52:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238423 states. [2022-12-14 14:53:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238423 to 238418. [2022-12-14 14:53:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238418 states, 162215 states have (on average 1.3644052646179454) internal successors, (221327), 164056 states have internal predecessors, (221327), 61384 states have call successors, (61384), 14975 states have call predecessors, (61384), 14818 states have return successors, (61496), 60884 states have call predecessors, (61496), 61376 states have call successors, (61496) [2022-12-14 14:53:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238418 states to 238418 states and 344207 transitions. [2022-12-14 14:53:07,556 INFO L78 Accepts]: Start accepts. Automaton has 238418 states and 344207 transitions. Word has length 550 [2022-12-14 14:53:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:53:07,557 INFO L495 AbstractCegarLoop]: Abstraction has 238418 states and 344207 transitions. [2022-12-14 14:53:07,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-12-14 14:53:07,557 INFO L276 IsEmpty]: Start isEmpty. Operand 238418 states and 344207 transitions. [2022-12-14 14:53:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2022-12-14 14:53:07,576 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:53:07,577 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:53:07,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:53:07,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-14 14:53:07,779 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:53:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:53:07,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1756161266, now seen corresponding path program 1 times [2022-12-14 14:53:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:53:07,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029355274] [2022-12-14 14:53:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:07,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:53:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3492 trivial. 0 not checked. [2022-12-14 14:53:08,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:53:08,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029355274] [2022-12-14 14:53:08,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029355274] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:53:08,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892626142] [2022-12-14 14:53:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:08,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:53:08,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:53:08,562 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:53:08,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:53:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:10,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 6398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:53:10,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:53:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2022-12-14 14:53:11,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:53:11,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892626142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:53:11,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:53:11,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 14:53:11,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882329329] [2022-12-14 14:53:11,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:53:11,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:53:11,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:53:11,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:53:11,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:53:11,182 INFO L87 Difference]: Start difference. First operand 238418 states and 344207 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-12-14 14:53:15,109 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 14:53:18,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:53:21,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:53:23,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:53:29,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:53:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:53:35,528 INFO L93 Difference]: Finished difference Result 276651 states and 399172 transitions. [2022-12-14 14:53:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:53:35,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 551 [2022-12-14 14:53:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:53:36,950 INFO L225 Difference]: With dead ends: 276651 [2022-12-14 14:53:36,950 INFO L226 Difference]: Without dead ends: 276647 [2022-12-14 14:53:37,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:53:37,085 INFO L413 NwaCegarLoop]: 4126 mSDtfsCounter, 2228 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 7028 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:53:37,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2228 Valid, 7028 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 815 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2022-12-14 14:53:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276647 states. [2022-12-14 14:53:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276647 to 275118. [2022-12-14 14:53:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275118 states, 187443 states have (on average 1.3657538558388416) internal successors, (256001), 189608 states have internal predecessors, (256001), 70598 states have call successors, (70598), 17263 states have call predecessors, (70598), 17076 states have return successors, (70734), 69978 states have call predecessors, (70734), 70590 states have call successors, (70734) [2022-12-14 14:53:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275118 states to 275118 states and 397333 transitions. [2022-12-14 14:53:49,466 INFO L78 Accepts]: Start accepts. Automaton has 275118 states and 397333 transitions. Word has length 551 [2022-12-14 14:53:49,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:53:49,467 INFO L495 AbstractCegarLoop]: Abstraction has 275118 states and 397333 transitions. [2022-12-14 14:53:49,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-12-14 14:53:49,467 INFO L276 IsEmpty]: Start isEmpty. Operand 275118 states and 397333 transitions. [2022-12-14 14:53:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-12-14 14:53:49,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:53:49,488 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:53:49,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 14:53:49,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 14:53:49,690 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:53:49,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:53:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1392560867, now seen corresponding path program 1 times [2022-12-14 14:53:49,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:53:49,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516497576] [2022-12-14 14:53:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:49,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:53:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3492 trivial. 0 not checked. [2022-12-14 14:53:50,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:53:50,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516497576] [2022-12-14 14:53:50,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516497576] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:53:50,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104910561] [2022-12-14 14:53:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:53:50,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:53:50,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:53:50,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:53:50,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:53:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:53:52,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 6400 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:53:52,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:53:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2022-12-14 14:53:53,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:53:53,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104910561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:53:53,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:53:53,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 14:53:53,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438053150] [2022-12-14 14:53:53,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:53:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:53:53,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:53:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:53:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:53:53,264 INFO L87 Difference]: Start difference. First operand 275118 states and 397333 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-12-14 14:53:56,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:53:59,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:54:06,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:54:09,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:54:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:54:17,599 INFO L93 Difference]: Finished difference Result 275134 states and 397350 transitions. [2022-12-14 14:54:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:54:17,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 552 [2022-12-14 14:54:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:54:19,204 INFO L225 Difference]: With dead ends: 275134 [2022-12-14 14:54:19,204 INFO L226 Difference]: Without dead ends: 274926 [2022-12-14 14:54:19,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:54:19,394 INFO L413 NwaCegarLoop]: 3619 mSDtfsCounter, 3126 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3126 SdHoareTripleChecker+Valid, 6550 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:54:19,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3126 Valid, 6550 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 4 Unknown, 0 Unchecked, 15.6s Time] [2022-12-14 14:54:19,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274926 states. [2022-12-14 14:54:30,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274926 to 274856. [2022-12-14 14:54:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274856 states, 187295 states have (on average 1.3655943831922903) internal successors, (255769), 189444 states have internal predecessors, (255769), 70520 states have call successors, (70520), 17227 states have call predecessors, (70520), 17040 states have return successors, (70656), 69906 states have call predecessors, (70656), 70512 states have call successors, (70656) [2022-12-14 14:54:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274856 states to 274856 states and 396945 transitions. [2022-12-14 14:54:32,584 INFO L78 Accepts]: Start accepts. Automaton has 274856 states and 396945 transitions. Word has length 552 [2022-12-14 14:54:32,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:54:32,585 INFO L495 AbstractCegarLoop]: Abstraction has 274856 states and 396945 transitions. [2022-12-14 14:54:32,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-12-14 14:54:32,585 INFO L276 IsEmpty]: Start isEmpty. Operand 274856 states and 396945 transitions. [2022-12-14 14:54:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-12-14 14:54:32,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:54:32,605 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:54:32,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 14:54:32,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:54:32,807 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:54:32,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:54:32,809 INFO L85 PathProgramCache]: Analyzing trace with hash 218704049, now seen corresponding path program 1 times [2022-12-14 14:54:32,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:54:32,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495930166] [2022-12-14 14:54:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:32,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:54:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 3492 trivial. 0 not checked. [2022-12-14 14:54:33,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:54:33,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495930166] [2022-12-14 14:54:33,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495930166] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:54:33,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095893039] [2022-12-14 14:54:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:33,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:54:33,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:54:33,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:54:33,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181b697a-0484-49ab-998a-749ec61dca0c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 14:54:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:35,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 6402 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:54:35,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:54:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2022-12-14 14:54:36,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:54:36,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095893039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:54:36,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:54:36,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 14:54:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477660641] [2022-12-14 14:54:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:54:36,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:54:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:54:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:54:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:54:36,051 INFO L87 Difference]: Start difference. First operand 274856 states and 396945 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2022-12-14 14:54:37,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:54:40,170 WARN L539 Checker$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 14:54:43,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:54:45,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:54:46,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 14:54:48,254 WARN L539 Checker$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 14:54:53,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 14:55:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:55:01,102 INFO L93 Difference]: Finished difference Result 311524 states and 449881 transitions. [2022-12-14 14:55:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:55:01,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 553 [2022-12-14 14:55:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:55:02,702 INFO L225 Difference]: With dead ends: 311524 [2022-12-14 14:55:02,702 INFO L226 Difference]: Without dead ends: 311314 [2022-12-14 14:55:02,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:55:02,824 INFO L413 NwaCegarLoop]: 3424 mSDtfsCounter, 2050 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 6341 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:55:02,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 6341 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 732 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time] [2022-12-14 14:55:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311314 states. [2022-12-14 14:55:14,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311314 to 310993. [2022-12-14 14:55:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310993 states, 212135 states have (on average 1.366031065123624) internal successors, (289783), 214570 states have internal predecessors, (289783), 79597 states have call successors, (79597), 19450 states have call predecessors, (79597), 19260 states have return successors, (79757), 78908 states have call predecessors, (79757), 79589 states have call successors, (79757)