./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:21:22,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:21:22,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:21:22,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:21:22,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:21:22,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:21:22,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:21:22,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:21:22,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:21:22,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:21:22,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:21:22,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:21:22,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:21:22,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:21:22,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:21:22,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:21:22,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:21:22,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:21:22,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:21:22,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:21:22,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:21:22,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:21:22,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:21:22,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:21:22,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:21:22,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:21:22,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:21:22,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:21:22,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:21:22,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:21:22,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:21:22,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:21:22,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:21:22,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:21:22,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:21:22,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:21:22,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:21:22,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:21:22,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:21:22,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:21:22,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:21:22,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:21:22,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:21:22,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:21:22,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:21:22,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:21:22,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:21:22,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:21:22,498 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:21:22,499 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:21:22,499 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:21:22,499 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:21:22,500 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:21:22,500 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:21:22,501 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:21:22,501 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:21:22,501 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:21:22,501 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:21:22,502 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:21:22,502 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:21:22,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:21:22,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:21:22,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:21:22,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:21:22,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:21:22,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:21:22,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:21:22,505 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:21:22,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:21:22,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:21:22,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:21:22,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:22,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:21:22,507 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:21:22,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:21:22,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:21:22,508 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:21:22,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:21:22,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:21:22,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:21:22,509 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_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2022-11-25 23:21:22,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:21:22,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:21:22,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:21:22,869 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:21:22,869 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:21:22,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-11-25 23:21:26,054 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:21:26,687 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:21:26,687 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-11-25 23:21:26,746 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/data/448e0da20/1dad58d5fce248b3a81c9a85530fb98d/FLAG4572ae94f [2022-11-25 23:21:26,768 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/data/448e0da20/1dad58d5fce248b3a81c9a85530fb98d [2022-11-25 23:21:26,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:21:26,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:21:26,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:26,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:21:26,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:21:26,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:26" (1/1) ... [2022-11-25 23:21:26,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcb2af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:26, skipping insertion in model container [2022-11-25 23:21:26,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:26" (1/1) ... [2022-11-25 23:21:26,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:21:26,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:21:27,521 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 23:21:27,610 WARN L623 FunctionHandler]: Unknown extern function __xadd_wrong_size [2022-11-25 23:21:27,827 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 23:21:27,856 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 23:21:27,864 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 23:21:27,889 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-11-25 23:21:27,927 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-11-25 23:21:27,928 WARN L623 FunctionHandler]: Unknown extern function rcu_is_cpu_idle [2022-11-25 23:21:27,929 WARN L623 FunctionHandler]: Unknown extern function rcu_lockdep_current_cpu_online [2022-11-25 23:21:27,930 WARN L623 FunctionHandler]: Unknown extern function lock_is_held [2022-11-25 23:21:27,946 WARN L623 FunctionHandler]: Unknown extern function alloc_pages_current [2022-11-25 23:21:27,986 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:21:28,000 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:21:28,253 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 23:21:28,254 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-11-25 23:21:28,256 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-11-25 23:21:28,258 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-11-25 23:21:28,269 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 23:21:28,270 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-11-25 23:21:28,398 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-11-25 23:21:28,407 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-11-25 23:21:28,408 WARN L623 FunctionHandler]: Unknown extern function idr_find_slowpath [2022-11-25 23:21:28,580 WARN L623 FunctionHandler]: Unknown extern function scsi_device_get [2022-11-25 23:21:28,592 WARN L623 FunctionHandler]: Unknown extern function scsi_device_put [2022-11-25 23:21:28,608 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-11-25 23:21:28,609 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-11-25 23:21:28,610 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-11-25 23:21:28,630 WARN L623 FunctionHandler]: Unknown extern function scsi_normalize_sense [2022-11-25 23:21:28,631 WARN L623 FunctionHandler]: Unknown extern function scsi_get_sense_info_fld [2022-11-25 23:21:28,634 WARN L623 FunctionHandler]: Unknown extern function scsi_sense_desc_find [2022-11-25 23:21:28,653 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,657 WARN L623 FunctionHandler]: Unknown extern function __scsi_print_sense [2022-11-25 23:21:28,675 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:28,681 WARN L623 FunctionHandler]: Unknown extern function complete [2022-11-25 23:21:28,682 WARN L623 FunctionHandler]: Unknown extern function blk_rq_unmap_user [2022-11-25 23:21:28,682 WARN L623 FunctionHandler]: Unknown extern function __blk_put_request [2022-11-25 23:21:28,688 WARN L623 FunctionHandler]: Unknown extern function blk_get_request [2022-11-25 23:21:28,690 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_user [2022-11-25 23:21:28,691 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-11-25 23:21:28,700 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq_nowait [2022-11-25 23:21:28,709 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,723 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion [2022-11-25 23:21:28,732 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion [2022-11-25 23:21:28,749 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,773 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,800 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,807 WARN L623 FunctionHandler]: Unknown extern function scsi_ioctl [2022-11-25 23:21:28,821 WARN L623 FunctionHandler]: Unknown extern function msleep_interruptible [2022-11-25 23:21:28,852 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,863 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,868 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,880 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_get_device [2022-11-25 23:21:28,881 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-11-25 23:21:28,885 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,888 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_put_device [2022-11-25 23:21:28,905 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,918 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_put_device [2022-11-25 23:21:28,923 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-11-25 23:21:28,957 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,968 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:28,975 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,000 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,002 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,039 WARN L623 FunctionHandler]: Unknown extern function blk_queue_rq_timeout [2022-11-25 23:21:29,040 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,066 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:21:29,078 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,132 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,138 WARN L623 FunctionHandler]: Unknown extern function scsi_nonblockable_ioctl [2022-11-25 23:21:29,139 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-11-25 23:21:29,141 WARN L623 FunctionHandler]: Unknown extern function capable [2022-11-25 23:21:29,141 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,156 WARN L623 FunctionHandler]: Unknown extern function capable [2022-11-25 23:21:29,157 WARN L623 FunctionHandler]: Unknown extern function scsi_cmd_ioctl [2022-11-25 23:21:29,157 WARN L623 FunctionHandler]: Unknown extern function scsi_cmd_ioctl [2022-11-25 23:21:29,158 WARN L623 FunctionHandler]: Unknown extern function scsi_ioctl [2022-11-25 23:21:29,168 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,169 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:29,173 WARN L623 FunctionHandler]: Unknown extern function __free_pages [2022-11-25 23:21:29,175 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,177 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,201 WARN L623 FunctionHandler]: Unknown extern function cdev_alloc [2022-11-25 23:21:29,201 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,202 WARN L623 FunctionHandler]: Unknown extern function cdev_add [2022-11-25 23:21:29,203 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,206 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,208 WARN L623 FunctionHandler]: Unknown extern function device_create [2022-11-25 23:21:29,209 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,210 WARN L623 FunctionHandler]: Unknown extern function cdev_del [2022-11-25 23:21:29,215 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_link [2022-11-25 23:21:29,221 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_link [2022-11-25 23:21:29,223 WARN L623 FunctionHandler]: Unknown extern function cdev_del [2022-11-25 23:21:29,223 WARN L623 FunctionHandler]: Unknown extern function device_unregister [2022-11-25 23:21:29,225 WARN L623 FunctionHandler]: Unknown extern function dev_printk [2022-11-25 23:21:29,226 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,227 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,227 WARN L623 FunctionHandler]: Unknown extern function alloc_disk [2022-11-25 23:21:29,228 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,228 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,229 WARN L623 FunctionHandler]: Unknown extern function blk_get_queue [2022-11-25 23:21:29,230 WARN L623 FunctionHandler]: Unknown extern function blk_queue_rq_timeout [2022-11-25 23:21:29,232 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-11-25 23:21:29,233 WARN L623 FunctionHandler]: Unknown extern function idr_preload [2022-11-25 23:21:29,233 WARN L623 FunctionHandler]: Unknown extern function idr_alloc [2022-11-25 23:21:29,233 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,234 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 23:21:29,234 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-25 23:21:29,236 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_put_device [2022-11-25 23:21:29,236 WARN L623 FunctionHandler]: Unknown extern function dev_printk [2022-11-25 23:21:29,237 WARN L623 FunctionHandler]: Unknown extern function dev_printk [2022-11-25 23:21:29,240 WARN L623 FunctionHandler]: Unknown extern function idr_remove [2022-11-25 23:21:29,241 WARN L623 FunctionHandler]: Unknown extern function blk_put_queue [2022-11-25 23:21:29,241 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-11-25 23:21:29,241 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:29,241 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:29,242 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:29,243 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_get_device [2022-11-25 23:21:29,244 WARN L623 FunctionHandler]: Unknown extern function idr_remove [2022-11-25 23:21:29,245 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:29,246 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:29,246 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-11-25 23:21:29,246 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:29,251 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,252 WARN L623 FunctionHandler]: Unknown extern function __class_register [2022-11-25 23:21:29,252 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,254 WARN L623 FunctionHandler]: Unknown extern function register_chrdev_region [2022-11-25 23:21:29,254 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,255 WARN L623 FunctionHandler]: Unknown extern function scsi_register_driver [2022-11-25 23:21:29,256 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-11-25 23:21:29,256 WARN L623 FunctionHandler]: Unknown extern function unregister_chrdev_region [2022-11-25 23:21:29,256 WARN L623 FunctionHandler]: Unknown extern function class_unregister [2022-11-25 23:21:29,260 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-11-25 23:21:29,261 WARN L623 FunctionHandler]: Unknown extern function unregister_chrdev_region [2022-11-25 23:21:29,261 WARN L623 FunctionHandler]: Unknown extern function class_unregister [2022-11-25 23:21:29,261 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,293 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-11-25 23:21:29,297 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-11-25 23:21:29,298 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-11-25 23:21:29,298 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-11-25 23:21:29,299 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:29,299 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:29,300 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:29,300 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:29,301 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:29,302 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:29,308 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:29,313 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:29,319 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:29,325 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:29,332 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:29,337 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:29,349 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-11-25 23:21:29,350 WARN L623 FunctionHandler]: Unknown extern function get_user_pages [2022-11-25 23:21:29,351 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-11-25 23:21:29,352 WARN L623 FunctionHandler]: Unknown extern function put_page [2022-11-25 23:21:29,358 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:29,359 WARN L623 FunctionHandler]: Unknown extern function put_page [2022-11-25 23:21:29,360 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:29,390 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,391 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:21:29,391 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value_probe [2022-11-25 23:21:29,391 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,392 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,392 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:21:29,393 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,393 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:21:29,394 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,395 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:21:29,395 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,396 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,396 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,396 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,397 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:29,397 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:29,398 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:29,398 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:29,398 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-11-25 23:21:29,399 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:29,399 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:29,399 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:29,400 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:29,400 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:29,400 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-11-25 23:21:29,401 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:29,402 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-11-25 23:21:29,403 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:29,403 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-11-25 23:21:29,403 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:29,405 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:29,405 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:29,406 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:29,410 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_b77c96e3-4bb1-407c-9fda-8d856bb91787/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2022-11-25 23:21:29,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:29,560 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:21:29,653 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 23:21:29,656 WARN L623 FunctionHandler]: Unknown extern function __xadd_wrong_size [2022-11-25 23:21:29,658 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 23:21:29,659 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 23:21:29,659 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 23:21:29,668 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-11-25 23:21:29,670 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-11-25 23:21:29,671 WARN L623 FunctionHandler]: Unknown extern function rcu_is_cpu_idle [2022-11-25 23:21:29,671 WARN L623 FunctionHandler]: Unknown extern function rcu_lockdep_current_cpu_online [2022-11-25 23:21:29,672 WARN L623 FunctionHandler]: Unknown extern function lock_is_held [2022-11-25 23:21:29,672 WARN L623 FunctionHandler]: Unknown extern function alloc_pages_current [2022-11-25 23:21:29,673 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:21:29,674 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:21:29,683 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 23:21:29,683 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-11-25 23:21:29,684 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-11-25 23:21:29,684 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-11-25 23:21:29,685 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 23:21:29,685 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-11-25 23:21:29,687 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-11-25 23:21:29,688 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-11-25 23:21:29,688 WARN L623 FunctionHandler]: Unknown extern function idr_find_slowpath [2022-11-25 23:21:29,697 WARN L623 FunctionHandler]: Unknown extern function scsi_device_get [2022-11-25 23:21:29,699 WARN L623 FunctionHandler]: Unknown extern function scsi_device_put [2022-11-25 23:21:29,704 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-11-25 23:21:29,707 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-11-25 23:21:29,708 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-11-25 23:21:29,709 WARN L623 FunctionHandler]: Unknown extern function scsi_normalize_sense [2022-11-25 23:21:29,710 WARN L623 FunctionHandler]: Unknown extern function scsi_get_sense_info_fld [2022-11-25 23:21:29,711 WARN L623 FunctionHandler]: Unknown extern function scsi_sense_desc_find [2022-11-25 23:21:29,712 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,713 WARN L623 FunctionHandler]: Unknown extern function __scsi_print_sense [2022-11-25 23:21:29,722 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:29,726 WARN L623 FunctionHandler]: Unknown extern function complete [2022-11-25 23:21:29,726 WARN L623 FunctionHandler]: Unknown extern function blk_rq_unmap_user [2022-11-25 23:21:29,727 WARN L623 FunctionHandler]: Unknown extern function __blk_put_request [2022-11-25 23:21:29,734 WARN L623 FunctionHandler]: Unknown extern function blk_get_request [2022-11-25 23:21:29,741 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_user [2022-11-25 23:21:29,743 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-11-25 23:21:29,744 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq_nowait [2022-11-25 23:21:29,750 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,752 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion [2022-11-25 23:21:29,753 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion [2022-11-25 23:21:29,756 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,823 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,827 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,828 WARN L623 FunctionHandler]: Unknown extern function scsi_ioctl [2022-11-25 23:21:29,830 WARN L623 FunctionHandler]: Unknown extern function msleep_interruptible [2022-11-25 23:21:29,838 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,840 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,842 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,846 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_get_device [2022-11-25 23:21:29,846 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-11-25 23:21:29,847 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,849 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_put_device [2022-11-25 23:21:29,854 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,857 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_put_device [2022-11-25 23:21:29,857 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-11-25 23:21:29,861 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,863 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,870 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,889 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,890 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,907 WARN L623 FunctionHandler]: Unknown extern function blk_queue_rq_timeout [2022-11-25 23:21:29,908 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,925 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:21:29,950 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,973 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,974 WARN L623 FunctionHandler]: Unknown extern function scsi_nonblockable_ioctl [2022-11-25 23:21:29,975 WARN L623 FunctionHandler]: Unknown extern function scsi_block_when_processing_errors [2022-11-25 23:21:29,976 WARN L623 FunctionHandler]: Unknown extern function capable [2022-11-25 23:21:29,976 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,988 WARN L623 FunctionHandler]: Unknown extern function capable [2022-11-25 23:21:29,989 WARN L623 FunctionHandler]: Unknown extern function scsi_cmd_ioctl [2022-11-25 23:21:29,991 WARN L623 FunctionHandler]: Unknown extern function scsi_cmd_ioctl [2022-11-25 23:21:29,993 WARN L623 FunctionHandler]: Unknown extern function scsi_ioctl [2022-11-25 23:21:29,999 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:29,999 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:30,003 WARN L623 FunctionHandler]: Unknown extern function __free_pages [2022-11-25 23:21:30,005 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,010 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,015 WARN L623 FunctionHandler]: Unknown extern function cdev_alloc [2022-11-25 23:21:30,016 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,016 WARN L623 FunctionHandler]: Unknown extern function cdev_add [2022-11-25 23:21:30,016 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,018 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,019 WARN L623 FunctionHandler]: Unknown extern function device_create [2022-11-25 23:21:30,020 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,023 WARN L623 FunctionHandler]: Unknown extern function cdev_del [2022-11-25 23:21:30,024 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_link [2022-11-25 23:21:30,025 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_link [2022-11-25 23:21:30,026 WARN L623 FunctionHandler]: Unknown extern function cdev_del [2022-11-25 23:21:30,026 WARN L623 FunctionHandler]: Unknown extern function device_unregister [2022-11-25 23:21:30,031 WARN L623 FunctionHandler]: Unknown extern function dev_printk [2022-11-25 23:21:30,032 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,033 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,033 WARN L623 FunctionHandler]: Unknown extern function alloc_disk [2022-11-25 23:21:30,034 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,034 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,037 WARN L623 FunctionHandler]: Unknown extern function blk_get_queue [2022-11-25 23:21:30,040 WARN L623 FunctionHandler]: Unknown extern function blk_queue_rq_timeout [2022-11-25 23:21:30,044 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-11-25 23:21:30,044 WARN L623 FunctionHandler]: Unknown extern function idr_preload [2022-11-25 23:21:30,045 WARN L623 FunctionHandler]: Unknown extern function idr_alloc [2022-11-25 23:21:30,045 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,045 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 23:21:30,046 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-25 23:21:30,046 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_put_device [2022-11-25 23:21:30,046 WARN L623 FunctionHandler]: Unknown extern function dev_printk [2022-11-25 23:21:30,047 WARN L623 FunctionHandler]: Unknown extern function dev_printk [2022-11-25 23:21:30,048 WARN L623 FunctionHandler]: Unknown extern function idr_remove [2022-11-25 23:21:30,048 WARN L623 FunctionHandler]: Unknown extern function blk_put_queue [2022-11-25 23:21:30,050 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-11-25 23:21:30,050 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:30,051 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:30,052 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:30,052 WARN L623 FunctionHandler]: Unknown extern function scsi_autopm_get_device [2022-11-25 23:21:30,052 WARN L623 FunctionHandler]: Unknown extern function idr_remove [2022-11-25 23:21:30,053 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:30,054 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:30,054 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-11-25 23:21:30,054 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:30,055 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,055 WARN L623 FunctionHandler]: Unknown extern function __class_register [2022-11-25 23:21:30,055 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,056 WARN L623 FunctionHandler]: Unknown extern function register_chrdev_region [2022-11-25 23:21:30,056 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,056 WARN L623 FunctionHandler]: Unknown extern function scsi_register_driver [2022-11-25 23:21:30,057 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-11-25 23:21:30,057 WARN L623 FunctionHandler]: Unknown extern function unregister_chrdev_region [2022-11-25 23:21:30,057 WARN L623 FunctionHandler]: Unknown extern function class_unregister [2022-11-25 23:21:30,058 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-11-25 23:21:30,058 WARN L623 FunctionHandler]: Unknown extern function unregister_chrdev_region [2022-11-25 23:21:30,058 WARN L623 FunctionHandler]: Unknown extern function class_unregister [2022-11-25 23:21:30,058 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:21:30,064 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-11-25 23:21:30,065 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-11-25 23:21:30,065 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-11-25 23:21:30,065 WARN L623 FunctionHandler]: Unknown extern function driver_create_file [2022-11-25 23:21:30,066 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:30,070 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:30,070 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:30,071 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:30,071 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:30,071 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:30,072 WARN L623 FunctionHandler]: Unknown extern function driver_remove_file [2022-11-25 23:21:30,072 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:30,073 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:30,074 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:30,075 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:30,076 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:21:30,088 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-11-25 23:21:30,088 WARN L623 FunctionHandler]: Unknown extern function get_user_pages [2022-11-25 23:21:30,089 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-11-25 23:21:30,089 WARN L623 FunctionHandler]: Unknown extern function put_page [2022-11-25 23:21:30,090 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:30,091 WARN L623 FunctionHandler]: Unknown extern function put_page [2022-11-25 23:21:30,091 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:21:30,092 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,092 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:21:30,093 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value_probe [2022-11-25 23:21:30,093 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,093 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,094 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:21:30,094 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,094 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:21:30,095 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,095 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:21:30,095 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,096 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,096 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,096 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,097 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-11-25 23:21:30,097 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:30,097 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:30,098 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:30,098 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-11-25 23:21:30,099 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:30,099 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:30,099 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:30,099 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:30,100 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:30,100 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-11-25 23:21:30,100 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:30,101 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-11-25 23:21:30,101 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:30,102 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-11-25 23:21:30,102 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:30,102 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:30,102 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:21:30,103 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:21:30,103 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_b77c96e3-4bb1-407c-9fda-8d856bb91787/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2022-11-25 23:21:30,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:30,293 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:21:30,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30 WrapperNode [2022-11-25 23:21:30,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:30,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:30,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:21:30,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:21:30,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:30,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:30,697 INFO L138 Inliner]: procedures = 282, calls = 3078, calls flagged for inlining = 129, calls inlined = 120, statements flattened = 6806 [2022-11-25 23:21:30,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:30,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:21:30,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:21:30,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:21:30,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:30,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:30,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:30,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:30,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:31,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:31,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:31,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:31,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:21:31,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:21:31,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:21:31,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:21:31,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (1/1) ... [2022-11-25 23:21:31,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:31,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:31,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:21:31,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:21:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-25 23:21:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-11-25 23:21:31,190 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-11-25 23:21:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 23:21:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 23:21:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure driver_remove_file [2022-11-25 23:21:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_remove_file [2022-11-25 23:21:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure find_partition [2022-11-25 23:21:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure find_partition [2022-11-25 23:21:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-25 23:21:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-25 23:21:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-11-25 23:21:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-11-25 23:21:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-25 23:21:31,192 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-25 23:21:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-25 23:21:31,192 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-25 23:21:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 23:21:31,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 23:21:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2022-11-25 23:21:31,192 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2022-11-25 23:21:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-25 23:21:31,192 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-25 23:21:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-25 23:21:31,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-25 23:21:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-11-25 23:21:31,193 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-11-25 23:21:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-25 23:21:31,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-25 23:21:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 23:21:31,193 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 23:21:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2022-11-25 23:21:31,193 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2022-11-25 23:21:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_rq_timeout [2022-11-25 23:21:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_rq_timeout [2022-11-25 23:21:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode_densblk [2022-11-25 23:21:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode_densblk [2022-11-25 23:21:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-25 23:21:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-25 23:21:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-11-25 23:21:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-11-25 23:21:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:21:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_st_ref_mutex [2022-11-25 23:21:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_st_ref_mutex [2022-11-25 23:21:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure read_mode_page [2022-11-25 23:21:31,195 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mode_page [2022-11-25 23:21:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-11-25 23:21:31,195 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-11-25 23:21:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:21:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-25 23:21:31,195 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-25 23:21:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure st_do_scsi [2022-11-25 23:21:31,195 INFO L138 BoogieDeclarations]: Found implementation of procedure st_do_scsi [2022-11-25 23:21:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-25 23:21:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-25 23:21:31,196 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-25 23:21:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-25 23:21:31,196 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-25 23:21:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-11-25 23:21:31,196 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-11-25 23:21:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:21:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure st_release_request [2022-11-25 23:21:31,196 INFO L138 BoogieDeclarations]: Found implementation of procedure st_release_request [2022-11-25 23:21:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:21:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure remove_cdevs [2022-11-25 23:21:31,197 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_cdevs [2022-11-25 23:21:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-25 23:21:31,197 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-25 23:21:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-25 23:21:31,197 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-25 23:21:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure get_location [2022-11-25 23:21:31,197 INFO L138 BoogieDeclarations]: Found implementation of procedure get_location [2022-11-25 23:21:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure st_compression [2022-11-25 23:21:31,198 INFO L138 BoogieDeclarations]: Found implementation of procedure st_compression [2022-11-25 23:21:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_put_device [2022-11-25 23:21:31,198 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_put_device [2022-11-25 23:21:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-25 23:21:31,198 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-25 23:21:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-25 23:21:31,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-25 23:21:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-25 23:21:31,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-25 23:21:31,199 INFO L130 BoogieDeclarations]: Found specification of procedure check_tape [2022-11-25 23:21:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure check_tape [2022-11-25 23:21:31,199 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-25 23:21:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-25 23:21:31,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-25 23:21:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-25 23:21:31,199 INFO L130 BoogieDeclarations]: Found specification of procedure switch_partition [2022-11-25 23:21:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_partition [2022-11-25 23:21:31,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_scsi_tape [2022-11-25 23:21:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_scsi_tape [2022-11-25 23:21:31,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 23:21:31,200 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-25 23:21:31,200 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-25 23:21:31,200 INFO L130 BoogieDeclarations]: Found specification of procedure setup_buffering [2022-11-25 23:21:31,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_buffering [2022-11-25 23:21:31,200 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-25 23:21:31,200 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-25 23:21:31,200 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tape_put [2022-11-25 23:21:31,200 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tape_put [2022-11-25 23:21:31,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:21:31,201 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2022-11-25 23:21:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2022-11-25 23:21:31,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:21:31,201 INFO L130 BoogieDeclarations]: Found specification of procedure create_one_cdev [2022-11-25 23:21:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure create_one_cdev [2022-11-25 23:21:31,201 INFO L130 BoogieDeclarations]: Found specification of procedure queue_dma_alignment [2022-11-25 23:21:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_dma_alignment [2022-11-25 23:21:31,201 INFO L130 BoogieDeclarations]: Found specification of procedure do_load_unload [2022-11-25 23:21:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure do_load_unload [2022-11-25 23:21:31,201 INFO L130 BoogieDeclarations]: Found specification of procedure st_flush_write_buffer [2022-11-25 23:21:31,202 INFO L138 BoogieDeclarations]: Found implementation of procedure st_flush_write_buffer [2022-11-25 23:21:31,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-25 23:21:31,202 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-25 23:21:31,202 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2022-11-25 23:21:31,202 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2022-11-25 23:21:31,202 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-11-25 23:21:31,202 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-11-25 23:21:31,202 INFO L130 BoogieDeclarations]: Found specification of procedure st_chk_result [2022-11-25 23:21:31,202 INFO L138 BoogieDeclarations]: Found implementation of procedure st_chk_result [2022-11-25 23:21:31,202 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-25 23:21:31,203 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-25 23:21:31,203 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-25 23:21:31,203 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-25 23:21:31,203 INFO L130 BoogieDeclarations]: Found specification of procedure write_behind_check [2022-11-25 23:21:31,203 INFO L138 BoogieDeclarations]: Found implementation of procedure write_behind_check [2022-11-25 23:21:31,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:21:31,203 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-25 23:21:31,203 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-25 23:21:31,203 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-25 23:21:31,203 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-25 23:21:31,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-25 23:21:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-25 23:21:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_st_ref_mutex [2022-11-25 23:21:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_st_ref_mutex [2022-11-25 23:21:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:21:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-25 23:21:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-25 23:21:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:21:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2022-11-25 23:21:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2022-11-25 23:21:31,204 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-25 23:21:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-25 23:21:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:21:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-25 23:21:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure driver_create_file [2022-11-25 23:21:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_create_file [2022-11-25 23:21:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure release_buffering [2022-11-25 23:21:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure release_buffering [2022-11-25 23:21:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-25 23:21:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-25 23:21:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-11-25 23:21:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-11-25 23:21:31,206 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_page [2022-11-25 23:21:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_page [2022-11-25 23:21:31,206 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-25 23:21:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-25 23:21:31,206 INFO L130 BoogieDeclarations]: Found specification of procedure rw_checks [2022-11-25 23:21:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure rw_checks [2022-11-25 23:21:31,206 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-25 23:21:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-25 23:21:31,206 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-25 23:21:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-25 23:21:31,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2022-11-25 23:21:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2022-11-25 23:21:31,207 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-25 23:21:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-25 23:21:31,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:21:31,207 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_get_device [2022-11-25 23:21:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_get_device [2022-11-25 23:21:31,207 INFO L130 BoogieDeclarations]: Found specification of procedure set_location [2022-11-25 23:21:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure set_location [2022-11-25 23:21:31,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:21:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:21:32,208 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:21:32,213 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:21:42,455 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:21:47,314 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:21:47,314 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 23:21:47,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:47 BoogieIcfgContainer [2022-11-25 23:21:47,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:21:47,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:21:47,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:21:47,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:21:47,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:21:26" (1/3) ... [2022-11-25 23:21:47,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4671cd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:47, skipping insertion in model container [2022-11-25 23:21:47,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:30" (2/3) ... [2022-11-25 23:21:47,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4671cd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:47, skipping insertion in model container [2022-11-25 23:21:47,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:47" (3/3) ... [2022-11-25 23:21:47,328 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-11-25 23:21:47,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:21:47,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:21:47,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:21:47,453 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;@305426b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:21:47,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:21:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 1331 states, 906 states have (on average 1.4437086092715232) internal successors, (1308), 928 states have internal predecessors, (1308), 345 states have call successors, (345), 78 states have call predecessors, (345), 78 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) [2022-11-25 23:21:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:21:47,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:47,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:21:47,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:47,481 INFO L85 PathProgramCache]: Analyzing trace with hash 657261941, now seen corresponding path program 1 times [2022-11-25 23:21:47,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:47,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591669456] [2022-11-25 23:21:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:47,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:48,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:48,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591669456] [2022-11-25 23:21:48,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591669456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:21:48,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:21:48,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:21:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348959448] [2022-11-25 23:21:48,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:21:48,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:21:48,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:48,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:21:48,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:21:48,166 INFO L87 Difference]: Start difference. First operand has 1331 states, 906 states have (on average 1.4437086092715232) internal successors, (1308), 928 states have internal predecessors, (1308), 345 states have call successors, (345), 78 states have call predecessors, (345), 78 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:21:50,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:21:52,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:21:55,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:00,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:22:03,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:05,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:07,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:22:11,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:22:12,806 INFO L93 Difference]: Finished difference Result 3867 states and 5830 transitions. [2022-11-25 23:22:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:22:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-25 23:22:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:22:12,853 INFO L225 Difference]: With dead ends: 3867 [2022-11-25 23:22:12,853 INFO L226 Difference]: Without dead ends: 2566 [2022-11-25 23:22:12,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:12,886 INFO L413 NwaCegarLoop]: 2038 mSDtfsCounter, 1896 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 3663 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:22:12,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 3663 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 604 Invalid, 5 Unknown, 0 Unchecked, 24.3s Time] [2022-11-25 23:22:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-11-25 23:22:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2559. [2022-11-25 23:22:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 1753 states have (on average 1.4432401597261837) internal successors, (2530), 1782 states have internal predecessors, (2530), 653 states have call successors, (653), 153 states have call predecessors, (653), 152 states have return successors, (645), 644 states have call predecessors, (645), 645 states have call successors, (645) [2022-11-25 23:22:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3828 transitions. [2022-11-25 23:22:13,149 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3828 transitions. Word has length 12 [2022-11-25 23:22:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:22:13,149 INFO L495 AbstractCegarLoop]: Abstraction has 2559 states and 3828 transitions. [2022-11-25 23:22:13,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:22:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3828 transitions. [2022-11-25 23:22:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 23:22:13,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:22:13,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:22:13,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:22:13,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:22:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:22:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1100431027, now seen corresponding path program 1 times [2022-11-25 23:22:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:22:13,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487600733] [2022-11-25 23:22:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:22:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:13,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:13,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487600733] [2022-11-25 23:22:13,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487600733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:22:13,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:22:13,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:22:13,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528540668] [2022-11-25 23:22:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:22:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:22:13,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:22:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:22:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:13,413 INFO L87 Difference]: Start difference. First operand 2559 states and 3828 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:22:17,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:20,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:22,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:27,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:29,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:31,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:22:35,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:37,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:39,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:40,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:22:41,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:22:43,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:22:45,863 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 [] [2022-11-25 23:22:48,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:22:48,031 INFO L93 Difference]: Finished difference Result 4031 states and 5966 transitions. [2022-11-25 23:22:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:22:48,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-25 23:22:48,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:22:48,067 INFO L225 Difference]: With dead ends: 4031 [2022-11-25 23:22:48,067 INFO L226 Difference]: Without dead ends: 4027 [2022-11-25 23:22:48,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:48,072 INFO L413 NwaCegarLoop]: 2062 mSDtfsCounter, 1144 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 4 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:22:48,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 3654 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 639 Invalid, 9 Unknown, 0 Unchecked, 34.4s Time] [2022-11-25 23:22:48,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4027 states. [2022-11-25 23:22:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4027 to 4020. [2022-11-25 23:22:48,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 2710 states have (on average 1.425830258302583) internal successors, (3864), 2759 states have internal predecessors, (3864), 1041 states have call successors, (1041), 271 states have call predecessors, (1041), 268 states have return successors, (1049), 1024 states have call predecessors, (1049), 1033 states have call successors, (1049) [2022-11-25 23:22:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 5954 transitions. [2022-11-25 23:22:48,278 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 5954 transitions. Word has length 13 [2022-11-25 23:22:48,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:22:48,278 INFO L495 AbstractCegarLoop]: Abstraction has 4020 states and 5954 transitions. [2022-11-25 23:22:48,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:22:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 5954 transitions. [2022-11-25 23:22:48,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:22:48,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:22:48,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:22:48,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:22:48,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:22:48,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:22:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash 245666680, now seen corresponding path program 1 times [2022-11-25 23:22:48,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:22:48,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871207180] [2022-11-25 23:22:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:48,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:22:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:48,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:48,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871207180] [2022-11-25 23:22:48,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871207180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:22:48,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:22:48,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:22:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72349740] [2022-11-25 23:22:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:22:48,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:22:48,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:22:48,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:22:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:48,527 INFO L87 Difference]: Start difference. First operand 4020 states and 5954 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:22:49,955 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 [] [2022-11-25 23:22:53,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:56,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:58,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:22:59,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:02,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:23:04,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:06,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:08,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:23:10,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:15,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:23:17,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:19,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:20,702 INFO L93 Difference]: Finished difference Result 5998 states and 8877 transitions. [2022-11-25 23:23:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:23:20,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-25 23:23:20,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:20,747 INFO L225 Difference]: With dead ends: 5998 [2022-11-25 23:23:20,747 INFO L226 Difference]: Without dead ends: 5995 [2022-11-25 23:23:20,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:23:20,753 INFO L413 NwaCegarLoop]: 2033 mSDtfsCounter, 1897 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:20,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 3664 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 603 Invalid, 6 Unknown, 0 Unchecked, 31.9s Time] [2022-11-25 23:23:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2022-11-25 23:23:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 5987. [2022-11-25 23:23:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5987 states, 4041 states have (on average 1.4261321455085374) internal successors, (5763), 4108 states have internal predecessors, (5763), 1544 states have call successors, (1544), 405 states have call predecessors, (1544), 401 states have return successors, (1560), 1523 states have call predecessors, (1560), 1536 states have call successors, (1560) [2022-11-25 23:23:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5987 states to 5987 states and 8867 transitions. [2022-11-25 23:23:21,135 INFO L78 Accepts]: Start accepts. Automaton has 5987 states and 8867 transitions. Word has length 14 [2022-11-25 23:23:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:21,136 INFO L495 AbstractCegarLoop]: Abstraction has 5987 states and 8867 transitions. [2022-11-25 23:23:21,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:23:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5987 states and 8867 transitions. [2022-11-25 23:23:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 23:23:21,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:21,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:21,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:23:21,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:23:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:21,139 INFO L85 PathProgramCache]: Analyzing trace with hash -974972496, now seen corresponding path program 1 times [2022-11-25 23:23:21,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:21,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286806046] [2022-11-25 23:23:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:21,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:21,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:21,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286806046] [2022-11-25 23:23:21,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286806046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:21,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:23:21,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:23:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405243335] [2022-11-25 23:23:21,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:21,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:23:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:21,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:23:21,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:23:21,468 INFO L87 Difference]: Start difference. First operand 5987 states and 8867 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:23:26,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:29,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:31,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:33,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:23:37,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:39,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:43,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:23:47,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:48,796 INFO L93 Difference]: Finished difference Result 9219 states and 13605 transitions. [2022-11-25 23:23:48,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:23:48,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-25 23:23:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:48,844 INFO L225 Difference]: With dead ends: 9219 [2022-11-25 23:23:48,844 INFO L226 Difference]: Without dead ends: 9199 [2022-11-25 23:23:48,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:23:48,851 INFO L413 NwaCegarLoop]: 1942 mSDtfsCounter, 1769 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 3494 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:48,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 3494 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 599 Invalid, 6 Unknown, 0 Unchecked, 26.9s Time] [2022-11-25 23:23:48,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9199 states. [2022-11-25 23:23:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9199 to 9190. [2022-11-25 23:23:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9190 states, 6259 states have (on average 1.4294615753315225) internal successors, (8947), 6360 states have internal predecessors, (8947), 2290 states have call successors, (2290), 654 states have call predecessors, (2290), 640 states have return successors, (2318), 2243 states have call predecessors, (2318), 2282 states have call successors, (2318) [2022-11-25 23:23:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9190 states to 9190 states and 13555 transitions. [2022-11-25 23:23:49,347 INFO L78 Accepts]: Start accepts. Automaton has 9190 states and 13555 transitions. Word has length 15 [2022-11-25 23:23:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:49,348 INFO L495 AbstractCegarLoop]: Abstraction has 9190 states and 13555 transitions. [2022-11-25 23:23:49,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:23:49,349 INFO L276 IsEmpty]: Start isEmpty. Operand 9190 states and 13555 transitions. [2022-11-25 23:23:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 23:23:49,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:49,361 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:23:49,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:23:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash 517399103, now seen corresponding path program 1 times [2022-11-25 23:23:49,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:49,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004115421] [2022-11-25 23:23:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:49,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:23:49,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:49,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004115421] [2022-11-25 23:23:49,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004115421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:49,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:23:49,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:23:49,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156155414] [2022-11-25 23:23:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:49,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:23:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:23:49,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:23:49,753 INFO L87 Difference]: Start difference. First operand 9190 states and 13555 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:23:52,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:55,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:23:59,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:06,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:24:10,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:12,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:15,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:24:17,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:24:21,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:22,218 INFO L93 Difference]: Finished difference Result 18342 states and 27058 transitions. [2022-11-25 23:24:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:24:22,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2022-11-25 23:24:22,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:22,277 INFO L225 Difference]: With dead ends: 18342 [2022-11-25 23:24:22,277 INFO L226 Difference]: Without dead ends: 9190 [2022-11-25 23:24:22,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:24:22,326 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1 mSDsluCounter, 3354 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5033 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:22,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5033 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 906 Invalid, 8 Unknown, 0 Unchecked, 32.1s Time] [2022-11-25 23:24:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9190 states. [2022-11-25 23:24:22,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9190 to 9190. [2022-11-25 23:24:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9190 states, 6259 states have (on average 1.4293018054002238) internal successors, (8946), 6360 states have internal predecessors, (8946), 2290 states have call successors, (2290), 654 states have call predecessors, (2290), 640 states have return successors, (2318), 2243 states have call predecessors, (2318), 2282 states have call successors, (2318) [2022-11-25 23:24:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9190 states to 9190 states and 13554 transitions. [2022-11-25 23:24:22,868 INFO L78 Accepts]: Start accepts. Automaton has 9190 states and 13554 transitions. Word has length 47 [2022-11-25 23:24:22,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:22,869 INFO L495 AbstractCegarLoop]: Abstraction has 9190 states and 13554 transitions. [2022-11-25 23:24:22,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:24:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 9190 states and 13554 transitions. [2022-11-25 23:24:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:24:22,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:22,876 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:24:22,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:24:22,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash -402255713, now seen corresponding path program 1 times [2022-11-25 23:24:22,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:22,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961783400] [2022-11-25 23:24:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:24:23,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:23,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961783400] [2022-11-25 23:24:23,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961783400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:23,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:23,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:24:23,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657459180] [2022-11-25 23:24:23,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:23,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:24:23,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:24:23,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:24:23,772 INFO L87 Difference]: Start difference. First operand 9190 states and 13554 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:24:29,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:32,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:37,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:24:39,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:43,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:45,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:48,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:24:55,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:24:57,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:24:59,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:25:02,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:25:05,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:25:09,746 INFO L93 Difference]: Finished difference Result 12145 states and 17982 transitions. [2022-11-25 23:25:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:25:09,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2022-11-25 23:25:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:25:09,810 INFO L225 Difference]: With dead ends: 12145 [2022-11-25 23:25:09,811 INFO L226 Difference]: Without dead ends: 12142 [2022-11-25 23:25:09,819 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 [2022-11-25 23:25:09,820 INFO L413 NwaCegarLoop]: 2408 mSDtfsCounter, 2148 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 513 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 7142 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:25:09,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2253 Valid, 7142 Invalid, 2322 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [513 Valid, 1801 Invalid, 8 Unknown, 0 Unchecked, 45.4s Time] [2022-11-25 23:25:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12142 states. [2022-11-25 23:25:10,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12142 to 11021. [2022-11-25 23:25:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11021 states, 7500 states have (on average 1.424) internal successors, (10680), 7621 states have internal predecessors, (10680), 2696 states have call successors, (2696), 843 states have call predecessors, (2696), 824 states have return successors, (2789), 2632 states have call predecessors, (2789), 2688 states have call successors, (2789) [2022-11-25 23:25:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 16165 transitions. [2022-11-25 23:25:10,386 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 16165 transitions. Word has length 52 [2022-11-25 23:25:10,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:25:10,389 INFO L495 AbstractCegarLoop]: Abstraction has 11021 states and 16165 transitions. [2022-11-25 23:25:10,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:25:10,389 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 16165 transitions. [2022-11-25 23:25:10,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 23:25:10,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:25:10,393 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:25:10,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:25:10,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:25:10,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:25:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2055190676, now seen corresponding path program 1 times [2022-11-25 23:25:10,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:25:10,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733949485] [2022-11-25 23:25:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:25:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:25:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:25:10,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:25:10,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733949485] [2022-11-25 23:25:10,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733949485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:25:10,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:25:10,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:25:10,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904582667] [2022-11-25 23:25:10,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:25:10,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:25:10,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:25:10,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:25:10,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:25:10,691 INFO L87 Difference]: Start difference. First operand 11021 states and 16165 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 23:25:12,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:14,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:25:16,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:18,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:20,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:23,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:27,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:31,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:25:33,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:35,539 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 [] [2022-11-25 23:25:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:25:37,175 INFO L93 Difference]: Finished difference Result 23414 states and 34631 transitions. [2022-11-25 23:25:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:25:37,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2022-11-25 23:25:37,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:25:37,236 INFO L225 Difference]: With dead ends: 23414 [2022-11-25 23:25:37,236 INFO L226 Difference]: Without dead ends: 12433 [2022-11-25 23:25:37,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:25:37,281 INFO L413 NwaCegarLoop]: 1761 mSDtfsCounter, 419 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:25:37,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 3299 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 598 Invalid, 8 Unknown, 0 Unchecked, 26.0s Time] [2022-11-25 23:25:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12433 states. [2022-11-25 23:25:37,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12433 to 12296. [2022-11-25 23:25:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12296 states, 8427 states have (on average 1.4326569360389225) internal successors, (12073), 8563 states have internal predecessors, (12073), 3044 states have call successors, (3044), 843 states have call predecessors, (3044), 824 states have return successors, (3155), 2977 states have call predecessors, (3155), 3036 states have call successors, (3155) [2022-11-25 23:25:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12296 states to 12296 states and 18272 transitions. [2022-11-25 23:25:37,920 INFO L78 Accepts]: Start accepts. Automaton has 12296 states and 18272 transitions. Word has length 55 [2022-11-25 23:25:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:25:37,921 INFO L495 AbstractCegarLoop]: Abstraction has 12296 states and 18272 transitions. [2022-11-25 23:25:37,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 23:25:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 12296 states and 18272 transitions. [2022-11-25 23:25:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 23:25:37,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:25:37,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:25:37,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:25:37,925 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:25:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:25:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1320625469, now seen corresponding path program 1 times [2022-11-25 23:25:37,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:25:37,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320260125] [2022-11-25 23:25:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:25:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:25:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:25:38,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:25:38,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320260125] [2022-11-25 23:25:38,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320260125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:25:38,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:25:38,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:25:38,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788597300] [2022-11-25 23:25:38,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:25:38,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:25:38,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:25:38,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:25:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:25:38,315 INFO L87 Difference]: Start difference. First operand 12296 states and 18272 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-25 23:25:40,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:42,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:44,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:25:47,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:49,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:52,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:54,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:25:59,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:03,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:26:05,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:07,147 INFO L93 Difference]: Finished difference Result 12370 states and 18317 transitions. [2022-11-25 23:26:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:26:07,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2022-11-25 23:26:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:07,207 INFO L225 Difference]: With dead ends: 12370 [2022-11-25 23:26:07,207 INFO L226 Difference]: Without dead ends: 12367 [2022-11-25 23:26:07,216 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 [2022-11-25 23:26:07,217 INFO L413 NwaCegarLoop]: 1678 mSDtfsCounter, 110 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3248 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:07,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 3248 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 597 Invalid, 7 Unknown, 0 Unchecked, 28.5s Time] [2022-11-25 23:26:07,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12367 states. [2022-11-25 23:26:07,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12367 to 12367. [2022-11-25 23:26:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12367 states, 8467 states have (on average 1.4303767568205976) internal successors, (12111), 8602 states have internal predecessors, (12111), 3043 states have call successors, (3043), 875 states have call predecessors, (3043), 856 states have return successors, (3155), 2977 states have call predecessors, (3155), 3036 states have call successors, (3155) [2022-11-25 23:26:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12367 states to 12367 states and 18309 transitions. [2022-11-25 23:26:07,837 INFO L78 Accepts]: Start accepts. Automaton has 12367 states and 18309 transitions. Word has length 66 [2022-11-25 23:26:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:07,838 INFO L495 AbstractCegarLoop]: Abstraction has 12367 states and 18309 transitions. [2022-11-25 23:26:07,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-25 23:26:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 12367 states and 18309 transitions. [2022-11-25 23:26:07,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 23:26:07,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:07,842 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:26:07,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:26:07,842 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:26:07,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash 876553261, now seen corresponding path program 1 times [2022-11-25 23:26:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:07,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984950904] [2022-11-25 23:26:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:07,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 23:26:08,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:08,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984950904] [2022-11-25 23:26:08,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984950904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:08,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:08,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:26:08,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30851787] [2022-11-25 23:26:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:08,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:26:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:08,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:26:08,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:26:08,423 INFO L87 Difference]: Start difference. First operand 12367 states and 18309 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 23:26:12,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:14,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:16,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:26:20,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:22,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:24,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:26,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:29,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:32,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:38,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:40,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:46,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:26:50,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:52,863 INFO L93 Difference]: Finished difference Result 24696 states and 36567 transitions. [2022-11-25 23:26:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:26:52,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2022-11-25 23:26:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:52,909 INFO L225 Difference]: With dead ends: 24696 [2022-11-25 23:26:52,909 INFO L226 Difference]: Without dead ends: 12357 [2022-11-25 23:26:52,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:26:52,942 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 3 mSDsluCounter, 5015 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6690 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:52,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6690 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1210 Invalid, 9 Unknown, 0 Unchecked, 43.9s Time] [2022-11-25 23:26:52,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12357 states. [2022-11-25 23:26:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12357 to 12357. [2022-11-25 23:26:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12357 states, 8463 states have (on average 1.4302256882902045) internal successors, (12104), 8596 states have internal predecessors, (12104), 3040 states have call successors, (3040), 872 states have call predecessors, (3040), 853 states have return successors, (3152), 2974 states have call predecessors, (3152), 3033 states have call successors, (3152) [2022-11-25 23:26:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12357 states to 12357 states and 18296 transitions. [2022-11-25 23:26:53,541 INFO L78 Accepts]: Start accepts. Automaton has 12357 states and 18296 transitions. Word has length 68 [2022-11-25 23:26:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:53,541 INFO L495 AbstractCegarLoop]: Abstraction has 12357 states and 18296 transitions. [2022-11-25 23:26:53,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 23:26:53,542 INFO L276 IsEmpty]: Start isEmpty. Operand 12357 states and 18296 transitions. [2022-11-25 23:26:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 23:26:53,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:53,545 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:26:53,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:26:53,545 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:26:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1809521153, now seen corresponding path program 1 times [2022-11-25 23:26:53,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:53,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523745716] [2022-11-25 23:26:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 23:26:53,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:53,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523745716] [2022-11-25 23:26:53,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523745716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:53,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:53,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:26:53,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702015792] [2022-11-25 23:26:53,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:53,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:26:53,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:53,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:26:53,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:26:53,901 INFO L87 Difference]: Start difference. First operand 12357 states and 18296 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:26:58,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:27:01,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:02,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:04,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:07,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:10,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:18,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:27:21,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:23,711 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 [] [2022-11-25 23:27:24,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:27:24,640 INFO L93 Difference]: Finished difference Result 24688 states and 36556 transitions. [2022-11-25 23:27:24,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:27:24,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2022-11-25 23:27:24,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:27:24,689 INFO L225 Difference]: With dead ends: 24688 [2022-11-25 23:27:24,689 INFO L226 Difference]: Without dead ends: 12357 [2022-11-25 23:27:24,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:27:24,728 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 1 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:27:24,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4992 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 907 Invalid, 7 Unknown, 0 Unchecked, 30.3s Time] [2022-11-25 23:27:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12357 states. [2022-11-25 23:27:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12357 to 12357. [2022-11-25 23:27:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12357 states, 8463 states have (on average 1.4301075268817205) internal successors, (12103), 8596 states have internal predecessors, (12103), 3040 states have call successors, (3040), 872 states have call predecessors, (3040), 853 states have return successors, (3152), 2974 states have call predecessors, (3152), 3033 states have call successors, (3152) [2022-11-25 23:27:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12357 states to 12357 states and 18295 transitions. [2022-11-25 23:27:25,447 INFO L78 Accepts]: Start accepts. Automaton has 12357 states and 18295 transitions. Word has length 72 [2022-11-25 23:27:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:27:25,448 INFO L495 AbstractCegarLoop]: Abstraction has 12357 states and 18295 transitions. [2022-11-25 23:27:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:27:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 12357 states and 18295 transitions. [2022-11-25 23:27:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-25 23:27:25,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:27:25,452 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:27:25,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:27:25,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:27:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:27:25,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1008019650, now seen corresponding path program 1 times [2022-11-25 23:27:25,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:27:25,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110528415] [2022-11-25 23:27:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:27:25,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:27:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:27:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 23:27:25,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:27:25,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110528415] [2022-11-25 23:27:25,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110528415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:27:25,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:27:25,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:27:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134243541] [2022-11-25 23:27:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:27:25,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:27:25,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:27:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:27:25,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:27:25,761 INFO L87 Difference]: Start difference. First operand 12357 states and 18295 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:27:28,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:30,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:27:33,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:35,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:37,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:39,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:41,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:44,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:51,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:57,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:28:01,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:02,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:28:02,832 INFO L93 Difference]: Finished difference Result 24688 states and 36555 transitions. [2022-11-25 23:28:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:28:02,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2022-11-25 23:28:02,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:28:02,883 INFO L225 Difference]: With dead ends: 24688 [2022-11-25 23:28:02,883 INFO L226 Difference]: Without dead ends: 12351 [2022-11-25 23:28:02,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:28:02,915 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 3 mSDsluCounter, 4974 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6638 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:28:02,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6638 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1209 Invalid, 9 Unknown, 0 Unchecked, 36.6s Time] [2022-11-25 23:28:02,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12351 states. [2022-11-25 23:28:03,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12351 to 12351. [2022-11-25 23:28:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12351 states, 8461 states have (on average 1.4298546271126344) internal successors, (12098), 8592 states have internal predecessors, (12098), 3037 states have call successors, (3037), 871 states have call predecessors, (3037), 852 states have return successors, (3149), 2971 states have call predecessors, (3149), 3030 states have call successors, (3149) [2022-11-25 23:28:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12351 states to 12351 states and 18284 transitions. [2022-11-25 23:28:03,683 INFO L78 Accepts]: Start accepts. Automaton has 12351 states and 18284 transitions. Word has length 81 [2022-11-25 23:28:03,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:28:03,683 INFO L495 AbstractCegarLoop]: Abstraction has 12351 states and 18284 transitions. [2022-11-25 23:28:03,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:28:03,684 INFO L276 IsEmpty]: Start isEmpty. Operand 12351 states and 18284 transitions. [2022-11-25 23:28:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-25 23:28:03,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:28:03,695 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:28:03,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:28:03,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:28:03,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:28:03,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1239507640, now seen corresponding path program 1 times [2022-11-25 23:28:03,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:28:03,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358971002] [2022-11-25 23:28:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:28:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:28:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:28:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 23:28:04,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:28:04,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358971002] [2022-11-25 23:28:04,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358971002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:28:04,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334011735] [2022-11-25 23:28:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:28:04,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:28:04,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:28:04,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:28:04,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:28:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:28:06,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 2599 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:28:06,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:28:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:28:06,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:28:06,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334011735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:28:06,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:28:06,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-11-25 23:28:06,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594292650] [2022-11-25 23:28:06,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:28:06,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:28:06,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:28:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:28:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:28:06,879 INFO L87 Difference]: Start difference. First operand 12351 states and 18284 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:28:09,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:11,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:14,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:28:15,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:19,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:22,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:24,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:26,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:27,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:30,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:32,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:34,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:36,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:37,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:40,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:44,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:28:52,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:00,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:29:04,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:29:10,680 INFO L93 Difference]: Finished difference Result 15978 states and 23586 transitions. [2022-11-25 23:29:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:29:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2022-11-25 23:29:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:29:10,740 INFO L225 Difference]: With dead ends: 15978 [2022-11-25 23:29:10,741 INFO L226 Difference]: Without dead ends: 15952 [2022-11-25 23:29:10,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:29:10,747 INFO L413 NwaCegarLoop]: 2381 mSDtfsCounter, 1605 mSDsluCounter, 6577 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 106 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 8958 SdHoareTripleChecker+Invalid, 3962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:29:10,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 8958 Invalid, 3962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 3845 Invalid, 11 Unknown, 0 Unchecked, 63.1s Time] [2022-11-25 23:29:10,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15952 states. [2022-11-25 23:29:11,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15952 to 15723. [2022-11-25 23:29:11,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15723 states, 10718 states have (on average 1.4264788206754992) internal successors, (15289), 10923 states have internal predecessors, (15289), 3896 states have call successors, (3896), 1131 states have call predecessors, (3896), 1108 states have return successors, (4047), 3785 states have call predecessors, (4047), 3889 states have call successors, (4047) [2022-11-25 23:29:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15723 states to 15723 states and 23232 transitions. [2022-11-25 23:29:11,526 INFO L78 Accepts]: Start accepts. Automaton has 15723 states and 23232 transitions. Word has length 87 [2022-11-25 23:29:11,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:29:11,527 INFO L495 AbstractCegarLoop]: Abstraction has 15723 states and 23232 transitions. [2022-11-25 23:29:11,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:29:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 15723 states and 23232 transitions. [2022-11-25 23:29:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 23:29:11,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:11,533 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-25 23:29:11,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:29:11,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:11,747 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash 60511194, now seen corresponding path program 1 times [2022-11-25 23:29:11,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:11,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873033587] [2022-11-25 23:29:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:11,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:29:11,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565133829] [2022-11-25 23:29:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:11,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:11,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:29:11,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:29:11,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:29:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:13,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:29:13,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:29:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:29:13,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:29:13,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:13,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873033587] [2022-11-25 23:29:13,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:29:13,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565133829] [2022-11-25 23:29:13,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565133829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:13,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:29:13,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:29:13,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645639958] [2022-11-25 23:29:13,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:13,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:29:13,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:13,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:29:13,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:29:13,788 INFO L87 Difference]: Start difference. First operand 15723 states and 23232 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:29:15,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:17,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:19,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:20,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:23,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:29:25,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:27,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:29,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:31,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:33,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:34,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:36,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:39,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:43,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:48,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:50,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:52,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:29:56,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:29:58,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:30:00,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:30:02,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:30:06,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:11,034 INFO L93 Difference]: Finished difference Result 35423 states and 52974 transitions. [2022-11-25 23:30:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:30:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 91 [2022-11-25 23:30:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:11,239 INFO L225 Difference]: With dead ends: 35423 [2022-11-25 23:30:11,240 INFO L226 Difference]: Without dead ends: 19724 [2022-11-25 23:30:11,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:30:11,269 INFO L413 NwaCegarLoop]: 2309 mSDtfsCounter, 458 mSDsluCounter, 6367 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 1 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 8676 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:11,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 8676 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1496 Invalid, 12 Unknown, 0 Unchecked, 56.5s Time] [2022-11-25 23:30:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19724 states. [2022-11-25 23:30:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19724 to 15749. [2022-11-25 23:30:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15749 states, 10739 states have (on average 1.4256448458888165) internal successors, (15310), 10941 states have internal predecessors, (15310), 3896 states have call successors, (3896), 1131 states have call predecessors, (3896), 1113 states have return successors, (4063), 3793 states have call predecessors, (4063), 3889 states have call successors, (4063) [2022-11-25 23:30:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15749 states to 15749 states and 23269 transitions. [2022-11-25 23:30:11,905 INFO L78 Accepts]: Start accepts. Automaton has 15749 states and 23269 transitions. Word has length 91 [2022-11-25 23:30:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:11,905 INFO L495 AbstractCegarLoop]: Abstraction has 15749 states and 23269 transitions. [2022-11-25 23:30:11,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:30:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 15749 states and 23269 transitions. [2022-11-25 23:30:11,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 23:30:11,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:11,911 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:11,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:30:12,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 23:30:12,125 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash -412440653, now seen corresponding path program 1 times [2022-11-25 23:30:12,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:12,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790526801] [2022-11-25 23:30:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:12,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:12,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:30:12,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459480267] [2022-11-25 23:30:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:12,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:30:12,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:30:12,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:30:12,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:30:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:13,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 23:30:13,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:30:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:30:14,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:30:14,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:14,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790526801] [2022-11-25 23:30:14,131 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:30:14,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459480267] [2022-11-25 23:30:14,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459480267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:14,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:14,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:30:14,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106585371] [2022-11-25 23:30:14,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:14,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:30:14,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:14,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:30:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:30:14,133 INFO L87 Difference]: Start difference. First operand 15749 states and 23269 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:30:17,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:19,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:21,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:30:23,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:30:25,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:30:27,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:28,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:29,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:31,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:37,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:38,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:40,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:42,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:43,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:46,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:48,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:51,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:53,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:30:57,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:05,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:08,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:10,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:12,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:13,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:15,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:21,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:22,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:23,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:25,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:30,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:36,637 INFO L93 Difference]: Finished difference Result 16696 states and 24706 transitions. [2022-11-25 23:31:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:31:36,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2022-11-25 23:31:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:36,700 INFO L225 Difference]: With dead ends: 16696 [2022-11-25 23:31:36,701 INFO L226 Difference]: Without dead ends: 16693 [2022-11-25 23:31:36,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:31:36,708 INFO L413 NwaCegarLoop]: 2335 mSDtfsCounter, 1157 mSDsluCounter, 7039 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 73 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 9374 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:36,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 9374 Invalid, 3395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 3304 Invalid, 18 Unknown, 0 Unchecked, 81.6s Time] [2022-11-25 23:31:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16693 states. [2022-11-25 23:31:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16693 to 16560. [2022-11-25 23:31:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16560 states, 11302 states have (on average 1.4278888692266856) internal successors, (16138), 11524 states have internal predecessors, (16138), 4062 states have call successors, (4062), 1213 states have call predecessors, (4062), 1195 states have return successors, (4316), 3944 states have call predecessors, (4316), 4055 states have call successors, (4316) [2022-11-25 23:31:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16560 states to 16560 states and 24516 transitions. [2022-11-25 23:31:37,565 INFO L78 Accepts]: Start accepts. Automaton has 16560 states and 24516 transitions. Word has length 92 [2022-11-25 23:31:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:37,565 INFO L495 AbstractCegarLoop]: Abstraction has 16560 states and 24516 transitions. [2022-11-25 23:31:37,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:31:37,566 INFO L276 IsEmpty]: Start isEmpty. Operand 16560 states and 24516 transitions. [2022-11-25 23:31:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 23:31:37,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:37,586 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-25 23:31:37,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:31:37,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 23:31:37,803 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:31:37,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash 745683687, now seen corresponding path program 1 times [2022-11-25 23:31:37,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:31:37,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106693101] [2022-11-25 23:31:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:37,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:31:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 23:31:38,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:31:38,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106693101] [2022-11-25 23:31:38,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106693101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:38,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:38,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:31:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351528245] [2022-11-25 23:31:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:38,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:31:38,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:31:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:31:38,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:31:38,338 INFO L87 Difference]: Start difference. First operand 16560 states and 24516 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 23:31:40,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:41,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:43,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:31:45,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:47,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:49,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:52,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:56,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:31:59,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:01,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:03,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:32:08,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:10,242 INFO L93 Difference]: Finished difference Result 22975 states and 34003 transitions. [2022-11-25 23:32:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:32:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 127 [2022-11-25 23:32:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:10,309 INFO L225 Difference]: With dead ends: 22975 [2022-11-25 23:32:10,309 INFO L226 Difference]: Without dead ends: 16562 [2022-11-25 23:32:10,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:10,331 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3310 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:10,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3310 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 600 Invalid, 7 Unknown, 0 Unchecked, 31.2s Time] [2022-11-25 23:32:10,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16562 states. [2022-11-25 23:32:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16562 to 16562. [2022-11-25 23:32:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16562 states, 11304 states have (on average 1.4278131634819533) internal successors, (16140), 11526 states have internal predecessors, (16140), 4062 states have call successors, (4062), 1213 states have call predecessors, (4062), 1195 states have return successors, (4316), 3944 states have call predecessors, (4316), 4055 states have call successors, (4316) [2022-11-25 23:32:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16562 states to 16562 states and 24518 transitions. [2022-11-25 23:32:11,083 INFO L78 Accepts]: Start accepts. Automaton has 16562 states and 24518 transitions. Word has length 127 [2022-11-25 23:32:11,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:11,084 INFO L495 AbstractCegarLoop]: Abstraction has 16562 states and 24518 transitions. [2022-11-25 23:32:11,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 23:32:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 16562 states and 24518 transitions. [2022-11-25 23:32:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-25 23:32:11,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:11,097 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:11,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:32:11,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:11,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash -962120063, now seen corresponding path program 1 times [2022-11-25 23:32:11,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:11,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878031238] [2022-11-25 23:32:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:11,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:11,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:32:11,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301339776] [2022-11-25 23:32:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:11,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:11,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:11,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:11,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:32:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:13,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 3155 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:32:13,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-25 23:32:13,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:32:13,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878031238] [2022-11-25 23:32:13,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:32:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301339776] [2022-11-25 23:32:13,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301339776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:13,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:13,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:32:13,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337858899] [2022-11-25 23:32:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:13,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:32:13,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:32:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:13,586 INFO L87 Difference]: Start difference. First operand 16562 states and 24518 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-25 23:32:15,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:17,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:32:19,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:21,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:25,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:27,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:28,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:32,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:34,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:32:39,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:42,436 INFO L93 Difference]: Finished difference Result 19460 states and 28807 transitions. [2022-11-25 23:32:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:32:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 120 [2022-11-25 23:32:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:42,507 INFO L225 Difference]: With dead ends: 19460 [2022-11-25 23:32:42,508 INFO L226 Difference]: Without dead ends: 19455 [2022-11-25 23:32:42,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:42,518 INFO L413 NwaCegarLoop]: 1947 mSDtfsCounter, 1651 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 3498 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:42,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 3498 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 601 Invalid, 7 Unknown, 0 Unchecked, 28.1s Time] [2022-11-25 23:32:42,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19455 states. [2022-11-25 23:32:43,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19455 to 19341. [2022-11-25 23:32:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19341 states, 13224 states have (on average 1.4303539019963702) internal successors, (18915), 13501 states have internal predecessors, (18915), 4693 states have call successors, (4693), 1442 states have call predecessors, (4693), 1423 states have return successors, (5033), 4535 states have call predecessors, (5033), 4686 states have call successors, (5033) [2022-11-25 23:32:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19341 states to 19341 states and 28641 transitions. [2022-11-25 23:32:43,265 INFO L78 Accepts]: Start accepts. Automaton has 19341 states and 28641 transitions. Word has length 120 [2022-11-25 23:32:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:43,266 INFO L495 AbstractCegarLoop]: Abstraction has 19341 states and 28641 transitions. [2022-11-25 23:32:43,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-25 23:32:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 19341 states and 28641 transitions. [2022-11-25 23:32:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-25 23:32:43,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:43,280 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-25 23:32:43,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:32:43,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 23:32:43,495 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:43,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2088619923, now seen corresponding path program 1 times [2022-11-25 23:32:43,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:43,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523034702] [2022-11-25 23:32:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:43,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 23:32:43,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:43,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523034702] [2022-11-25 23:32:43,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523034702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:32:43,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835003680] [2022-11-25 23:32:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:43,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:43,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:43,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:44,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:32:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:46,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 3583 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:32:46,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 23:32:46,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:32:46,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835003680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:46,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:32:46,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 23:32:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46404671] [2022-11-25 23:32:46,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:32:46,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:32:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:46,384 INFO L87 Difference]: Start difference. First operand 19341 states and 28641 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-25 23:32:50,484 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 [] [2022-11-25 23:32:53,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:32:55,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:33:00,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:33:03,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:33:06,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:33:08,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:33:11,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:33:14,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:33:16,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 23:33:18,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:33:18,749 INFO L93 Difference]: Finished difference Result 36795 states and 54887 transitions. [2022-11-25 23:33:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:33:18,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 129 [2022-11-25 23:33:18,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:33:18,833 INFO L225 Difference]: With dead ends: 36795 [2022-11-25 23:33:18,834 INFO L226 Difference]: Without dead ends: 21420 [2022-11-25 23:33:18,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:33:18,875 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 399 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 5 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:33:18,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 3284 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 602 Invalid, 8 Unknown, 0 Unchecked, 31.3s Time] [2022-11-25 23:33:18,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21420 states. [2022-11-25 23:33:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21420 to 21274. [2022-11-25 23:33:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21274 states, 14645 states have (on average 1.4381017412086037) internal successors, (21061), 14950 states have internal predecessors, (21061), 5205 states have call successors, (5205), 1442 states have call predecessors, (5205), 1423 states have return successors, (5598), 5040 states have call predecessors, (5598), 5198 states have call successors, (5598) [2022-11-25 23:33:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21274 states to 21274 states and 31864 transitions. [2022-11-25 23:33:19,774 INFO L78 Accepts]: Start accepts. Automaton has 21274 states and 31864 transitions. Word has length 129 [2022-11-25 23:33:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:33:19,774 INFO L495 AbstractCegarLoop]: Abstraction has 21274 states and 31864 transitions. [2022-11-25 23:33:19,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-25 23:33:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 21274 states and 31864 transitions. [2022-11-25 23:33:19,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-25 23:33:19,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:33:19,787 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:33:19,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:33:20,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 23:33:20,003 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:33:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:33:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash -207253259, now seen corresponding path program 1 times [2022-11-25 23:33:20,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:33:20,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558919787] [2022-11-25 23:33:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:33:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:33:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:33:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 23:33:20,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:33:20,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558919787] [2022-11-25 23:33:20,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558919787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:33:20,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23197859] [2022-11-25 23:33:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:33:20,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:33:20,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:33:20,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:33:20,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77c96e3-4bb1-407c-9fda-8d856bb91787/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:33:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:33:22,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 3557 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:33:22,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:33:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 23:33:22,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:33:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 23:33:22,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23197859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:33:22,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1750614245] [2022-11-25 23:33:23,005 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2022-11-25 23:33:23,005 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:33:23,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:33:23,017 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:33:23,018 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:33:47,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:47,982 INFO L217 Elim1Store]: Index analysis took 472 ms [2022-11-25 23:34:04,660 WARN L233 SmtUtils]: Spent 16.62s on a formula simplification. DAG size of input: 1457 DAG size of output: 795 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 23:34:04,664 INFO L321 Elim1Store]: treesize reduction 2376, result has 33.4 percent of original size [2022-11-25 23:34:04,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 135 select indices, 135 select index equivalence classes, 8913 disjoint index pairs (out of 9045 index pairs), introduced 135 new quantified variables, introduced 264 case distinctions, treesize of input 682 treesize of output 1609 [2022-11-25 23:34:07,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:34:07,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 133 select indices, 133 select index equivalence classes, 8912 disjoint index pairs (out of 8778 index pairs), introduced 133 new quantified variables, introduced 0 case distinctions, treesize of input 672 treesize of output 1070